The “Right” Ratio of ALA/ALC

Q I am concerned about your product PropeL, and the relatively small amount of alpha-lipoic acid in it. Some other companies have combinations of alpha-lipoic acid and acetyl L-carnitine that use 150 mg of alpha-lipoic acid (ALA) per 500 mg of ALC. Your product supplies only 150 mg of alpha-lipoic acid per 1,000 mg of carnitine, instead of 150 mg for every 500 mg. It appears that you only have half of the alpha-lipoic acid you should have in the product.

CHUCK, San Antonio, TX

Dear Chuck,

A There is no absolutely “must have” ratio for alpha-lipoic acid to carnitine in a dietary supplement formula. Life Enhancement’s Propel is based partly on the work of Italian researchers who demonstrated libido and performance-enhancing benefits of a combination of two grams each of Acetyl-L-Carnitine, and Propionyl-L-Carnitine.1

Other studies have demonstrated the powerful antioxidant properties of ALA. It is both fat soluble and water soluble—literally a “go anywhere” antioxidant. When ALA was first introduced as a dietary supplement about ten-fifteen years ago, it was so costly that it was available in only relatively low doses (10–100 mg per serving). ­PropeL provides a generous 600 mg of ALA along with a whopping 4 grams of carnitine as Acetyl-L-Carnitine and Propionyl-L-Carnitine.

Ward Dean, M.D.


  1. Cavallini G, Caracciolo S, Vitali G, Modenini F, Biagiotti G. Carnitine versus androgen administration in the treatment of sexual dysfunction, depressed mood, and fatigue associated with male aging. Urology. 2004;63:641-6.

Featured Product

FREE Subscription

  • You're just getting started! We have published thousands of scientific health articles. Stay updated and maintain your health.

    It's free to your e-mail inbox and you can unsubscribe at any time.
    Loading Indicator