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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
4 of 4 studies with measurable effects showed benefit.
Top outcomes
Shared outcomes (1)
Outcomes where both Arginine and Dong Quai 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
500-1500mg dried root extract daily
Divided doses with meals, Traditional use often stops during menstruation
Standardized extract
30-60 minutes
During exercise
2-4 weeks
Immediate
2-3 cycles
2-3 cycles
4-8 weeks
Ongoing
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).
Treatment of chronic urticaria with traditional Chinese medicine: A systematic review, meta-analysis, and medication regularity
Medicine (2025) · Meta analysis · n=1192
TCM has great advantages in the treatment of CU, can effectively improve the symptoms, the curative effect is stable and safe, but there are still some deficiencies in the standardization of curative effect evaluation.
A review of traditional Chinese medicine for treatment of glioblastoma
Bioscience trends (2020) · Systematic review
Although the current treatment is multimodal, including surgical resection, radiotherapy, and chemotherapy, it does not significantly improve survival time.
Z-ligustilide: A review of its pharmacokinetics and pharmacology
Phytotherapy research : PTR (2020) · Systematic review
New evidence suggests that Z-ligustilide has a wide range of pharmacological properties, including anticancer, antiinflammatory, anti-oxidant as well as neuroprotective activities and so on.
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.
Evidence limited to one small RCT (n=120) in cervical spondylosis patients using combination therapy. Effects on menstrual regulation are largely traditional use claims without direct study validation. Meta-analysis on amenorrhea treatment showed 91% effectiveness but used combination TCM formulas, not isolated dong quai.
AI-estimated from published studies. Interpret as directional guidance.
Arginine has a higher evidence score (9/10 vs 8.5/10) and wins in 2 of 3 categories.
For reduce inflammation, Arginine has a higher relevance score (70 vs 55).
No known interactions between Arginine and Dong Quai have been documented in our database. However, always consult a healthcare provider before combining supplements.