Selenium as methylselenocysteine, the form from garlic and broccoli.
£21.48
£0.36 per day £0.36 per capsule
In stock. Orders before 2pm Mon-Fri are dispatched same day.
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Selenium SeMSC Capsules give you selenium as methylselenocysteine, the form found in garlic, onions and broccoli. Each capsule provides 200mcg of selenium and you take one a day away from food. One pot holds 60 capsules, which is a 60 day supply.
Selenium is a trace mineral your thyroid and immune system both rely on. Intake from UK food is often below the reference value. Unlike selenium methionine, this form is not stored in body proteins, so it is used more directly.
Selenium SeMSC Capsules are most useful for:
For the food form that builds a selenium store, choose Selenium Methionine Capsules.
Each capsule provides 200mcg of selenium as methylselenocysteine, which is 364% of the daily reference value. The other ingredients are cellulose, calcium phosphate and the vegetable capsule shell. Se-methylselenocysteine, MSC and SeMSC are other names for it.
Take one capsule once a day, away from food. Keep to one a day and do not combine it with another selenium product.
The capsules are suitable for vegans and vegetarians. They are free from gluten, dairy and nuts.
The capsules are made in the UK in a GMP certified cleanroom facility accredited to ISO 9001 and ISO 14001. Every batch is traceable from raw material to finished product. Like every supplement Nutri Tailor stocks, they are practitioner grade and guaranteed additive free.
How is SeMSC different from selenium methionine?
Selenium methionine is built into body proteins as a selenium store and is the form used in most thyroid research. Methylselenocysteine is not stored that way, because it is converted directly and cleared. Both give 200mcg of selenium per capsule.
How much selenium should I take a day?
Take one capsule a day, which gives you 200mcg. Selenium is a mineral where more is not better, so do not add another selenium product on top.
When is the best time to take it?
Take it at any time of day, away from food, as the label directs.
Can I take it with a multivitamin?
Only if the multivitamin does not already carry a full selenium amount, because the two add up. Check the label before you combine them.
Does selenium have side effects?
Not at one capsule a day. Problems come from too much selenium over time, which is why the label amount is the limit.
Why capsules rather than tablets?
A capsule is a cellulose shell around the powder, so it needs none of the binders or coating that hold a tablet together.
Order before 2pm Monday to Friday and your capsules are dispatched the same day from the UK. Standard UK delivery by Royal Mail Tracked 48 takes 2 to 4 working days and costs £3.35, or it is free when you spend £35 or more. Faster delivery is available at checkout. Nutri Tailor also ships worldwide, with duties and taxes shown before you pay. You can return unopened items within 30 days of delivery. New customers get 10% off their first order.
Nutri Tailor is rated 4.6 out of 5, "Excellent", on Trustpilot. Every supplement is chosen by experienced nutritional therapists. Kasia Key, Registered Associate Nutritionist, says: "I use Nutri Tailor for myself and my clients because you can be certain that their supplements are industry leading quality."
The information on this page draws on the NHS and the NIH Office of Dietary Supplements.
| Each capsule contains: | %NRV* | |
|---|---|---|
| Selenium | 200 mcg | 364% |
| (as Methylselenocysteine) |
* Nutrient Reference Value
Also listed as Se-methylselenocysteine, methylselenocysteine, MSC, SeMSC.
Suitable for men.
Suitable for women.
Consult your healthcare practitioner before use if pregnant or breastfeeding.
Suitable for vegetarians.
Suitable for vegans.
No gluten containing ingredients.
No nut containing ingredients.
No dairy containing ingredients.
If you are taking prescribed medicines or under medical supervision, consult your healthcare practitioner before use.
Store in a cool dry place.
Keep out of reach of children.
This information is not a substitute for advice from a healthcare practitioner.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
This product is in stock. Orders placed before 2pm Mon-Fri are dispatched the same day.
UK Standard Delivery (Royal Mail Tracked 48, 2 to 4 working days) is £3.35, or free on orders of £35 or more. Express Delivery (Tracked 24, 1 to 2 working days) is £5.65, free on orders of £60 or more. Next Day Delivery (Royal Mail Special Delivery) is £8.50, free on orders of £100 or more; order before 2pm on a working day for next-working-day arrival. We dispatch Monday to Friday.
Delivery and worldwide shipping options are shown at checkout, with duties and taxes included.
Unopened items in their original packaging can be returned within 30 days of delivery.
New customers get 10% off their first order.

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Selenium SeMSC provides an essential mineral supporting multiple body functions.
Take with food for best absorption. Be aware of interactions.
A blood test is the most reliable way to assess status.
Yes, many minerals affect medication absorption. Space supplements from medications by 2-4 hours.
People who want the methylselenocysteine form of selenium specifically, usually on a practitioner's suggestion, people already taking selenomethionine who want to alternate forms rather than combine them, and anyone who wants selenium from the form found in garlic, onions and broccoli rather than a yeast or inorganic source. Keep to one capsule a day and do not combine it with another selenium product.
Selenomethionine is built into body proteins as a selenium store and is the form used in most thyroid research. Methylselenocysteine is not stored that way; it is converted directly to methylselenol and cleared. Both give 200 mcg of selenium per capsule. Selenium contributes to normal thyroid function, normal immune function and the protection of cells from oxidative stress.
Tablets need binders, fillers and a coating to hold their shape. A capsule is a cellulose shell around the powder, so it carries no binders and breaks down quickly once swallowed.
