Health Canada Approves KYZATREX®: Oral Testosterone Pill Set to Transform Men’s Health in 2026

madman

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This is great news!

Marius running the game here!

* According to the company, the medication will be made available through telehealth and traditional provider options in the first half of 2026. Marius plans to work closely with physicians in Canada to “ensure appropriate patient access, education, and monitoring.”



Key Takeaways​


  • Health Canada approved testosterone undecanoate for men with low testosterone due to medical conditions, available by mid-2026.

  • A phase 3 trial showed 88% of patients achieved normal testosterone levels, with improved hypogonadism symptoms.

  • The treatment was well-tolerated, with hypertension as the most common adverse event, reported in 2.6% of patients.

  • Marius Pharmaceuticals plans to collaborate with Canadian healthcare providers for patient access, education, and monitoring.




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The safety and efficacy of testosterone undecanoate was demonstrated in the phase 3, six-month MRS-TU-2019EXT trial.


Health Canada has approved testosterone undecanoate (Kyzatrex) CIII capsules for adult men with low or no testosterone levels due to certain medical conditions, Marius Pharmaceuticals announced in a news release.1

According to the company, the medication will be made available through telehealth and traditional provider options in the first half of 2026. Marius plans to work closely with physicians in Canada to “ensure appropriate patient access, education, and monitoring.”

Today’s approval of KYZATREX by Health Canada is a major milestone for Marius Pharma and for men’s health in Canada,” said Amit Shah, Chief Operating Officer of Marius Pharmaceuticals, in the news release.1 “We recognize the burden that testosterone deficiency places on men’s physical, cognitive, and metabolic health, and we are committed to expanding access to effective, convenient treatment options. We look forward to partnering with Canadian health care providers to bring KYZATREX to patients who may benefit.”

Testosterone undecanoate is “a softgel oral formulation absorbed primarily via the lymphatic system (meaning it is not toxic to the liver),” according to Marius Pharmaceuticals. The medication was approved by the FDA in August 2022 for men with conditions associated with a deficiency or absence of endogenous testosterone.

The safety and efficacy of testosterone undecanoate was demonstrated in an open-label, phase 3 extension trial, MRS-TU-2019EXT (NCT04467697). Findings from the study were recently published in Therapeutic Advances in Urology.2

In total, the 6-month trial included 155 hypogonadal men aged 18 to 65 years who received testosterone undecanoate starting at 200 mg twice daily with meals. Doses were titrated over two 28-day cycles between 100 mg and 800 mg daily.

Overall, 88% of patients in the efficacy-evaluable population (n = 139) achieved the primary end point of a mean plasma total testosterone concentration (Cavg) over 24 hours within the normal range (222 to 800 ng/dL) on the final pharmacokinetic visit of the study (day 90). Patient-reported outcomes also showed that patients who received testosterone undecanoate saw improvements in the symptoms of hypogonadism, which included improvements in quality of life, energy/fatigue, erectile function, sexual intercourse, and mood.

Treatment was well-tolerated, with no drug-related serious adverse events reported. The most common adverse event in the testosterone undecanoate arm, reported in 2.6% of patients, was hypertension.





 
 

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Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

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Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

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The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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