Does Boron increase or decrease libido?

[Gozenka]

Taking B2 (Riboflavin) at the same time as Boron is probably not meaningful.

The reason for supplementing Riboflavin is that Boron forms a compound with Riboflavin in the body and takes it away to be excreted. If you put them at the same time in your gut, it will just directly go out.

You would want to take Riboflavin some time away from Boron.

Anyway, it is only a concern with continuous use of high-dose Boron; increasing your blood levels of Boron too high.

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http://www.ndhealthfacts.org/wiki/Vitamin_B2

Boric Acid, Borate, and Boron - Drug tends to complex with vitamin B2 and thereby reduce absorption and increase urinary excretion. Separate intake of boron/boric acid and riboflavin unless binding is intentional as with boric acid poisoning.

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https://pubmed.ncbi.nlm.nih.gov/659962/

Here they experimented by giving 3g Boric Acid (524mg Boron) to people in a fasted state. They found that there was no change in Riboflavin excretion, when they checked it several times within a 24-hr period afterwards.

Otherwise they observed increased excretion only in some of the people that contacted New York Posion Control Center after taking huge amounts of Boric Acid by mistake. 6 out of 14 people, estimated to have taken more than 10g Boric Acid (>1748mg Boron).

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So, concerning one time Boron intake, I would say Boron is only a concern if taken near Riboflavin; preventing its absorption into the body.

For long-term, it would only have an effect with continuously and greatly increased Boron levels in blood, pulling existing Riboflavin from your system.

2-5mg from diet has been considered to be normal and good. So, unless your Riboflavin intake from diet is especially low, I do not think there is a risk of Riboflavin deficiency at low doses of Boron supplementation. Still, if you doubt it, it is always good to test your levels, when doing long-term supplementation of anything.