Provider Recommended
Dr. Daryl Hales
DCChiropractic
10% off your first order, applied automatically at checkout
About Dr. Hales
I've practiced chiropractic and clinical nutrition for 49 years in Clearfield, Utah. I use specific and general chiropractic techniques. I use Nutrition Response Testing, Morphological Field Testing, and lab work to determine what each person specifically needs to be as healthy as possible, live a long, productive life, and reverse the effects of stress.
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Dr. Hales’s Picks
About OptimalAmino
The essential amino acid supplement Dr. Hales recommends.
NSF Certified for Sport
Every batch is tested for more than 290 banned substances and contaminants. See the listing
Published clinical trial
Studied in a randomized, placebo controlled trial at the University of Tampa, published in 2026. Read the study
Full label transparency
Every essential amino acid is printed on the label with its exact amount per serving. No proprietary blend, so you can check the formula against the research yourself. See the label