Interaction databaseSupplement × PrescriptionReviewed May 2026

Combined Oral Contraceptive and Magnesium Glycinate, a synergy.

Combined oral contraceptive use is associated with lower serum magnesium and altered mineral status in observational studies, contributing to fatigue, muscle cramps, and headaches in some women. Magnesium supplementation restores levels and may improve tolerability.

One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.

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At a glance

Substances
Combined Oral Contraceptive and Magnesium Glycinate
Pair type
Synergy
Evidence (highest tier)
Moderate
Source citations
2 sources
Stack Score effect
+2 to your Stack Score (per scored synergy row).
Scope
Supplement × Prescription
Last verified
May 30, 2026

Synergy · Moderate evidence

Synergy

What is happening. Combined oral contraceptive use is associated with lower serum magnesium and altered mineral status in observational studies, contributing to fatigue, muscle cramps, and headaches in some women. Magnesium supplementation restores levels and may improve tolerability.

Mechanism. Estrogen-induced shifts in mineral metabolism and aldosterone activity may increase magnesium excretion. Lower magnesium contributes to neuromuscular and vascular symptoms.

Recommendation. Use a modest magnesium supplement only as needed to meet intake goals while on combined oral contraception, especially if you have headaches, cramps, or mood symptoms. Best taken in the evening for sleep benefit.

Sources (2)
  1. Akinloye O, Adebayo TO, Oguntibeju OO, Oparinde DP, Ogunyemi EO. Effects of contraceptives on serum trace elements, calcium and phosphorus levels. West Indian Med J. 2011;60(3):308-15. PMID 22224344
  2. Basciani S, Porcaro G. Counteracting side effects of combined oral contraceptives through the administration of specific micronutrients. Eur Rev Med Pharmacol Sci. 2022;26(13):4846-4862. PMID 35856377

Stack Score

How this pair moves the number.

Effect on the composite score

If both Combined Oral Contraceptive and Magnesium Glycinate are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).

The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.

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