I've also heard that castor oil will help with thinning hair. Also vitamin D & iron. So I've read. But not sure about the iron. My grandmother is on a boat load of meds including iron. I don't see much of an improvement in her hair. I think the side affects of one of them is thinning hair. That may work against her. I hope you find something that works for you.
Originally Posted by curlicious13
DO NOT take more than the daily recommended amount of vitamin D or iron without medical supervision.

You need regular blood tests otherwise you can overdose. Overdosing these 2 supplements will cause serious health problems.