viviscal

I damaged my hair and cut it all off to grow back naturally. I have been taking vitamins called hair, skin, and nails, and they worked ok but now I just bought viviscal. I want to know if I can take both viviscal and the hair skin and nail vitamins together to speed up the growth. Also, I just want to know if viviscal has any negative effects on the heart, or the rest of the body, or if a person can still take viviscal if they have a HYPERthyroid.