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.
30-40g before bed
30-60 minutes before bed, Between meals for sustained protein
Micellar Casein powder
200-350mg elemental magnesium daily
Evening for sleep/relaxation (glycinate), Morning for energy (malate), Anytime (citrate)
Depends on goal - see notes
Overnight
2-4 weeks
4-8 hours
Always
1-2 weeks
1-2 weeks
1 week
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 (2019) · Systematic review · n=387
Pre-sleep protein enhances training adaptations
Magnesium supplementation in pregnancy
The Cochrane database of systematic reviews (2014) · Meta analysis · n=9090
Women receiving magnesium were significantly less likely to require hospitalisation during pregnancy (RR 0.65, 95% CI 0.48 to 0.86; three trials, 1158 women).Of the 10 trials included in the review, only two were judged to be of high quality overall.
Magnesium sulphate and other anticonvulsants for women with pre-eclampsia
The Cochrane database of systematic reviews (2010) · Meta analysis · n=11444
It reduced the risk of placental abruption (RR 0.64, 95% CI 0.50 to 0.83; NNTB 100, 95% CI 50 to 1000), and increased caesarean section (RR 1.05, 95% CI 1.01 to 1.10).
Magnesium Supplementation and Blood Pressure: A Systematic Review and Meta-Analysis
Nutrients (2024) · Meta analysis · n=2709
38 RCTs with 2709 participants analyzed
Casein Protein has a higher evidence score (9/10 vs 8.5/10) and wins in 2 of 3 categories.
For improve deep sleep quality, Magnesium has a higher relevance score (90 vs 40).
No known interactions between Casein Protein and Magnesium have been documented in our database. However, always consult a healthcare provider before combining supplements.