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Asu5.5
ASU Research
Mostly mechanism / observational
24 peer-reviewed studies
What the evidence says
Mostly mechanism / observational
Most ASU studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from high-quality meta-analyses and randomised trials published 1997–2025 with a typical study size of 5,980 participants.
Based on 24 studies · 6 meta-analyses · 10 RCTs · 29,118 total participants
Confidence
High confidence
What the studies found
1helped· 23 more without graded effect data
By outcome
Joint pain & arthritisReduces knee osteoarthritis pain and improves function (not hip OA) · 1-3 months
6 studies in the last 5 years · Latest meta-analysis: 2019
199720112025
1Physical function (WOMAC)Meta-AnalysisCited 80×n=5,980 · very large study2014
In plain English: Evidence for the proprietary ASU product Piasclidine® in the treatment of osteoarthritis symptoms seems moderate to high for short term use, but studies over a longer term and against an apparently active control are less convincing.
Cameron M et al. · The Cochrane database of systematic reviews (2014)
Noticeable benefit
← WorseNo effectBetter →
Seventeen studies of confirmatory design (sample and effect sizes pre-specified) were mostly at moderate risk of bias.
Physical function was 33 points on the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) 0 to 100 point subscale (0 is no loss of function) with placebo, enriched Boswellia serrata improved function by 8 points (95% CI 2 to 14); NNTB 4.
Moderate-quality evidence (one study, 96 participants) indicated that adverse events were probably reduced with enriched Boswellia serrata (18/48 events versus 30/48 events with placebo; relative risk (RR) 0.60, 95% CI 0.39 to 0.92).
In plain English: More studies are needed to determine the precise pathways through which ASU exerts its effects and to establish the most effective dosages for its administration, either alone or in combination with other treatments.
Sabucedo-Suárez A, López-Peña M, Permuy M, Muñóz F. · Frontiers in veterinary science (2024)
Although results vary, pre-clinical research in different animal models has demonstrated positive effects, such as ameliorating histopathological changes and reduced inflammation.
Despite some discrepancies regarding structural changes in the joints, clinical trials typically demonstrate symptom relief and slow down the disease progression.
While ASU demonstrates significant promise in alleviating OA symptoms and reducing reliance on NSAIDs, further research is essential to fully understand its mechanisms of action.