CanPrev - Alpha Lipoic Acid 600 mg - 60 Vegetable Capsule(s) - NPN: 80029600 -- CanPrevs Alpha Lipoic Acid 600 provides a therapeutic 600 mg dose of a safe and stable form of ALA. The formula is supported with thiamine and biotin, as these nutrients in particular can either be deficient or compete with each other for absorption into cells. Studies show that those with thiamine deficiencies (such as those with digestive disorders or heavy alcohol use) can experience toxic side effects if high doses of ALA are taken without the support of thiamine. A biotin deficiency can occur due to high dosing with ALA as they both seem to compete with each other to get across the cell wall. ALA usually wins out and a deficiency can occur unless extra biotin is taken. Combining them into one formula ensures they work as equal partners instead of contenders.