I take 2 super b complex vitamins in the morning as told to do by my dr. as i am deficient. when is it best to take my healthy hair skin and nails vitamin? it's some b vitamins to, plus biotin which i need for my hair. tyvm?

There are no medically recognized hair, skin and nail vitamins. The usual multivitamin is more than sufficient exept to address specific deficiencies. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/.