When taken by mouth: It is likely safe for most people to take folic acid in doses of no more than 1 mg daily. Doses higher than 1 mg daily may be unsafe. These.
Most people don't have a circadian disorder and those who are taking the supplements solely to get to sleep, can take it at bed time or just 15 minutes prior.
You can take BCAAs anytime during the day, including during your work-out. With their lighter, fruity flavours, it's ideal to drink throughout the day.
A biotin deficiency may lead to hair loss, and supplements may aid hair growth. However, evidence has not shown that biotin supplements can boost hair.