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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
5 of 5 studies with measurable effects showed benefit.
Top outcomes
3-6g daily
30-60 minutes before exercise, Divided doses throughout the day for cardiovascular benefits
L-Arginine powder or capsules
250-500mg daily for general support; up to 1500mg for therapeutic use
With meals containing fat, Before or with fatty meals
TUDCA capsules (pure tauroursodeoxycholic acid)
30-60 minutes
During exercise
2-4 weeks
Immediate
4-8 weeks
1-2 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).
The bile acid TUDCA and neurodegenerative disorders: An overview
Life sciences (2021) · Systematic review
The tauroursodeoxycholic acid (TUDCA), one of the acids found in bear bile, is a hydrophilic bile acid and naturally produced in the liver by conjugation of taurine to ursodeoxycholic acid (UDCA).
Nutraceutical, Dietary, and Lifestyle Options for Prevention and Treatment of Ventricular Hypertrophy and Heart Failure
International journal of molecular sciences (2021) · Systematic review
The potential advantages of whole-food plant-based diets, moderation in salt intake, avoidance of phosphate additives, and regular exercise training and sauna sessions are also discussed.
Tauroursodeoxycholic acid in the treatment of patients with amyotrophic lateral sclerosis: A randomized, double-blind, placebo-controlled phase 3 trial
JAMA Neurology (2020) · Rct · n=137
TUDCA-phenylbutyrate slowed functional decline by 2.32 points on ALSFRS-R score
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 one phase 3 RCT in ALS showing modest functional improvement and systematic reviews suggesting neuroprotective effects. Effect size is conservative given single disease population study and limited human data for other neurological conditions.
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, TUDCA has a higher relevance score (95 vs 70).
No known interactions between Arginine and TUDCA have been documented in our database. However, always consult a healthcare provider before combining supplements.