Here’s a safer, evidence-based version. The two groups that especially need caution are people with impaired kidney function and people taking medications that interact with magnesium. (ODS)

⚠️ HEALTH EXPERTS WARN ABOUT MAGNESIUM SUPPLEMENTS — ESPECIALLY FOR THESE 2 HIGH-RISK GROUPS

Magnesium is an essential mineral, and getting enough from food is generally safe. But more isn’t always better when it comes to supplements.

🚨 1. PEOPLE WITH KIDNEY DISEASE

Healthy kidneys normally remove excess magnesium. When kidney function is impaired, magnesium can build up in the blood, increasing the risk of magnesium toxicity. (ODS)

People with kidney disease should not start high-dose magnesium supplements without discussing them with their healthcare professional.

💊 2. PEOPLE TAKING CERTAIN MEDICATIONS

Magnesium can interfere with the absorption or effects of some medicines.

For example, it can reduce absorption of certain antibiotics and osteoporosis medicines (bisphosphonates) when taken too close together. Some diuretics can also affect magnesium levels. (ODS)

Ask your doctor or pharmacist how far apart to take magnesium from your medications.

⚠️ HOW MUCH IS TOO MUCH?

For healthy adults, the upper limit for magnesium from supplements and medications is 350 mg per day, unless a healthcare professional recommends otherwise. This limit does not include magnesium naturally present in food. (ODS)

Too much supplemental magnesium can cause diarrhea, nausea, and abdominal cramps. Extremely high amounts can cause dangerously low blood pressure, breathing problems, irregular heartbeat, and other serious effects. (ODS)

🥜 FOOD IS DIFFERENT

Magnesium naturally found in foods such as nuts, seeds, legumes, whole grains, and leafy greens is generally not a concern for healthy people because the kidneys regulate excess magnesium. (ODS)

Bottom line: Magnesium can be beneficial, but a supplement isn’t automatically safe just because it’s a mineral. If you have kidney problems or take prescription medicines, check with your healthcare professional before adding a magnesium supplement.