Shopping bag

Tri-Selenium Capsules

Share this product


Suitable for vegetarians: Yes

Suitable for vegans: Yes

In Stock - Order by 3pm for same day dispatch

Free UK delivery via Royal Mail Second Class post on all online orders

What is Tri-Selenium?

Metabolics Tri Selenium capsules contain a unique combination of three selenium forms making this a highly bioavailable Selenium supplement, meaning it is easily absorbed by the body.

These three forms are:

Sodium Selenate

Methylselenocysteine (MSC)

L Selenomethionine

The inorganic form, Sodium Selenate, is metabolised to sodium selenite in the body and the other two, MSC Methylselenocysteine and Selenomethionine, are organic forms.

Selenium in any form, whether from food or supplements, organic or inorganic, is utilized by the body for selenoprotein synthesis after first being metabolized to hydrogen selenide, the cellular storage form of selenium. Surplus selenium is converted to methylated metabolites and excreted via the urine and in the breath.

What is Tri-Selenium good for?

Selenium is an important nutrient for a wide variety of bodily functions and to keep us healthy. These functions include:

Selenium contributes to normal spermatogenesis

Selenium contributes to the maintenance of normal hair

Selenium contributes to the maintenance of normal nails

Selenium contributes to the normal function of the immune system

Selenium contributes to the normal thyroid function

Selenium contributes to the protection of cells from oxidative stress

Who is Tri-Selenium for?

Tri-Selenium Capsules should not be used as a substitute for a varied diet.

Selenium can be obtained through diet with the different forms in Tri-Selenium Capsules being found in a variety of foods.

Methylselenocysteine is the predominant form of selenium, as an organic form, in allium and brassica plants including onions and garlic, and cruciferous vegetables such as broccoli and cabbage.

Selenomethionine is also an organic form and is formed in plants during the synthesis of the amino acid methionine, when selenium substitutes for sulfur and becomes incorporated into proteins in place of methionine. It is the predominant form of selenium in brazil nuts, cereals, legumes and fish. Selenate, as the only inorganic form in Tri-Selenium Capsules, is grown in seleniferous soil and is the predominant form of selenium in shellfish and vegetables that are not a part of the allium and brassica families.

Where you cannot obtain enough selenium through diet, Tri-Selenium Capsules are a way of increasing your selenium intake.

Why use Metabolics Tri-Selenium

When you buy Tri-Selenium from Metabolics you can be sure you are purchasing a superior quality food supplement made with only the purest ingredients. We also pride ourselves on exceptionally fast dispatch of orders, dispatching the same day when an order is placed before 3pm Monday to Friday, this means you receive your delivery as quickly as possible.

In addition to the quality of the raw ingredients, optimum bioavailability is ensured through using the three different forms of selenium in this Tri-Selenium Capsules product.

Food supplements made to GMP standards.

Made in our clean room facility, here in the UK.

ISO accredited ISO:9001 and ISO:14001 accredited.

Tri-Selenium Capsules

Tri-Selenium Food Supplement 60 Capsules


Cellulose, Hydroxypropyl Methylcellulose (capsule), Dicalcium Phosphate, Methylselenocysteine, L Selenomethionine, Sodium Selenate.

Directions: Recommended dose 1 capsule per day before food*. Do not exceed this recommended dose. Consume within 3 months of opening.

Warning: If pregnant or breast feeding, consult your healthcare practitioner before using. Adult use only. This product should not be used as a substitute for a varied diet.

Storage: Store in a cool, dry place out of reach of children.                                                                       


*The stated recommended dose can be changed as directed by your healthcare practitioner.


Product information

Serving Size: 1 capsule

Each capsule contains:                                 %NRV*


Total Selenium ………………… 196 mcg   …… 356%

[Equal amounts of Selenium from:

Methylselenocysteine (MSC),

L Selenomethionine & Sodium Selenate]


† Nutrient Reference Value (NRV*) not established

Write Your Own Review

You're reviewing: Tri-Selenium Capsules

How do you rate this product?*
  1 star 2 stars 3 stars 4 stars 5 stars
Speed of delivery

© Metabolics ltd, 2019. All rights reserved. Metabolics is a limited company registered in England and Wales 2844683. VAT registration number GB 249 9873 34.

Metabolics ltd is registered with the U.S Food and Drug Administration pursuant to the Federal Food Drug and Cosmetic Act, as amended by the Bioterrorism Act of 2002 and the FDA Food Safety Modernization Act. 

Payments Accepted Online By Safe online payment via SAGEPAY

Privacy Policy | FAQs