Avocado Soy Unsaponifiables
Useful mainly for people with hip or knee osteoarthritis wanting a slow-acting symptom adjunct.
Quick decision guide
May help most
people with hip or knee osteoarthritis wanting a slow-acting symptom adjunct
Common dosing range
300 mg/day
When to expect effects
Weeks to months
Watch out for
avoid with soy or avocado allergy; effects build slowly
What is it
Avocado soy unsaponifiables (ASU) is an extract combining the unsaponifiable fractions of avocado oil and soybean oil, used as a supplement for joint and osteoarthritis support.
Is it worth it for you?
Use this as a quick fit check, not a diagnosis.
Worth considering if…
Probably skip if…
Evidence at a glance
| Goal | Effect | Best fit | Time |
|---|---|---|---|
hip and knee osteoarthritis Good Evidence | Modest pain and function improvement | people with hip or knee osteoarthritis, with the clearest signal in hip OA | Weeks to months |
hip and knee osteoarthritis
- Effect
- Modest pain and function improvement
- Best fit
- people with hip or knee osteoarthritis, with the clearest signal in hip OA
- Time
- Weeks to months
Evidence for 1 use
AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.
hip and knee osteoarthritis
Disease adjunctRandomized trials and meta-analyses show 300 mg/day ASU modestly improves pain and function in hip and knee osteoarthritis and can reduce reliance on other analgesics, with the benefit most consistent for hip OA. ASU appears to dampen IL-1-mediated cartilage breakdown and support matrix synthesis in lab models. The effect is modest and develops slowly over months.
Bottom line: ASU offers modest, slow-building symptom relief in hip and knee osteoarthritis, best supported for the hip.
Evidence is mixed
Symptom benefits are fairly consistent, but evidence that ASU slows structural joint-space narrowing is mixed, with stronger results for hip than knee.
How it works
How to take it
What to track
1 commercial form
Compare the main delivery options and what they’re best suited for.
ASU (1:2 avocado:soy ratio)
Most studied formulation; e.g., Piascledine.
Phytosterols absorbed with fat
Safety
Know the common side effects, key cautions, and who should avoid it.
Common side effects
Who should avoid it
- people with soy or avocado allergy
- pregnant or breastfeeding women (limited data on supplemental use)
Pregnancy & breastfeeding
Limited data for supplemental use in pregnancy and breastfeeding; consult a clinician.
Interactions
Food sources
| Food | Amount | %DV |
|---|---|---|
| Avocado | 1/2 medium | — |
Avocado
- Amount
- 1/2 medium
- %DV
- —
Choosing a product
What to look for on the label — and what to be skeptical of.
Look for…
Be skeptical of…
Frequently asked questions
How long until ASU works?⌄
Typically 2-3 months of daily use to see benefits.
Is it as effective as glucosamine?⌄
ASU has modest effects similar in magnitude to glucosamine and chondroitin for some patients. Effects vary.
References by claim
Track Avocado Soy Unsaponifiables with Pilora
Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.
Coming to App StoreDisclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.