Biotin, folic acid, collagen, evening primrose, fish oil all taken together daily, is it ok? i am 26 female. no pregnancy plan.hypervitaminosis?

Totally fine: Hypervitaminosis is a term that refers to toxic levels of vitamin a, d or e, which you clearly don't have since you are not taking any of those! biotin and Folic Acid are essential nutrients that are non-toxic and prevent birth defects. Evening primrose ; fish oil provide essential fatty acids ; are very safe. Collagen is not essential but also quite safe. You have no need to worry.