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The products on this website are not available in their current form in the USA. A selection of TWYDIL® products appearing on this website have been exclusively and specifically produced to meet FDA guidelines and are being currently distributed in the USA. Please contact our exclusive US distributor for further information on available products:
+1 646 812 50 62.

Selenium (Se)

Selenium and its roles:
Selenium affects several systems: 
  • liver
  • muscular
  • blood circulation
  • immune response system
  • individual cell function

Selenium is the catalyst of one enzyme: the glutathione peroxidase. This enzyme controls the efficacy of the most powerful intra-cellular anti-oxidant: glutathione. The supply of selenium in feed must be closely controlled because excess amounts can cause a condition known as blind staggers. It influences various metabolic processes and it is closely associated with vitamin E.

The bioavailability of selenium is affected by other nutrients such as sulphur and ferric iron.

The needs for selenium are estimated at 0.04 mg per day and per kg of metabolic weight. But in case of important stress or training this value could be multiplied by three.

The metabolic weight corresponds to the horse's weight to the power of 0.75: for example a horse of 450 kg : 4500.75 = 98 kg of metabolic weight; such a horse will need 3.9 mg of this trace element per day.
TWYDIL® products that contain this ingredient:



Christmas Holidays

Our offices are closed from 24 December 2018 to 2 January 2019, 8 am. We thank you for your trust...

Product of the month




The season has begun and with the increase of the workload, the risk of gastric ulcers is maximum.

For your horses in lack of fitness, think of TWYDIL® STOMACARE. This product keeps your athletes in good shape, ensures their gastric well-being and strengthens their stomach defenses.

Studies show that the activity of the product is visible after 2 weeks with a maximum effect occuring after 4 weeks of complementation. TWYDIL® STOMACARE should be given 15 minutes before exercise.