When to take Selenium
Pinned to with food, the best window for Selenium.
Why timing matters
Total daily intake matters more than time of day, and excess selenium is harmful.
Morning vs. night
Either, but breakfast pairs well with iodine for thyroid support.
Why with food
Food improves tolerance and reduces nausea.
Recommended schedule
With a meal
100–200mcg selenomethionine, often paired with iodine for thyroid support.
Don't take with
- • High-dose iron at the exact same moment
- • Brazil nuts (a few nuts already supply daily needs)
FAQ
Selenomethionine vs selenite?
Selenomethionine is better absorbed and incorporated into selenoproteins.
How much is too much?
The adult tolerable upper limit is 400mcg/day. Symptoms of excess include hair loss, brittle nails, and garlic breath.
With iodine for thyroid?
Selenium supports the enzymes that activate thyroid hormone; the pairing is common in Hashimoto's protocols.
Sources
Go deeper on Selenium
Personalize your routine
Get a custom plan tailored to your goals and lifestyle.
Build my schedule