Can you take Magnesium and Zinc together?
Yes — they're even sold together (ZMA) — but high-dose zinc (over ~40 mg) can interfere with magnesium absorption, so space large doses.
🕑 How to time them
At typical doses (zinc ≤ 25 mg), together in the evening is fine. If you use high-dose zinc, keep it about 2 hours away from magnesium.
Yes — they're even sold together (ZMA) — but high-dose zinc (over ~40 mg) can interfere with magnesium absorption, so space large doses. Magnesium is typically taken for muscle & nerve function, sleep, 300+ reactions, while Zinc is used for immune function, wound healing, taste & smell — different jobs, so people often end up with both in the cabinet.
For context: a typical daily amount of Magnesium is 310–420 mg, and the upper limit for Magnesium is 350 mg*. A typical daily amount of Zinc is 8–11 mg, and the upper limit for Zinc is 40 mg.
The two supplements, side by side
What each one needs you to watch
- Magnesium:Cofactor that helps activate vitamin D.
- Magnesium:Space 2 h from high-dose zinc.
- Magnesium:Can reduce absorption of some antibiotics & bisphosphonates.
- Zinc:Chronic intake above 40 mg/day suppresses copper absorption.
- Zinc:Space 2 h from magnesium and iron at high doses.
- Zinc:Binds some antibiotics (quinolones, tetracyclines) — separate by 2–6 h.
Common questions
Can you take Magnesium and Zinc together?
Yes — they're even sold together (ZMA) — but high-dose zinc (over ~40 mg) can interfere with magnesium absorption, so space large doses.
How should you time Magnesium and Zinc?
At typical doses (zinc ≤ 25 mg), together in the evening is fine. If you use high-dose zinc, keep it about 2 hours away from magnesium.
Are Magnesium and Zinc already in a multivitamin?
Usually yes — most multivitamins contain both Magnesium and Zinc. If you take a multi on top of standalone pills, add up all three labels; the combined total is what counts against each nutrient's upper limit.
Related guides
- Can You Take Zinc and Magnesium Together? Absorption and TimingYes, but high-dose zinc competes with magnesium for absorption. Taking them about two hours apart fixes it. Here is the simple schedule.
- Magnesium vs Electrolytes: Do You Need Both?While magnesium is an electrolyte, separate electrolyte supplements are often redundant for daily use, unless you're experiencing heavy fluid loss.
- Can You Take Too Much Zinc? Side Effects and Daily LimitsYes, it is possible to take too much zinc. The upper limit is 40 mg daily for adults, and exceeding it can lead to side effects like nausea and copper deficiency.
- Which supplements boost your immune system before cold season?Some supplements like Vitamin C and Zinc offer modest immune support, potentially shortening cold duration. Echinacea and Elderberry have limited evidence for preventing or treating colds.
Check other combinations
Sources
Reference values: NIH Office of Dietary Supplements, adult general population. Educational information only — not medical advice. Medication interactions are individual: confirm your specific situation with a healthcare professional.