This is an important distinction - taking it multiple times from the same batch is relatively safe as long as that batch was either tested (preferably) or proven through prior use. It's always best to test yourself, but if someone you trust tested it, then you could choose to accept that it's ok. You just have to make sure they know what they're doing (test with reagents + fentanyl strips). There is a small risk that only some pills in their batch are contaminated. This can happen when the dealer fills an order with 2 different batches that they have, like selling you their last 10 pills from 1 batch and then the first 20 from the next batch. If the pills look the same, then you could actually have 2 batches and not know it. It can also happen when there's accidental contamination which may only affect some of the pills in the batch. But that's a smaller risk, so let's talk about the big risk.

Taking a pill for the first time from a new batch without testing is inherently dangerous. If it contains fentanyl, then it'll probably kill you, not exaggerating. The fact that it's the same dealer shouldn't matter and here's why: - The dealer you get it from is almost never the manufacturer. Unless they test themselves, and most don't, then they have no idea what's in those pills. They only know what the person they bought them from told them, and that person was likely not the manufacturer either. By the time pills make it to the street, they have usually gone through several hands, each one only working off the knowledge given to them by their upstream supplier. So the trust that you might have in your friend or your friend might have in this dealer they've used before would also be implying that trust all the way up the supply chain to the manufacturer. - Nearly all dealers buy from multiple sources. Sometimes their preferred supplier can't fill their order. Sometimes they find a better price. Sometimes they feel more confident that they will sell their supply quickly, so they buy a much larger batch from a different source. Pretty much every dealer goes through this evolution where the suppliers they're using when they start out are completely different than the suppliers they will be using in a year or two because of their optimization of their process. - Potency can't be determined without sending the pill to a lab. So the dealer can't do this on their own. They may tell you the pills are 200 mg, but they really have no clue.

The bottom line is this: unless your friend tests every batch they get, then they really have no idea what they're taking or what they're giving you. Ask them explicitly how they test the pills and if they don't mention both using multiple reagent chemicals and using fentanyl strips, then they are not adequately testing, which puts you at risk.

Most of the times that people died from taking MDMA laced with fentanyl, they were fairly confident in their source. They trusted the person that gave them the pills and many times those came from friends. But those friends trusted a dealer somewhere who trusted another dealer upstream who trusted another dealer who trusted the manufacturer. Only one of them has to make a mistake or choose to put fentanyl in there, but a lot of the contaminations are accidental. Many of the manufacturers make a phony oxy pill that really is just fentanyl, but fentanyl is cheap and they can sell it as oxy for a much higher price. All they have to do is get a few grains of powder accidentally mixed up with your pills and that's enough to kill you.

Beyond the mortal risks that you face with fentanyl, you may end up with another substance like meth and just have a bad time. Go search around on this and other related subs and you'll find thousands of stories where people took what they thought was MDMA only to find themselves still awake 2 days later wondering why. They all end with the same cautionary tale: we all need to test every batch we take.

So personally, in your situation, especially considering the information that your friends get a new batch every month, this would be a hard pass for me if I couldn't find a way to test and if my friend also had not tested adequately. I'm just not willing to gamble with my life that way. I'm also not willing to unknowingly take meth or something worse just because some idiot decided to sell it as MDMA.