fda statement bpc-157 not approved for human use The U.S. Food and Drug Administration is moving toward allowing compounding pharmacies ⁠to produce more than a dozen injectable peptides that were banned because of ⁠potentially significant safety risks, the New York FDA Committee Votes to Ease

Signs and symptoms include (but are not limited to): Extreme tiredness (fatigue) Tiredness / lack of energy Pale skin Numbness and / or tingling (paraesthesia) Feeling faint Noticeable heartbeat (palpitations) Feeling short of breath Loss of appetite Ringing in your ears (tinnitius) Unintended weight loss Changes in your vision A yellow tinge to the skin Depression Irritability Changes in the way you feel, behave, and think ('brain fog') A decline in mental function, such as changes to your memory, judgement and understanding (dementia) How long do B12 injections last

This includes vitamin B12

Both concepts are similar, but use a different approach

blood tests are prone to false positives and false negatives

26 People with ASD have been shown to be more likely to have certain SNPs affecting B12 bioavailability, therefore they may require higher intakes

For the comparative framing with peptides in the longevity-research category, see The Best Longevity Peptides for Research in Canada