A Biotin is safe to take — even at high doses. But taking too much can sometimes cause side effects like stomach ache, trouble sleeping, and excessive thirst. Talk to your healthcare provider if you think you've taken too much biotin.

A Several studies suggest alpha-lipoic acid helps lower blood sugar levels. Its ability to kill free radicals may help people with diabetic peripheral neuropathy, who have pain, burning, itching, tingling, and numbness in arms and legs from nerve damage.

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A While biotin is added to some shampoos that claim to reduce hair loss, there is no evidence that this works. Consuming foods rich in healthy vitamins and minerals will help with overall hair health.

A Avoid using alpha-lipoic acid together with other herbal/health supplements that can also lower your blood sugar. This includes devil's claw, fenugreek, garlic, guar gum, horse chestnut, Panax ginseng, psyllium, and Siberian ginseng.

A Strengthens and thickens: Biotin "is well known for its positive effects on hair including growing stronger thicker strands," says Friese.  Protects: Because biotin strengthens hair, it is less likely to break off at the ends, promoting and protecting length, explains Friese.

A Avoid using alpha-lipoic acid together with other herbal/health supplements that can also lower your blood sugar. This includes devil's claw, fenugreek, garlic, guar gum, horse chestnut, Panax ginseng, psyllium, and Siberian ginseng.

A While biotin is added to some shampoos that claim to reduce hair loss, there is no evidence that this works. Consuming foods rich in healthy vitamins and minerals will help with overall hair health.