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Avocado Soy Unsaponifiables (ASU) — Frequently Asked Questions

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Frequently Asked Questions

Is ASU the same as eating avocados and soybean oil?

No. ASU contains the unsaponifiable fraction of avocado and soybean oils — the portion that cannot be converted to soap, representing only about 1% of the oil. These concentrated plant sterols (particularly beta-sitosterol), fat-soluble vitamins, and other bioactive compounds are not present in meaningful amounts in dietary avocado or soy consumption.

Can I take ASU if I have a soy allergy?

People with soy allergy should exercise caution. While the unsaponifiable fraction undergoes extensive processing that removes most soy proteins (the allergenic component), trace amounts may remain. Consult your allergist before using ASU products if you have a confirmed soy allergy.

How does ASU compare to glucosamine for osteoarthritis?

Both have strong clinical evidence for OA. ASU has a unique advantage in disease-modifying evidence (slowing structural joint damage in a 3-year hip OA trial), while glucosamine sulfate has similar structural evidence for knee OA. They work through different mechanisms and can be combined. ASU at 300mg daily is simpler dosing than glucosamine at 1,500mg daily.

Full Avocado Soy Unsaponifiables (ASU) Guide

References

  1. (). Symptomatic efficacy of avocado/soybean unsaponifiables in the treatment of osteoarthritis of the knee and hip: a prospective, randomized, double-blind, placebo-controlled, multicenter clinical trial. Arthritis & Rheumatism. DOI
  2. (). Randomised, controlled trial of avocado-soybean unsaponifiable (Piascledine) effect on structure modification in hip osteoarthritis: the ERADIAS study. Annals of the Rheumatic Diseases. DOI
  3. (). Symptoms modifying effect of avocado/soybean unsaponifiables (ASU) in knee osteoarthritis. Scandinavian Journal of Rheumatology. DOI
  4. (). Symptomatic efficacy of avocado-soybean unsaponifiables (ASU) in osteoarthritis (OA) patients: a meta-analysis of randomized controlled trials. Osteoarthritis and Cartilage. DOI