A complete safety, timing, and dosage guide for combining Selenium with Manganese — including how the two supplements interact, the best time of day to take each, and which populations should be careful.
Yes, you can safely take selenium and manganese together. No known interaction exists between these two trace minerals, and both are commonly included in the same multivitamin.
Selenium and manganese together are neutral: they do not interfere with each other’s absorption or activity, and no harmful interactions have been reported. Both trace minerals support separate enzyme systems, making Selenium + Manganese safe to take in the same daily supplement routine.
Selenium is incorporated into selenoproteins such as glutathione peroxidases, while manganese is a cofactor for enzymes like superoxide dismutase and arginase. They are absorbed in the small intestine via different transporters: selenium (especially as selenomethionine) uses amino acid transporters, and manganese uses divalent metal transporter 1 (DMT1) and other metal carriers. There is no evidence of competition between them for shared absorption sites, and they do not affect each other's metabolism or excretion. Additionally, both are water-soluble minerals, so they do not require dietary fat for absorption, further reducing any mechanistic overlap.
If you need both, the simplest approach is to take them together in a balanced trace mineral supplement, ideally with breakfast. Taking them with food improves tolerability and does not impair absorption, since they use different transport routes. There is no required spacing between selenium and manganese; if you take individual capsules, you can take both at the same meal. If you miss a dose, just take it with your next meal; do not double up. Pairing them with a protein-containing meal may support selenium absorption, as selenomethionine uses amino acid transporters.
For selenium, selenomethionine and selenium-enriched yeast are generally more bioavailable than selenite or selenate. For manganese, common forms include manganese gluconate, citrate, and sulfate, with similar absorption across these. No form-specific interaction with selenium has been reported, so choose the form that best fits your overall supplement routine.
Both selenium and manganese are frequently bundled in general multivitamin and multimineral formulas, as well as in trace mineral blends designed to cover micronutrient gaps. They are also commonly found in antioxidant support stacks alongside zinc and vitamin E.
Yes, you can take selenium and manganese at the same time without worry. They do not compete for absorption, and many multivitamins combine them in one pill. I would simply take them together with a meal for good tolerance.
Yes, it is safe to combine selenium and manganese every day as long as you stay within recommended dietary allowances. For most adults, that's 55 mcg of selenium and 1.8–2.3 mg of manganese daily. Avoid high-dose megadoses of either mineral without medical supervision.
You do not need to wait between selenium and manganese. There is no meaningful interaction between them, so you can take both at the same time. If you find that you have digestive issues, just take them together with food.
No, selenium and manganese do not compete for absorption. Selenium is absorbed through amino acid and other transport mechanisms, while manganese uses divalent metal transporters. Their pathways are separate, so taking both together will not reduce your uptake of either.
Most people can safely take selenium and manganese together, but those with liver disease should avoid manganese supplements unless approved by a doctor, because the liver clears manganese from the body. If you have chronic kidney disease or are pregnant, speak with your healthcare provider before supplementing either mineral.
I recommend taking selenium and manganese with food. While there is no strict requirement, food can help prevent nausea and may improve selenium absorption if it is in the selenomethionine form. Water is fine, but a balanced meal is a good habit for all supplements.
Reviewed by Caroline M. on April 15, 2026 for accuracy against the sources listed above. This page is educational and is not a substitute for professional medical advice.
The matrix has 86 supplements and 7310 pairwise interactions. Click any cell to see the full breakdown.