NOW Foods has three selenium products at Supps247: Selenium 100 mcg, 100 tablets, Selenium 200 mcg and Selenium 200 mcg, 180 veg capsules. They are yeast-free.
At a glance
| Strength | Compared with the 150 mcg supplement warning |
|---|---|
| 100 mcg | Under it |
| 200 mcg | Above it |
What to know
Selenium is an essential trace mineral used in antioxidant enzymes and thyroid hormone metabolism. Adults need about 60 to 70 mcg a day, and the upper level from all sources in Australia is 400 mcg a day. Australian supplement labels warn not to exceed 150 mcg of selenium a day from supplements. The 100 mcg tablet fits within that. The 200 mcg products do not, so use them only on a health professional's advice.
Who should check first
- Taking a multivitamin or NAC with selenium: do not double up.
- Thyroid conditions: speak to your doctor first.
- Pregnant or breastfeeding: check with your doctor first.
How to use and where to buy
A garlic smell on the breath, brittle nails and hair loss are signs of too much selenium. Follow the label on each product. Shop them online at Supps247 with Australia-wide delivery or click and collect, or browse more from NOW Foods.
Checked against the product listings on 12 November 2026. Always read the label and follow the directions. General information, not medical advice.
