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Head-to-head evidence comparison — which supplement is right for you?
Magnesium vs Passionflower: they're closely matched on evidence (8.5 vs 5.5/10); they're alternatives for improve deep sleep quality — the best pick depends on your goals. Take the 60-second quiz for a pick tailored to your goals.
Magnesium and Passionflower are closely matched across evidence, studies, and safety.
Verdict
Likely helps
12 of 16 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
4 of 4 studies with measurable effects showed benefit.
Top outcomes
200-350mg elemental magnesium daily
Evening for sleep/relaxation (glycinate), Morning for energy (malate), Anytime (citrate)
Depends on goal - see notes
250-500mg extract (or 2g dried herb)
For anxiety: as needed, For sleep: 30-60 minutes before bed
Standardized extract capsules
1-2 weeks
1-2 weeks
1 week
Immediate
30 min - 2 hours
30-60 minutes
30-60 minutes
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 Supplementation and Blood Pressure: A Systematic Review and Meta-Analysis
Hypertension (2025) · Meta analysis · n=2709
38 RCTs with 2709 participants analyzed
Magnesium and Potassium Supplementation for Systolic Blood Pressure Reduction in the General Normotensive Population: A Systematic Review and Subgroup Meta-Analysis for Optimal Dosage and Treatment Length
Nutrients (2024) · Meta analysis
Both supplements demonstrated greater reductions in SBP for the general population at lower dosages and longer treatment durations.
Herbal Remedies and Their Possible Effect on the GABAergic System and Sleep
Nutrients (2021) · Systematic review
Gamma-aminobutyric acid (GABA) is an inhibitory neurotransmitter that plays a major role in controlling different vigilance states.
Passiflora incarnata in Neuropsychiatric Disorders-A Systematic Review
Nutrients (2020) · Systematic review
Passiflora incarnata may be helpful in treating some symptoms in neuropsychiatric patients.
Herbal medicine for depression and anxiety: A systematic review with assessment of potential psycho-oncologic relevance
Phytotherapy research : PTR (2018) · Systematic review
Overall, 45% of studies reported positive findings with fewer adverse effects compared with conventional medications.
Based on meta-analysis of 38 RCTs with 2709 participants showing -7.68 mmHg reduction in hypertensive individuals. Effects are greatest in those with hypomagnesemia. Limited evidence in normotensive populations.
Based on meta-analysis of 198 subjects noting insufficient RCT data for definitive conclusions. Effectiveness limited by small sample sizes and study quality limitations. Drowsiness is primary dose-limiting side effect.
AI-estimated from published studies. Interpret as directional guidance.
Both Magnesium and Passionflower are closely matched — the best choice depends on your specific health goals.
For improve deep sleep quality, Magnesium has a higher relevance score (90 vs 58).
No known interactions between Magnesium and Passionflower have been documented in our database. However, always consult a healthcare provider before combining supplements.
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The right pick depends on your goals. Answer a few quick questions for a personalised recommendation — or dig into the full evidence on each.