This website has been developed by Besins Healthcare (UK) Ltd.

This website has separate sections for healthcare professionals (containing promotional information), and patients who have been prescribed Testogel® (testosterone) 16.2 mg/g gel, within the UK.

Please confirm that:

This website is provided for HCPs in the UK by Besins Healthcare (UK) Ltd.

Talking testosterone
deficiency (TD)

Talking Testosterone Deficiency

Role of testosterone

Testosterone is well known for its role as the primary male sex hormone, promoting secondary sexual characteristics and the formation of reproductive tissues.

Testosterone also has wide ranging roles in maintaining the homeostasis of many bodily processes, with testosterone levels appearing to directly affect overall male health:1,2

Role of testosterone


  1. Hackett G, Kirby M, Edwards D, et al. British Society for Sexual Medicine Guidelines on Adult Testosterone Deficiency, With Statements for UK Practice. J Sex Med. 2017;14(12):1504–1523.
  2. Traish AM. Adverse health effects of testosterone deficiency (TD) in men. Steroids. 2014;88:106–116.
  3. Mammi C, Calanchini M, Antelmi A, et al. Androgens and Adipose Tissue in Males: A Complex and Reciprocal Interplay. Int J Endocrinol. 2012.
  4. Xu W, Morford J, Mauvais-Jarvis F. Emerging role of testosterone in pancreatic β cell function and insulin secretion. J Endocrinol. 2019;240(3):R97–R105.

TES/2020/009. April 2021.

Adverse event reporting

Adverse events should be reported. Reporting forms and information can be found at or search for MHRA Yellow Card in the Google Play or Apple App Store. Adverse events should also be reported to Besins Healthcare (UK) Ltd Drug Safety on 0203 862 0920 or Email: