Bottom line If you take an ACE inhibitor like lisinopril, avoid potassium supplements and potassium-based salt substitutes unless your doctor approves them, because together they can push blood potassium to dangerous levels. Baseline test: check potassium and kidney function before starting therapy. Danger zone: potassium above 5.0 mmol/L needs close monitoring; above 5.5 mmol/L is […]
Potassium and ACE Inhibitors: Hyperkalemia Risk Read More »
Metformin blocks calcium-dependent B12 absorption in the gut. Does taking calcium help? The mechanism, the small studies, and what actually fixes low B12.
Can Calcium Reverse Metformin’s B12 Absorption Problem? Read More »
Vitamin C and zinc are generally safe with prednisone and may support immunity and skin healing – but immune-boosting on an immunosuppressant has real nuance.
Can You Take Vitamin C and Zinc With Prednisone? Read More »
PPIs like omeprazole reduce iron absorption by removing the stomach acid iron needs. If your iron isn’t budging, here’s the form, timing, and vitamin C fix.
Omeprazole and Iron: Why Your Supplement Isn’t Working (and the Fix) Read More »
Oral contraceptives can lower serum zinc, which may show up as acne, lower immunity or mood changes. The evidence and how much zinc is reasonable to replace.
Does Birth Control Deplete Zinc? Skin, Immunity and Mood Read More »
Bottom line An iron-free prenatal is a reasonable choice if iron makes you nauseous or constipated and you dose iron separately, but it is not a way to dodge iron entirely. Seeking Health Optimal Prenatal is our top iron-free pick on nutrient coverage; Needed wins on choline and testing; Mama Bird is the budget one-a-day
Best Prenatal Vitamins Without Iron (For Sensitive Stomachs) Read More »
Test before you take iron. The best at-home iron and ferritin finger-prick kits compared, and how to use the number.
Best At-Home Iron & Ferritin Test (2026): Test Before You Take Iron Read More »
Yes, but space them about 2 hours apart. Iron and magnesium compete for the same gut transporter, so taking them together can blunt how much iron you absorb.
Can I Take Iron and Magnesium Together? Safe, But Space Them 2 Hours Apart Read More »
Yes, zinc and magnesium are safe to take together at normal doses. Keep zinc at or under 40 mg/day to avoid mineral competition. Here is the simple rule.
Can I Take Zinc and Magnesium Together? Yes, With One Dose Caveat Read More »
Yes – plain magnesium supplements are fine with statins. The catch: magnesium-based antacids cut statin absorption, so take them 2 hours apart. Here is the ru
