Is brainvitaminz.com a safe supplier for sarcosine?
I can’t see any traceability certificate for this product on the site.
For you, which site is the safest one for sarcosine quality?
It depends on what you mean by “safe”. I really don’t think their sarcosine product is likely to cause harm, but it is a synthetic product, which means it might be more difficult for it to be absorbed. I took brainvitaminz sarcosine for a period of a few months. At the end, when I decided it wasn’t having the desired effect, I took large doses of it, and it did me no harm.