The recommended dietary allowance (RDA) for vitamins B1, B2, and B3 varies slightly for men and women. However, both genders can benefit from a balanced B vitamin intake to maintain overall health. It is advisable to consult with a healthcare professional to determine the most appropriate B-complex supplement for your individual needs.The recommended dietary allowance (RDA) for vitamins B1, B2, and B3 varies slightly for men and women. However, both genders can benefit from a balanced B vitamin intake to maintain overall health. It is advisable to consult with a healthcare professional to determine the most appropriate B-complex supplement for your individual needs.