Selenase™ has been formulated to provide supplementation of selenium to act
as an antioxidant, support normal cell function and development, support a
healthy thyroid and support a healthy immune system ‡

$19.00 or Original price was: $19.00.Current price is: $17.10. / month

(Subscriptions can be managed in your account and cancelled at any time without penalty.)

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Selenium is an important trace mineral and potent antioxidant that plays a role in supporting normal cell function and development.  Through free radical scavenging, selenium supports the body’s natural defenses and immune system.‡

Selenium has also been shown through numerous studies to support healthy thyroid function through the support of conversion of the thyroid hormone thyroxine (T4) to the active form triiodothyronine (T3).‡

Selenase™ provides selenium from the naturally-occurring amino acid, selenomethionine.  Studies have shown that selenium obtained from selenomethionine, the organic form, is more bioavailable and easier absorbed by the body than selenium from the inorganic form selenite.‡



Warning:  If you are pregnant or lactating woman, have any health conditions, or are taking any medication, make sure to consult your healthcare provider prior to use.

‡ These statements have not been evaluated by the Food and Drug Administration.
These products are not intended to diagnose, treat, cure or prevent any disease.



One capsule daily.


100 Capsules


Schnabel R, Lubos E, Messow CM, Sinning CR, Zeller T, Wild PS, Peetz D, Handy DE, Munzel T, Loscalzo J, Lackner KJ, Blankenberg S. Selenium supplementation improves antioxidant capacity in vitro and in vivo in patients with coronary artery disease The SElenium Therapy in Coronary Artery disease Patients (SETCAP) Study. Am Heart J. 2008 Dec;156(6):1201.e1-11. doi: 10.1016/j.ahj.2008.09.004. PMID: 19033020; PMCID: PMC3624729.

Sun P, Wang J, Liu W, Bu DP, Liu SJ, Zhang KZ. Hydroxy-selenomethionine: A novel organic selenium source that improves antioxidant status and selenium concentrations in milk and plasma of mid-lactation dairy cows. J Dairy Sci. 2017 Dec;100(12):9602-9610. doi: 10.3168/jds.2017-12610. Epub 2017 Oct 4. PMID: 28987589.

Konstantinos A. Toulis, Athanasios D. Anastasilakis, Thrasivoulos G. Tzellos, Dimitrios G. Goulis, and Dimitrios Kouvelas. Selenium Supplementation in the Treatment of Hashimoto’s Thyroiditis: A Systematic Review and a Meta-analysis. Thyroid.Oct 2010.1163-1173.http://doi.org/10.1089/thy.2009.0351

Hoffmann PR, Berry MJ. The influence of selenium on immune responses. Mol Nutr Food Res. 2008 Nov;52(11):1273-80. doi: 10.1002/mnfr.200700330. PMID: 18384097; PMCID: PMC3723386.

Hoffmann PR. Mechanisms by which selenium influences immune responses. Arch Immunol Ther Exp (Warsz). 2007 Sep-Oct;55(5):289-97. doi: 10.1007/s00005-007-0036-4. PMID: 18219759.

Roman M, Jitaru P, Barbante C. Selenium biochemistry and its role for human health. Metallomics. 2014 Jan;6(1):25-54. doi: 10.1039/c3mt00185g. PMID: 24185753.