I take garlic, biotin, B-complex, calcium and a multi-vit with iron 2x daily. I have noticed increased growth thanks to the biotin and much less shedding thanks to the garlic pills. I take the b-complex because the biotin was breaking my skin out something fierce. Once I added the b-complex, my skin cleared up.
Below is a post from another board I had saved from a few years ago. It is not, I repeat NOT my personal vitamin regimen. The lady who wrote this had lost her hair due to cancer and this was written by her from her own research and experience in growing her hair back. HIH
MSM: This vitamin is very important for healthy hair, muscles, and joints. It helps to decrease hair fall out. It does this by assisting in making the growth stage of the hair longer. The longer you are able to retain the root, the longer you hair will grow. You may take up to 2000mg/day. Note: Ultra Nourishair contains 500mg of MSM. I take an additional 1000mg/day.
Silica: Helps in the shine of hair. It is also a very valuable antioxidant. It assists in a lot of other areas other than just helping your hair be soft and shiny. There is silica in the Ultra Nourishair; I take an additional 500mg/day.
Evening Primrose: There is so much to say about this essential fatty acid. It contains Omega-6 Fatty Acid (Gamma-Linolenic Acid). This is a good Omega-6 Fatty Acid. It has several benefits of which I will only name a few. Some of the benefits are reducing PMS, clearing up eczema, helping your skin glow, minimize fine wrinkles, reduce cholesterol, help with your metabolism, and cure hair and nail problems. It helps nourish straw-like hair. You really only need 480-960 mg of GLA to reap wonderful benefits. I personally take 500mg/day. You should see results with Evening Primrose as early as 2 weeks of daily consumption. Your scalp should feel less dry and the hair growing in should feel softer and more nourished.
Flaxseed Oil: Now flaxseed Oil is wonderful in the sense that it contains both Alpha-Linolenic Acid (Omega-3 Fatty Acid) and Gamma-Linolenic Acid (Omega-6 Fatty Acid). Omega-3 is very important in our bodies too. We need both to help maintain a healthy body. Omega-3 has been know the help ADD/ADHD (Attention Deficit Disorder). It is also essential for healthy hair, skin, and nails. It helps hair in the same way Omega-6 does. Why take both? Because the cells of the body need both to work properly. Our bodies do not make either of the Fatty Acids, we must supplement. Taking both will help the cells of the body work more efficiently and in return help growth of hair as well as health of hair and body. I take 500mg/day. I really don't think you need more than that, but experiment. You might find your body does need more.
Biotin: Now biotin is what really can boost your hair growth. Skin, nails, and hair rely on biotin to grow. So, if we feed our bodies more biotin, then our skin will look better, and our nails will be stronger, and our hair will grow faster and stronger. My hair vitamin contains 1200mcg of biotin. I take an additional 2400mcg/day. I have played with the dosage a little and have found that my hair definitely grows faster with the total biotin of 3600mcg/day. You might need to play with this too. You might need more or less than I do for results.
Protein: I can't scream enough about protein. We need it. I don't care if it plant or animal. Truthfully your body can absorb and utilize plant protein better than animal. This is why vegetarians are incredibly healthy. I drink a protein shake everyday with my vitamins. I drink it with milk (it tastes better and I get extra calcium and protein with the milk), vegans can make a protein drink with soymilk (get it with calcium added and you have the benefits of extra vegetable protein and calcium). Adding protein to your diet will help your body all the way around. It will function better and you will not be as hungry all the time. I suggest a protein drink of at least 22gr. of protein. I suggest at least one serving a day. If your diet is really bad, you can drink more. The extra protein will also help your hair grow. It is protein too, you know.