Advance Physician Formulas

Advance Physician Formulas

a nutritional supplement company founded in 2003

Featured Formulas by Ray Sahelian, M.D.

Curcumin

Curcumin

Supplement Research Update by Ray Sahelian, M.D.

Experimenting with Dietary Supplements

One of my passions as a medical doctor and nutrition expert is to self-experiment with vitamins, herbs, teas, and all sorts of dietary supplements. I learn from these trials and it helps me understand the published research in a more complete way. 

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Determining Herbal Extract Potency

Question: Can you explain to me the term "herbal extract." How does one know the potency of an extract and whether it is good or not. Also what does that mean when it says on the label a 4:1 extract or a 10:1 extract?

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