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Eli Lilly get FDA approval for “under-arm” testosterone supplement

Posted Nov 29 2010 12:00am


According to a media release issued just before Thanksgiving, the FDA has approved a new formulation of testosterone supplement (originally developed by an Australian company called Acrux) and licensed to Eli Lilly & Co. for marketing in the USA and the rest of the world.

The use of testosterone supplements by men previously diagnosed with prostate cancer and other prostate disorders is more than a little controversial.  Indeed, the prescribing information for this new formulation, with the brand name Axiron®, includes very specific warnings about use of testosterone by men with a history of prostate cancer, at known risk for prostate cancer, or who have benign prostatic hypertrophy (BPH). Having said that, there are certainly patients who have testosterone deficiency after long-term hormone therapy who have successfully used testosterone supplements to regain physical vigor and sexual capabilities.

We had previously joked that Axiron would be available as a “roll on” underarm formulation (like a roll on deodorant). In fact, Axiron is supplied as a “pumped” formulation, with a specific amount of product to be administered under each armpit once a day using an applicator. The amount of product to be used can be varied based on a physician’s prescription but does need to be very strictly controlled and applied.

Obviously the use of testosterone supplementation by any prostate cancer patient needs to be managed with great care and caution, and preferably under the supervision of a physician who has some experience of the use of testosterone supplements in patients with prostate cancer. There is no form of testosterone supplement that has ever been approved by the FDA (or any other regulatory agency that we are aware of) for the management of low testosterone levels in men with prostate cancer.

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