Here is a full list of B vitamins: thiamin (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate/folacin or folic acid (B9) and cobalamins (B12)
Catagen is a brief transitional phase of about two weeks
Benefits include improved energy, better sleep, elevated mood (it raises serotonin), increased focus, hormone regulation, hair growth + so much more
Less common issues include itching or a rash that may signal a mild allergic reaction, or brief dizziness
scalp may feel healthier Month 1-2 Vellus (fine) hairs may begin appearing in thinning areas Month 2-3 New growth becoming visible
Claimed outcome Energy changes Evidence level Preclinical or anecdotal What research currently shows NAD+ biology offers a possible mechanism, and informal reports vary