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Head-to-head evidence comparison — which supplement is right for you?
Alpha Lipoic Acid and Black Pepper Extract are closely matched across evidence, studies, and safety.
Verdict
Likely helps
13 of 14 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
7 of 8 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (2)
Outcomes where both Alpha Lipoic Acid and Black Pepper Extract have evidence — compare verdict strength side-by-side.
300-600mg
On empty stomach for best absorption, 30-60 minutes before meals
R-Alpha Lipoic Acid (R-ALA) — the natural form
5-20mg piperine daily
With the supplements you want to enhance, With meals containing fat
BioPerine (95% piperine standardized extract)
4-12 weeks
4-8 weeks
2-4 weeks
Immediate
Immediate
Effects of Oral Alpha-Lipoic Acid Treatment on Diabetic Polyneuropathy: A Meta-Analysis and Systematic Review
Nutrients (2023) · Meta analysis · n=1242
ALA treatment produced favorable results for TSS (a dose-related trend was observed), NDS, and the global satisfaction score.
Effects of selected dietary supplements on migraine prophylaxis: A systematic review and dose-response meta-analysis of randomized controlled trials
Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology (2025) · Meta analysis
In adults, compared with placebo, these supplements did not significantly affect other outcomes, and omega-3 supplementation did not yield a statistically significant reduction in any of these outcomes.
The Effect of Dietary Supplements on Male Infertility in Terms of Pregnancy, Live Birth, and Sperm Parameters: A Systematic Review and Meta-Analysis
Nutrients (2025) · Meta analysis · n=50
This study found no convincing evidence of an effect of any dietary supplements on male infertility.
Does curcumin improve liver enzymes levels in nonalcoholic fatty liver disease? A systematic review, meta-analysis, and meta-regression
Phytotherapy research : PTR (2024) · Meta analysis · n=835
Subgroup analysis revealed that adding piperine to curcumin did not benefit aminotransferase levels in NAFLD patients.
Curcumin supplementation effect on liver enzymes in patients with nonalcoholic fatty liver disease: a GRADE-assessed systematic review and dose-response meta-analysis of randomized controlled trials
Nutrition reviews (2025) · Meta analysis · n=905
Curcumin supplementation significantly reduced ALT (weighted mean difference [WMD], -4.10, 95%CI, -7.16 to -1.04) and AST (WMD, -3.27; 95%CI, -5.16 to -1.39), but not ALP (WMD, -0.49; 95%CI, -1.79 to 0.82).
A systematic review and meta-analysis of randomized controlled trials investigating the effect of the curcumin and piperine combination on lipid profile in patients with metabolic syndrome and related disorders
Phytotherapy research : PTR (2023) · Meta analysis
The combined results by the random-effects model demonstrated that curcumin plus piperine significantly decreased total cholesterol and LDL-C in patients suffering from metabolic syndrome.
Based on multiple meta-analyses showing dose-related trends for TSS improvement. 600mg/day most studied dose with significant benefit vs placebo in 73% of studies. Limited data on doses above 600mg.
Evidence from multiple studies showing piperine enhances absorption of co-administered compounds like curcumin. Most studies used 5-20mg range. Conservative effectiveness estimates due to variable study designs and co-administration contexts. May also enhance drug absorption leading to potential interactions.
AI-estimated from published studies. Interpret as directional guidance.
Both Alpha Lipoic Acid and Black Pepper Extract are closely matched — the best choice depends on your specific health goals.
For reduce inflammation, Alpha Lipoic Acid has a higher relevance score (80 vs 40).
No known interactions between Alpha Lipoic Acid and Black Pepper Extract have been documented in our database. However, always consult a healthcare provider before combining supplements.