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Supplements for Hair Loss -- woman looking at hairbrush

Answer:

Deficiencies in nutrients such as iron, zinc, biotin, riboflavin, vitamin D and protein can cause hair loss. Supplementing to offset these may reverse this hair loss. However, supplementing with these nutrients is unlikely to benefit people who already get adequate amounts.

Other supplement ingredients, including saw palmetto, beta-sitosterol, and pumpkin seed oil, as well as topical essential oils (including rosemary oil), cannabidiol (CBD), topical pumpkin seed oil, onion juice, castor oil, rice water or aloe vera gel have shown only modest benefits, at best, at promoting hair regrowth and the quality of the evidence is generally weak.

Similarly, there is little to no good evidence to suggest that "hair formula" supplements work, such as Viviscal (which includes marine protein), Hair La Vie Clinical Formula, and Nutrafol products, as well as hair loss shampoos such as Pura d'or Hair Thinning Therapy Shampoo or Nioxin shampoos.

Be aware that certain supplements — such as DHEA, selenium, St. John's wort, and vitamin A — as well as many drugs may cause hair loss.

There is preliminary evidence taking a low dose of the drug minoxidil orally (as opposed to its approved, topical use, as in Rogaine) or dutasteride orally (which is approved for treating benign prostatic hyperplasia) but not topically may help regrow thinning hair and may work better than low-dose finasteride (Propecia, which is approved for treating male-pattern baldness), although there are possible side effects with these drugs.

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