Minerals
Mineral supplements: timing, spacing, and forms
Bioavailability hinges on what you take alongside and what you space apart.
Key takeaways
- Space iron, calcium, magnesium, zinc at least 2 hours apart, they compete.
- Iron, morning, empty stomach, with vitamin C; avoid coffee and tea within 2 hours.
- Magnesium glycinate, evening, supports wind-down.
- Zinc, with dinner, balanced against copper if used long term above 40 mg/day.
What this category covers
Minerals supply the structural and catalytic building blocks of the body, from bone (calcium, magnesium, phosphorus) to oxygen transport (iron) to hundreds of enzymes (zinc, manganese, copper, selenium). They share gut transporters and compete for absorption, which makes their timing matter more than vitamins'. The default safe pattern: minerals spread across the day with food, with iron alone in the morning.
How timing differs across minerals
Iron: morning, empty stomach, with vitamin C, away from coffee, tea, and dairy. Calcium: with meals, 500 mg or less at a time, often evening. Magnesium glycinate: evening, ~30 minutes before bed. Zinc: with dinner. Trace minerals (selenium, chromium, iodine, copper): with meals, mid-day works.
Every mineral we cover
Boron
with food, with food
Calcium
with food, with food
Calcium Carbonate
with food, with food
Calcium Citrate
anytime
Calcium Malate
with food, with food
Chondroitin
with food, with food
Chromium
with food
Copper
with food
Dulse
with food
Electrolyte Mix
anytime
Ferrous Fumarate
morning, empty stomach
Ferrous Sulfate
morning, empty stomach
Glucosamine
with food, with food
Heme Iron Polypeptide
morning, empty stomach
Iodine
morning
Iron
morning, empty stomach
Iron Bisglycinate
morning, empty stomach
Kelp
with food
Lithium Orotate
evening
Magnesium Chloride
with food, with food
Magnesium Citrate
evening
Magnesium Glycinate
evening
Magnesium L-Threonate
evening
Magnesium Malate
morning
Magnesium Orotate
with food, with food
Magnesium Oxide
with food, with food
Magnesium Sulfate (Epsom)
evening
Magnesium Taurate
evening
Manganese
with food, with food
Methylsulfonylmethane (MSM)
with food, with food
Mineral Salt
anytime
Molybdenum
with food, with food
MSM
with food, with food
Nickel
anytime
Phosphorus
with food, with food
Potassium
with food
Sea Vegetables (Kelp etc.)
with food
Selenium
with food
Silica
with food, with food
Strontium
anytime
Trace Mineral Blend
with food, with food
Vanadium
with food, with food
Zinc
evening, with food
Zinc Bisglycinate
evening, with food
Zinc Citrate
evening, with food
Zinc Gluconate
evening, with food
Zinc Picolinate
evening, with food
Common pairings
FAQ
Why does coffee block iron?
Polyphenols in coffee and tea bind iron in the gut and reduce absorption by up to 60 percent. Separate by two hours.
Can I take calcium and magnesium together?
It is fine for tolerability, but they compete for absorption, splitting them across meals raises uptake of both.
Do I need a multimineral?
Most people get enough from food. Targeted supplementation (iron with low ferritin, magnesium for sleep, zinc with poor diets) is more useful than a generic multi.
Explore other categories
- VitaminsFat- and water-soluble micronutrients with very different timing rules.
- Essential fatty acidsFat-soluble. Take with a meal that contains some fat to avoid reflux and aid absorption.
- Amino acidsOften flexible, but a few (creatine, beta-alanine) reward consistency over timing.
- ProbioticsSurvival through stomach acid usually matters more than the exact clock time.
- Herbals & adaptogensEnergizing vs calming herbs need very different time-of-day placement.
- Sleep supportLate-evening cues, taken 30 to 60 minutes before lights-out.