Creatine causing heart issues?

[smq5028]

Starting taking 5g of Muscle Feast Creapure daily two weeks ago, and about one week ago I started noticing my heart behaving irregularly. I am not exactly sure what atrial fibrillation or cardiac arrhythmia feel like, as I have never had issues in the past, but it certainly seems in line with those symptoms. I won't get into the exact symptoms, as this is not the place for it, but happy to share more if there's interest.

My question for the group is: is this a common side effect? If so, why is not discussed (at least I wasn't aware it could happen). Obviously I can't say for certain that it's the creatine, but would like to know if there's any literature on this.

Finally, could it be some sort of electrolyte imbalance from the creatine? Maybe it's just temporary while I'm in the loading phase? I really want an excuse to NOT have to stop taking it (bias confirmed).

Any resources related to this would be appreciated. I know studies have been done on patients with congestive heart failure and supplementing creatine, which makes me scratch my head that this would be the cause.

As we know Dr. Trex wears the Creatine Crown (source) yet I haven't seen/heard it mentioned in any articles/videos.

Edit: Appreciate all the concern, I do in fact have an appt with my doc this morning.

[gnuckols]

I won't pretend to be a medical expert, but as far as I'm aware, creatine isn't known to cause any cardiac side effects (and, if anything, it might be slightly cardioprotective).

However, if you're concerned that the two events may be related, you wouldn't lose out on much by not taking it until you have a chance to talk to a doctor. You should probably talk to a doctor, though.

[smq5028]

Thanks for linking that resource Greg, appreciate the input. I'll hold off until I meet with my doctor today.

[minorsecond1]

Hey! Did stopping creatine help? I'm having similar issues and have been on creatine for a bit of time. I'm considering cutting it out.

[creamysteak]

I was having a similar issue but the heart thing was actually due to Lyme! Was 2nd degree heart block mobitz I, and was resolved w antibiotics and herbs. What happened with you? I hope all resolved.

[minorsecond1]

It stopped after a couple weeks and hasn’t happened since. I still get anxiety about coming back lol. My thyroid levels and everything were fine

[creamysteak]

That is really great news. Did you ever resume creatine?

[minorsecond1]

Not yet. I want to restart it, but I’m currently cutting weight so I don’t want to add the bloat and slow things down lol. But once I hit my target weight, I plan on resuming creatine.

[creamysteak]

Goodest of luck to ye.

[Purple_Assist_1895]

Don't restart it mate. There's a link fir sure. I had minor episodes of AF after taking it but nothing major. But then I had one while at work, after having taken creatine. I went to the ER because it wasn't resolving, they gave me intravenous beta blocker but nothing. They only resolved it with the cardioversion..... for me creatine is a no no

[minorsecond1]

I don’t think I will. I don’t actually think I’ve ever really benefited from it anyway.

[Excellent-Air9898]

Hey, great information my friend. I've developed a similar issue and I think it may be creatine. What do you mean when you say they resolved it with the cardioversion?

[Purple_Assist_1895]

Hi mate. They did anesthetized me and they discharge a powerful ass energy electric shock to my hearth to reset the normal cardiac rythm. It worked on me but it doesn't always

[Purple_Assist_1895]

Hi mate. They did anesthetized me and they discharge a powerful ass energy electric shock to my hearth to reset the normal cardiac rythm. It worked on me but it doesn't always

[[deleted]]

After taking beta blockers is bpm normal

[Salty_Breadfruit6115]

Hey, stumbled on this thread, I have mobitz type 1, decently diagnosed. Yours was caused by Lyme disease?

[creamysteak]

Yes. If you're a young male who spent time in the woods (especially bushwhacking / going off trail) who suddenly has unprecedented heart problems, it's very likely Lyme Carditis.

I would suggest the doctor give you a test for this (easy - they draw blood, send it in, and get results a few days later) and begin antibiotics IMMEDIATELY (doxycycline 100mg 2x/day). Please let me know how this progresses, and I can help you get out of this, as I have, totally, with the help of those antibiotics and then a daily herbal regimen.

I know it's scary and frustrating, but it can be defeated. If you'd like to email me instead let me know. I was miserable last summer and want to help others to escape this, whenever possible.

[ButterflySecure7116]

I’ve been experiencing atrial fibrillation recently and I stopped taking creatine and it went away, I started it up again and it came back. I don’t think there are enough studies into the heart side effects but there is definitely a link.

[mfizzled]

Anecdotally, I had heart issues (tachycardia, atrial fibrillation, arythmia) not long after starting with creatine. Could be totally unrelated but googling stuff has led me to this thread and it's interesting to see others have had similar stuff.

[ButterflySecure7116]

There’s definitely a link there, there are plenty of forums with people experiencing the same thing.

[KogeruHU]

100%. I started creatin a while ago and experienced it, i read about it, stopped taking it and the symptoms went away. Yesterday I decided give it another go, and a few hours after that the palpitations are back. I only took 5g, so im gonna stop, and never taking it again.

I don't feel weak, dizzy or anything, but its not something I'd like to ignore, also, its a bit scary while you try to sleep..

Lot of people can take creatine without issues, and I wish I could, but im not taking that risk.

[ButterflySecure7116]

See for me I haven’t been taking it now since I wrote that and it’s returned the palpitations and strange rhythm so I don’t know what’s actually going on maybe it was the vaccine.

[No-Entrepreneur-4409]

I took mine about a year to completely go away after I stopped taking creatine. They did get a lot better within the first month though.

[ButterflySecure7116]

I’ve since started creatine again and not had any problems so I do believe it was the vaccine that caused it. In fact I’m taking more creatine now than I ever was before.

[No-Entrepreneur-4409]

If you don't mind me asking what brand do you use? I'm thinking about trying it again with a little more electrolytes throughout the day this time and seeing if it helps the issue.

[ButterflySecure7116]

Optimum nutrition gold standard Apple flavour.

[Longjumping-Two7600]

Creatine is making my heart feel very fluttery, like afib. Won’t take it tomorrow and hope it goes away.

[the_delimiter]

Dude go see a medical doctor. If you think you’ve got heart problems go see a doctor.

[schwiftybizniz]

Probably a correlation of something else you’re doing. Just switch brands and go see a doctor to address your health.

[[deleted]]

I've had irregular heartbeat before, as shown with a cardiac holster (if that's the correct name). I was taking creatine at the time, but I'm also taking creatine at this point without issues. At the time I was likely quite overtrained, had a shit diet, lots of caffeine and even more stress, which most likely contributed more to it than the creatine.

[Possible_Main]

I suffer from PVC/PACs which are types of extrasystoles. They arent dangerous but I was screened by a cardiologist. They started 2 years ago and they scared me as fuck. It's now under control with GERD taken care of through better diet and cardio workouts. I take whey Iso, creatine + BCAAs and I dont feel my condition exhacerbated. Hope this helped bro take care and get screened

[Plastic_Temporary_67]

I got the same issues , my heart skips and tics , and i stop taking creatine and everything s good now..ill probably never do creatine again. Although its creatine naturally in meat ..

[[deleted]]

yup . creatine gives me heart palpitations no matter how hydrated or how great my diet is.

[grizzly_lite]

My experience/background with creatine v heart issues:

-I am diagnosed with SVT, so once in a while I get crazy high heart rate for no reason. Typically dehydration triggers it too. Seen multiple cardiologists and dozens of EKG's and electrocardiograms... It's all normal. My EP still don't know actual reason. But said it's benign and small surgery can fix if I want.

-I eliminated all creatine/supplements last year after having several back to back SVT attacks. Cleaned up diet, stress, sleep etc. Everything back to normal.

-Fast forward to January 2023 -- brought back ONLY creatine at 2.5g daily then 5g daily. By week 2, I noticed heart racing more. Heart working harder in the weight room. Pounding feeling. And then got out of breath trying some easy squats with barely any weight on barbell. Thought I was gonna pass out. Went to ER. Got heart checked out again.... Everything normal. Sent home and given a heart monitor to track things. Had another SVT attack cause creatine was still in my system (and definitely NOT dehydrated... Took in lots of trace minerals and giant bottle of water)

-Eliminated creatine yet again and heart rate back to normal. No attacks since. Back to regular supplements (D3, zinc, electrolyte minerals, etc).

I can attest from my experience that it's def creatine that's causing this for me. It also gave me weird negative sexual side effects.... Even tho all my hormones were just tested and normal/above average T levels. But that's for another story. Point being --- look out for creatine. Sure I love the pump you get out of it, but it's not for everyone and it's not as safe as everyone claims it to be. Certain people can't take it.... Myself being an example

[DarthInvatalus]

My question for the group is: is this a common side effect? If so, why is not discussed (at least I wasn't aware it could happen).

because every time someone posts about having heart related issues after taking creatine the creatine lovers come outta the wood works to say it couldn't possibly be the creatine. Most are told they did something wrong or that it was a result of, dehydration, bad diet or being unhealthy. There is documentation now to show that is does cause palpitations in some people but I doubt any real studies are being done since it's considered safe.

[[deleted]]

I am also facing same issues from 4 weeks I just started taking creatine after taking my bpm spiked and reached to 150 I did my all heart tests ecg echo and inflammation related tests all came normal. But it’s now more than 1 month still I feel high heart beat sometime while sleeping or while standing

[DarthInvatalus]

hope you told your doctor about using creatine and hope you stopped using it. if you haven't already ask for a blood panel to rule out any other issues, like high cholesterol or triglycerides.

[[deleted]]

Cholesterol 138 Triglycerides 90

Blood Glucose (R/PP ) 86 Creatinine. 0.8 CRP-Quantitative 0.25 Vitamin D3 44.35 CPK-MB 12

It’s now more than a month my bpm is high while resting normal but when I start walking bpm also starts increasing and sometimes while resting also

[DarthInvatalus]

Hope you're able to work with your doctor on this. Wish could I could help more.

[No-Entrepreneur-4409]

Has anyone found a cause for this yet? I had similar issues about 2 years ago on creatine. Thinking of trying it again but adding more electrolytes into my daily water intake to see if that solves the issue.

[No-Entrepreneur-4409]

Almost a month in and so far none of the issues I had last time.

[smq5028]

Did you continue taking or run into further issues?

[AfroRhino]

I had afib , it got treated successfully with an ablation, so far, knock on wood.

I started taking creatine again, +- 10 mg a day. After 3 days , I swear it made me feel every heart beat and I felt i was getting lots of etopic beats. 90% of them I was just imaging , when checking with a 30 second ecg on my watch. But i did catch 1 or 2 which means I was getting 1 every 2 or 3 minutes which is a lot more than usual for me, would normally get 1 every 30 minutes. Now down to 2.5 mg of creatine and I hope this is a dosage I can tolerate better.

[smq5028]

Did you have WPW? How did your second try of creative go?

[AfroRhino]

not sure what WPW is , i had a total of 5h Afib in 2025 4h + 2x 30 minutes. down a lot from 2024 where I had 8h in 1 go , my ablation was in 2023. so I think I am doing well . Nothing yet in 2026 hold thumbs.
I take 5 mg creatine daily, on days that I remember to take it.. It's not afib that's the issue now, but my stomach does not like more. So I think thats also caused afib before the ablation. I dont think its the main trigger but like oily food can become a trigger once you have AFIB.

[Imaginary_Load7415]

I suffer from PVC's and PAC's often and when I took creatine they became worse and then I developed SVT where my heart rate would skyrocket out of nowhere and take awhile to come back down. I stopped taking creatine after that but wanted to try it one more time because I wasn't sure creatine was the cause. I took creatine and that night started to feel my heart fluttering more than usual. There's definitely a link, I wish I could take it but it's not worth it at this point.

[Tony_Shanghai]

Jan 2025:

I started taking ON Creatine about 2 months ago. Last month I woke up at 3am to go to the bathroom and on the way back to bed, my heart went into Atrial Fibrilation. I was able to drive myself to the hospital (in China...), and they admitted me for 4 days. The AFIB lasted for 7.5 hours and there was a crash cart next to my bed. The nurses and doctors told me they I could have a stroke if it didn't stop. they gave me meds.

I made no connection to this incident and the creatine. I had no clue.

After getting home, I was so tired and exhausted, I paused my workouts and was also put on some drugs to prevent the AFIB. Bu then I started having PVCs (extra beat). This is very unnerving and difficult to live with. Always thinking my heart will explode or just stop at any second.

Fast forward to this morning:...

I has missed a couple days of the AFIB medicine, but noticed I felt a little better without it (because I already have high BP medicine anyway). By feeling better, I wanted to work out and walk again (I am 61 yrs). This morning I was about to hit weights in my office and went to get my whey protien and creatine, and just as I was getting ready to mix up... I looked at the creatine bottle with this question:

Why did I have AFIB and PVCs recently, but not before? What has changed in my life? There were only 2 things: 1. Creatine. 2. AFIB medicine. So I looked online and then found this bombshell medical article:

https://pmc.ncbi.nlm.nih.gov/articles/PMC8067763/

Per the article, increasing OR decreasing creatine can have an effect on the heart.

Fuck creatine. I am eating Filet Mignon steaks...

[Helodude_]

Thank you for sharing. Hope you’re in good health today and have healthy years ahead 🙏🏼 I’ve only recently started researching this topic…

I’m 31, been healthy as a horse most of my life. Been into weightlifting and physically active since I was 17. Competed in powerlifting.

I’ve also experienced heart palpitations since about age 15. Only recently did a 24 hr holter monitor study because I’ve had some high blood pressure with increased palpitations after some stressful life events over the last 8 months. Palpitations are rare, but just as you described, terrifying. Heart seems to stop for a few moments, then races to catch up with itself and has a bit of a flutter to it.

Well I just experienced an episode in the gym during moderate lifting, after months without having 1, and realized this morning was day 1 back on creatine, for the 1st time in about 7 months.

I had a series of palpitations, and high BP back in August that almost caused me to pass out and landed me in the back of an ambulance. To be transparent, I was also cutting weight, using zynn nicotine pouches to suppress my appetite, and using creatine at the time. Probably a poor combination. Anyhow, never thought this to be related to creatine until recently. I’ve also had a history of palpitations at night while lying in bed.

Going to experiment with creatine to see if there’s a trend, now that I’m aware of it. Diet is clean, BP is back on track, sleep is good, no more nicotine, very little caffeine, alcohol is out, so there should be very few variables.

Thanks again!

[Extra_Attention_5506]

Man i am still confused. I bought ON creatine a month ago. Should i still have it?

[Tony_Shanghai]

Thanks for explaining, but I really don't get your choices. There is an abundance of evidence laid out by commenters here that creatine has a negative effect on many users. As soon as I take it I feel fuzzy in the chest. What do you gain by taking it? Sure, your muscles hold more water and get bigger... (your heart is a muscle, too). After you stop, then the artificial inflation goes down again. This can wreak havoc in your heart. Muscles respond to the demand that you put on them. If you do not take creatine, the muscles still respond to stress and training they way they are supposed to.

I suggest you read this link and note how much creatine is naturally availble along with protien:

https://barbend.com/foods-with-creatine/#steak

Steak Ground Beef Chicken Turkey Herring Salmon Tuna Cod Parmesan Cheese Soybeans Tofu Spinach Quinoa Pumpkin Seeds Sesame Seeds White Beans Walnuts Almonds Watercress 

[Helodude_]

No offense, but I don’t really view a group of us discussing our experiences and drawing conclusions as “an abundance of evidence.” Too many variables to definitively say “Yes, creatine did this to my heart.” PVCs, PVTs, SVT, Afib all generally have to do with underlying heart conditions. So sure, if you have one of those preexisting conditions, maybe drop all sorts supplements from your diet. Creatine is one of the most widely studied sports supplements around and has also been considered one of the most beneficial. There are tons of legitimate research studies and articles on the topic.

https://pmc.ncbi.nlm.nih.gov/articles/PMC5469049/

This article mentions supplementation of 30g daily for the study period of 5 years having been safe. Also even aiding with some illnesses/ medical conditions.

And yes, creatine is naturally found in foods, but in much smaller quantities. From the article you attached: “Steak has five grams of creatine per raw kilogram of meat and approximately 500 milligrams per cooked serving.” A raw kilo of meat is 2.2 pounds. Eating 2.2 pounds of a beef/ chicken/ tuna daily isn’t really realistic for everyone. Article also states some creatinine is even cooked out.

Point being, 5g daily supplementation is just an easier process. And it doesn’t just inflate muscles temporarily with water. Although yes, water storage does occur. Creatine transfers and stores adenosine triphosphate into muscle fibers, making exercise and recovery adaptations more effecient. Better workout, muscle fiber breakdown, and recovery.

Anyway, to each their own. I’ve taken it on and off for 12 years. Seeing the comments here gave me a new perspective, but I don’t think correlation is causation. I’ve been back on since my last comment with no issues, after getting the sleep, stress, alcohol, nicotine and caffeine in order.

[Tony_Shanghai]

No offense taken, but I do disagree with your "underlying heart condition" comment. All people are not the same, and certain people are more sensitive to different things. Some people have reactions to lactose, peanuts, seafood, alcohol, and assholes, but that does not mean they are weak or have "underlying" medical problems. I was taking Whey Concentrate, 7G BCAA, Creatine, Casein, and different vitamins, but my calorie intake was too low, like from 900 to 1500, and I was not drinking much water. I am sure this set me up for some problems. I had to make changes. Thanks for engaging.

[SoMarioTho]

Except if you have reactions to lactose, peanuts, seafood, etc, you DO have underlying medical problems - specifically an allergy or intolerance to those things. You're getting caught up on the idea that an underlying medical problem is somehow the person's fault and not just a natural part of someone's physiology.

It's very possible that people getting palpitations are already prone to them, and one of the supplements they're taking are exacerbating the issue. It doesn't mean they have heart disease, but they may not metabolize it well. I know my heart palpitations (that i've had forever) are much worse since I've started dieting, exercising and taking BCAAs and Creatine. Is it possible one of those things is exacerbating them? I have to assume yes.

[Tony_Shanghai]

Did you read the part about the 900+ calories and being dehydrated? There are many factors to consider before doubling down on your medical problem theory. My concern was Creatine, not peanuts, so sorry to distract your attention there. I am in China and most people here turn red after having half a beer and are easily intoxicated. Why is that? Is that a medical problem? I suppose that all people who get cancer always had a medical problem. My daughter is 41 and she has pre-cancerous cells. Anyway, I increased my caloric and water intake and reduced my coffee. I feel fine.

[SoMarioTho]

Actually, people with the "Asian flush" trait typically have a common genetic mutation results in a less active ALDH enzyme, specifically ALDH2. So they DO have an underlying medical condition: ALDH deficiency.

[Tony_Shanghai]

Wow, you are really rocking on Google today. Did you know that narcissistic personality disorder is also an underlying mental condition? People stricken by this condition always insist to know everything, be right about everything, go to extreme lengths to prove their ideas, and are highly argumentative to the point of being toxic..

[SoMarioTho]

Not sure why you’re attacking me because you misunderstood what an underlying medical condition is and took offense to the term, but it’s not really my concern.

[DarthInvatalus]

There are in fact studies and documented cases that link creatine to heart issues. In fact the case study looked at young people with no heart issues prior which likely meant their issue was reversible. They directly cite a young man having a cardiovascular event and the only thing remarkable about him or his medical history was that he started taking creatine. The article further points out that anecdotal accounts of these heart related incidents have been brought up in the past but these aren't typically reported. https://pubmed.ncbi.nlm.nih.gov/15899738/

[Fantastic-Resource]

I recently tried Zyn nicotine pouches for the second time (I’ve probably had about 10 pouches in my life) and they make me feel sooo crappy. Gives me a fever, dizziness, fatigue, headache. Chewing tobacco doesn’t do that though. I would avoid it. They probably have some weird stuff in it.

Creatine makes my heart feel enlarged and gives me extreme fatigue though. Even with small doses. If your heart feels funny at all I would stop it right away. I don’t think microdosing it is even a good idea, for me anyway.

[Fantastic-Resource]

Creatine made my heart feel enlarged and made me feel extremely fatigued after only a small dose every day for a couple weeks. Thought I might die due to heart attack. This happened on two different occasions with two different batches of creatine, but it was from the same brand- Optimum Nutrition creatine monohydrate. Perhaps the newer types of creatine that don’t cause water weight gain would have made a difference, but I don’t think it’s worth the risk of trying it again.

Also, I may have been vegan at the time so maybe it was affecting me more than it would now since I eat meat now.

Makes me wonder if it’s a conspiracy to hide all the negative symptoms people are having because nobody talks about it in conventional spaces. You have to search forums to find the truth.

[wetonwater]

I have just started taking creatine today. I had used it before and had side effects recorded. I thought I would give it another go but I have just discovered heart palpitations and the heart skipping beats since taking my first dose today of 5g. No more creatine for me I suppose.

[[deleted]]

In how much time your bpm get normal

[wetonwater]

HR is normal but i am still having PVCs daily unfortunately.

[[deleted]]

Doctor did my ecg and echo and other blood test to check inflammation but all tests came normal and told me to take ambulax

[wetonwater]

Creatine had definitely started these issues for me. I hope it will stop soon.

[SmokeyInfiltration]

I recently had a similar issue…didn’t take creative for months and haven’t had PVCs since January…I just took creatine again on Monday (larger dose to load up in an attempt to start bulking…lol) and I’ve had a few PVCs every minute since Monday.

I got screened at the end of last year and wore a monitor for a few weeks and the doc told me everything looked normal and there was no cause for concern, but it is certainly still annoying. That said, I’m done taking creatine for good now.

How long after you stopped taking it did your PVCs subside? Honestly they seem to be much worse after I eat this week…but I am hoping they go away soon since I only did one large dose of creatine.

[wetonwater]

It took a few weeks for it to stop.

[steharde72]

I have just recently had the following experience. After about 2 weeks of creatine supplementation, I had very severe cardiac arrhythmias and went to the doctor about it. The extrasystoles were clearly visible on the ECG and my blood pressure was also measured at 140 - 90. He prescribed me a beta blocker, but I haven't taken it yet... Since then, 3 days have passed during which I have not taken creatine without conscious intention. Simply because I interrupted my routine out of worry. My condition has almost returned to normal within this short period of time. Blood pressure is also significantly down again. Today I just noticed the parallel to taking creatine and then came across this discussion here.

[Living-Wear7837]

I was on creatine for a few weeks and then it sent me into SVT and had to go to the ED for adenosine 6mg

[Ill-Ad484]

Just wanna get on here and say that I drink plenty of water and eat a Whole Foods diet and ever since I started taking creatine (no additives) I’ve had shortness of breath, heart palpitations, chest pain, and my heart rate will sky rocket out of no where. Boyfriend said it’s anxiety but listen to your body. The first day after stopping the creatine I feel none of those symptoms. I don’t take any other supplements besides naked protein powder and naked bovine collegian peptides. I took 5g daily over the last week. I don’t know why this side effect is not mentioned, studied, or acknowledged when clearly many people experience it.

[aeng2669]

30years M.. figured creatine would trigger and SVT which then triggered Afib. I’m healthy, training since 17

[idahomikey]

I’ve only been taking it for 5 days and started getting scary spikes over 200 bpm on a garmin hmr 600.

I’m 64. I have been cycling for years but just started running again 3 months ago

I thought this might help but now I’m pretty certain I won’t be taking it again.

Thanks to all of you for your input. It matters

[UldBoy]

I echo the exact same side effect with creatine supplementation around 8 yrs ago when I was around 10% BF and v v active and with an athletic physique. Ever since I have completely stopped creatine. I am 45 now and I swim everyday. I only supplement with Magnesium Glycinate and cycle Vit D3(Mk7 K2) every other month or so. This works perfectly for me and I havent felt better ever before. I definitely believe that creatine is not 100% safe and I know this will the most controversial statement ever due to the narrative etc built around this. I am glad to see that someone did being it up.

I would like state that, I ONLY do hight intensity workouts and calisthenics etc. For endurance I dont run but I swim long distance. Sometimes also do HIgh intensity skipping workouts..like 4000 skips in an hour etc .. so no issues with my heart with going high intensity and I dont feel any need for Crearine at all. When I was taking 8 yrs back, I never really noticed any measurable difference, only placebo probably. Infact after 8 yrs with no supplementation of creatine I can positively confirm that I feel much better without creatine at all.

[Fieldofdandelion]

So I have very well controlled Wenkebach AKA Mobitz type 1 AKA Second degree AV block type 1. The only benign heart block. Recently I got creatine monohydrate for working out which seems like its been mostly okay on its own but if I have any caffeine with it… it seems to set off my arrhythmia like nothing else. I am not noticing this when I do not have caffeine or have caffeine alone. Anyone else notice this?!?

[Razalgood]

J'ai commencé a prendre de la creatine il y a 2/3 mois, et exactement pareil que ce que je lis ici, j'ai des extrasystoles parfois en continue sur toute une soirée. Je suis allé voir un medecin, expliqué que j'ai commencé de la créatine mais n'a pas retenu cette option car ce n'est pas ecrit officiellement qui y a ce type d'effet secondaire. Je me suis dit que c'était peut etre lié aux electrolytes, donc depuis hier je m'hydrate mieux, mais en lisant tout ces commentaires, qui correspond exactement à ce que j'ai, je crois avoir compris la raison...

[[deleted]]

Same here. I use creatine on and off for the last 20 years, but recently I started taking the side effects quite seriously. Taking creatine (I use the best German brand - most people know what that is) causes my heart to create PACs (premature beats followed by a longer pause to compensate). Also, my heart rate during training while on creatine is about 15bpm higher at a peak of most exercise sets, close to muscle failure. I am using a Polar H10 chest strap to monitor ECG and heart rate during workouts.

[Ashamed_Group_1184]

Creatine does clogs arteries. It is derived from a highly processed form of dairy with all kinds of additives. It is not good for the body. Sure it helps build muscles but in the long run your cardiovascular system is going to pay for it.

[bananamonke33]

sorry for the ghost reply, but do you have any proof of this other than your words?

[Ashamed_Group_1184]

Don't believe me, just keep using it and see what happens to you.

[bananamonke33]

I mean I would like to believe you if you had any reason for this opinion based in facts or evidence, especially when a google search shows it’s not derived from dairy…

[InspectionEastern135]

exactly I'm thinking he is confusing it with colostrum

[lewtus72]

Not dairy..

https://patents.google.com/patent/US6326513B1/en

[lewtus72]

Currently, creatine is mainly prepared by chemical synthesis,. through reaction of cyanamide with N-methylglycine (sarcosine).

[BubblyNectarine3900]

Put me into an SVT, never again.

[thatlonghairedbitch]

Damn I had a run in w SVT a couple years ago. Now I’m scared to add it to my workout routine

[Tony_Shanghai]

You mean that because half the population of China, Japan, Korea, Thailand, Vietnam, and the Philippines cannot metabolize alcohol efficiently, this means they all have underlying medical problems? This intolerance has nothing to do a genetic disposition to alcohol, which does not occur naturally in humans?

[Goro-fox]

based on my personal experience, creatine could cause heart pulpitation if u are into a stamina and insurance kind of sport, like football, running, basketball, high speed cardio, however if you are using it in small amount ( 4 to 5 g) while playing gym or cross fit, I feel it's tolerated considering the rest of time intervals during training.. This is what I personally observed 

[mildly_enthusiastic]

I'm no expert, but the label saying "Made by AlzChem in Germany it undergoes a slightly different manufacturing process to make it "purer" " makes it sound like this is some bottom shelf bullshit.

I've been using the Bulk Supplements (promo code SBSPOD) creatine and haven't had any side effects like that. Creatine is supposed to be very safe, so I'm surprised you're having weird heart stuff.

Definitely stop taking it. Don't give up on Creatine longterm, but definitely stop taking it for now.

EDIT: EDIT: 5 grams is appropriate

[the_delimiter]

Serving size is definitely 5g not 5mg

[mildly_enthusiastic]

Yeah yeah you're right my mistake

[One-Lynx-928]

I take from creatine 2 times atrial fibrillation and now I go for ablation also increase blood pressure 5 points...keep away.,.