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Head-to-head evidence comparison — which supplement is right for you?
Arginine wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Probably helps
11 of 19 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
3 of 3 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Arginine and Pygeum have evidence — compare verdict strength side-by-side.
3-6g daily
30-60 minutes before exercise, Divided doses throughout the day for cardiovascular benefits
L-Arginine powder or capsules
100-200mg standardized extract daily
Once or twice daily, With or without food
Standardized extract (13-14% sterols)
30-60 minutes
During exercise
2-4 weeks
Immediate
6-8 weeks
6-8 weeks
8-12 weeks
Nutritional interventions for preventing and treating pressure ulcers
The Cochrane database of systematic reviews (2024) · Meta analysis · n=7920
Compared to standard diet, protein supplements may result in little to no difference in pressure ulcer incidence (protein 21 per 1000, standard diet 28 per 1000; RR 0.75, 95% CI 0.49 to 1.14; 4 studies, 4264 participants; low-certainty evidence).
Comparative Effects of Different Nutritional Supplements on Inflammation, Nutritional Status, and Clinical Outcomes in Colorectal Cancer Patients: A Systematic Review and Network Meta-Analysis
Nutrients (2023) · Meta analysis · n=2841
Glutamine was superior in decreasing tumor necrosis factor-α (MD -25.2; 95% CrI [-32.62, -17.95]), whereas combined omega-3 and arginine supplementation was more effective in decreasing interleukin-6 (MD -61.41; 95% CrI [-97.85, -24.85]).
Nutritional interventions for treating foot ulcers in people with diabetes
The Cochrane database of systematic reviews (2020) · Meta analysis · n=629
It is also uncertain whether arginine, glutamine and β-hydroxy-β-methylbutyrate supplement increases the proportion of ulcers healed at 16 weeks compared with placebo (RR 1.09, 95% CI 0.85 to 1.40).
What do we know about phytotherapy of benign prostatic hyperplasia?
Life sciences (2015) · Systematic review
On the basis of preclinical studies several mechanisms of action have been postulated, including 5alpha-reductase inhibition, alpha-adrenergic antagonism, dihydrotestosterone and estrogen receptor inhibition.
Phytotherapy of benign prostatic hyperplasia. A minireview
Phytotherapy research : PTR (2014) · Systematic review
Histological BPH, which typically develops after the age of 40 years, ranges in prevalence from >50% at 60 years to as high as 90% by 85 years of age.
Benign prostatic hyperplasia and male lower urinary tract symptoms (LUTS)
BMJ clinical evidence (2011) · Systematic review
Systematic review examining Pygeum efficacy
Based on meta-analysis showing mean reductions of 5.39 mmHg systolic and 2.66 mmHg diastolic. Effects are modest and may not be clinically significant for all individuals. GI side effects increase notably above 6g.
Based on Cochrane review (n=1562) and network meta-analysis showing modest benefits. Evidence quality noted as low-to-moderate due to dated methodology in available RCTs. Most studies used standardized bark extract.
AI-estimated from published studies. Interpret as directional guidance.
Arginine has a higher evidence score (9/10 vs 7/10) and wins in 2 of 3 categories.
For reduce inflammation, Arginine has a higher relevance score (70 vs 50).
No known interactions between Arginine and Pygeum have been documented in our database. However, always consult a healthcare provider before combining supplements.