Carlyle
Carlyle Selenium Supplement 200mcg | 270 Tablet Capsules | Essential Trace Mineral | Vegetarian, Non-GMO, Gluten Free
- Quantity
- 270 count
- Potency
- 200mcg
$8.99$0.03/count
View product Supplement guide Minerals
Selenium
Selenium is an essential trace mineral that acts as a powerful antioxidant in the body, supporting immune function and overall health. It plays a crucial role in protecting cells from oxidative damage and is important for thyroid function and hormone metabolism.
At a glance
Snapshot
- Primary goal
- Antioxidant support
- Dosage range
- 55-200 mcg daily
- Best time to take
- With meals
- Time to effect
- 2-4 weeks
- Common stacks
- Vitamin E, Zinc, Iodine
- Intake notes
- Avoid exceeding 400 mcg daily to prevent toxicity
Ranked picks
Top 3 Best Selenium Supplements
Bronson
Bronson Selenium 200 mcg Immune & Antioxidant Support Essential Mineral, 250 Vegetarian Tablets
- Quantity
- 250 count
- Potency
- 200 mcg
$9.97$0.04/count
View product
Solaray
Solaray Yeast Free Selenium 200mcg, Selenium Capsules for Healthy Thyroid Function & Immune Support, High Absorption Supplement, Vegan, 90 Servings, 90 VegCaps
- Quantity
- 90 count
- Potency
- 200mcg
$11.75$0.13/count
View productTop 10 Selenium Supplements
Carlyle
Carlyle Selenium Supplement 200mcg | 270 Tablet Capsules | Essential Trace Mineral | Vegetarian, Non-GMO, Gluten Free
- Quantity
- 270 count
- Potency
- 200mcg
- NootroScore
- 9.0
- Price
- $8.99$0.03/count
Bronson
Bronson Selenium 200 mcg Immune & Antioxidant Support Essential Mineral, 250 Vegetarian Tablets
- Quantity
- 250 count
- Potency
- 200 mcg
- NootroScore
- 9.0
- Price
- $9.97$0.04/count
Solaray
Solaray Yeast Free Selenium 200mcg, Selenium Capsules for Healthy Thyroid Function & Immune Support, High Absorption Supplement, Vegan, 90 Servings, 90 VegCaps
- Quantity
- 90 count
- Potency
- 200mcg
- NootroScore
- 8.7
- Price
- $11.75$0.13/count
Thorne
THORNE Selenium - 200 mcg Selenium Supplement for Antioxidant Support* - 60 Capsules
- Quantity
- 60 count
- Potency
- 200 mcg
- NootroScore
- 8.5
- Price
- $13.00$0.22/count
Nutricost
Nutricost Selenium 200mcg, 240 Vegetarian Capsules, Non-GMO, Gluten Free L-Selenomethionine
- Quantity
- 240 count
- Potency
- 200mcg
- NootroScore
- 8.4
- Price
- $13.95$0.06/count
Bronson
Bronson Selenium 200 mcg – Yeast Free Chelated Amino Acid Complex - Essential Trace Mineral with Superior Absorption, 250 Vegetarian Capsules
- Quantity
- 250 count
- Potency
- 200 mcg
- NootroScore
- 8.2
- Price
- $14.99$0.06/count
NOW Foods
Now Foods Now Foods, Selenium, (2 Pack) Yeast Free, 100 mcg, 250 Tablets
- Quantity
- 250 count
- Potency
- 100 mcg
- NootroScore
- 7.5
- Price
- $19.95$0.04/count
Now Foods
Now Foods Selenium 200 mcg VCaps, 180 Count (Pack of 2)
- Quantity
- 180 count
- Potency
- 200 mcg
- NootroScore
- 7.4
- Price
- $20.30$10.15/count
Earthier
Organic Selenium 200 mcg with Iodine and Silica All from Certified Organic Whole Foods - Two Month Supply
- Quantity
- 60 Count (Pack of 1)
- Potency
- 200 mcg
- NootroScore
- 7.4
- Price
- $19.95$0.33/count
Solgar
Solgar Yeast-Free Selenium 200 mcg, 250 Tablets - Supports Antioxidant & Immune System Health - Non-GMO, Vegan, Gluten Free, Dairy Free, Kosher - 250 Servings
- Quantity
- 250 count
- Potency
- 200 mcg
- NootroScore
- 7.1
- Price
- $22.24$0.09/count
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Frequently Asked Questions
Common questions about Selenium answered by our experts
- What are the benefits of taking selenium supplements?
- Selenium supplements support immune function, act as a powerful antioxidant to protect cells from oxidative damage, and are crucial for proper thyroid hormone metabolism. They may also reduce inflammation and lower the risk of certain chronic diseases when taken at appropriate doses.
- How much selenium should I take daily?
- The recommended daily allowance (RDA) for selenium is 55 mcg for adults, with an upper limit of 400 mcg to avoid toxicity. Higher doses may be used short-term under medical supervision, but excessive intake can lead to adverse effects like hair loss or gastrointestinal issues.
- Can selenium help with thyroid problems?
- Yes, selenium is essential for thyroid function as it helps convert thyroid hormones (T4 to T3) and protects the thyroid gland from oxidative damage. Some studies suggest it may benefit people with Hashimoto's thyroiditis, but consult your doctor before supplementing.
- What are the side effects of too much selenium?
- Excessive selenium intake (above 400 mcg/day) can cause selenosis, with symptoms like hair loss, brittle nails, nausea, fatigue, and nerve damage. Long-term overdose may lead to more serious complications, so stick to recommended doses unless directed otherwise by a healthcare provider.
- Does selenium interact with any medications?
- Selenium may interact with certain medications including blood thinners (like warfarin), some chemotherapy drugs, and medications that lower cholesterol. It's important to discuss selenium supplementation with your doctor if you're on any prescription medications.
- Which foods are high in selenium?
- Brazil nuts are the richest source (just 1-2 nuts can meet daily needs), followed by seafood (tuna, halibut, sardines), organ meats, poultry, eggs, and sunflower seeds. Soil selenium content affects plant-based sources, so levels vary by region.