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Head-to-head evidence comparison — which supplement is right for you?
Casein Protein wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
3 of 3 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
3 of 4 studies with measurable effects showed benefit.
Top outcomes
30-40g before bed
30-60 minutes before bed, Between meals for sustained protein
Micellar Casein powder
2-6g daily
Before exercise for fatigue reduction, Before bed for sleep support
L-Ornithine HCl
Overnight
2-4 weeks
4-8 hours
Always
During prolonged exercise
Hours post-exercise
1-2 weeks
Immediate
Effects of supplementation with milk protein on glycemic parameters: a GRADE-assessed systematic review and dose-response meta-analysis
Nutrition journal (2023) · Meta analysis · n=1851
The findings of this study suggest that supplementation with MP may improve glycemic control in adults by reducing the values of fasting insulin, FBG, and HOMA-IR.
Pre-Sleep Casein Supplementation, Metabolism, and Appetite: A Systematic Review
Nutrients (2021) · Systematic review · n=11
However, it remains unclear what the effect of this nutritional strategy is on non-muscular parameters such as metabolism and appetite in both healthy and unhealthy populations.
Pre-sleep protein ingestion to improve the skeletal muscle adaptive response to exercise training
Nutrients (2016) · Systematic review · n=387
Pre-sleep protein enhances training adaptations
Comparative Efficacy of Treatment Options for Minimal Hepatic Encephalopathy: A Systematic Review and Network Meta-Analysis
Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association (2020) · Meta analysis · n=1563
In a meta-analysis of data from 25 trials, we found rifaximin and lactulose to be most effective for reversal of minimal HE in patients with cirrhosis.
Safety assessment of L-ornithine oral intake in healthy subjects: a systematic review
Amino acids (2025) · Systematic review
The main observed adverse events were gastrointestinal disorders.
Efficacy of L-ornithine L-aspartate for minimal hepatic encephalopathy in patients with cirrhosis: A meta-analysis of randomized controlled trials
Arab journal of gastroenterology : the official publication of the Pan-Arab Association of Gastroenterology (2024) · Meta analysis · n=292
LOLA has significant beneficial effects on reversal of MHE and prevention of OHE in patients with cirrhosis compared with placebo or no intervention.
Based on systematic review (n=387) showing pre-sleep casein enhances training adaptations and increases muscle fiber size. Optimal dose identified as 30-40g. Limited to pre-sleep timing and requires concurrent exercise training.
Evidence specific to L-ornithine L-aspartate form in cirrhosis patients. Meta-analysis of 292 patients showed significant benefit vs placebo. GI adverse events noted as main side effect. Limited applicability to healthy populations.
AI-estimated from published studies. Interpret as directional guidance.
Casein Protein has a higher evidence score (9/10 vs 8.5/10) and wins in 2 of 3 categories.
For speed up recovery, Casein Protein has a higher relevance score (85 vs 60).
No known interactions between Casein Protein and Ornithine have been documented in our database. However, always consult a healthcare provider before combining supplements.