Final answer:
The general daily requirement of niacin or niacinamide is 15-20 mg/day, which is lower than the dosages mentioned in the question. Niacinamide, a form of niacin, can be synthesized from the amino acid tryptophan in the body. For personalized supplement advice, consultation with a healthcare provider is necessary.
Step-by-step explanation:
The question revolves around the recommendation of niacinamide intake according to Ray Peat. When discussing daily vitamin requirements, specifically niacin or vitamin B3, the general daily requirement is about 15-20 mg/day.
Niacinamide, also known as nicotinamide, is a form of niacin. Niacin can be formed in the body from the amino acid tryptophan, with 60 mg of tryptophan producing approximately 1 mg of niacin.
However, the recommendation by Ray Peat is not the standard daily requirement but suggests a therapeutic dose that might be higher. Without more specific context from Ray Peat's guidelines, it's important to consider that the regular daily recommendation for an average adult is much lower than the options provided in the question (a) 500 mg, (b) 1000 mg, (c) 2000 mg, and (d) 3000 mg. Thus, one should consult healthcare providers for personalized advice before taking any vitamin supplements at the dosages mentioned in the question.