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Trelstar (Triptorelin Pamoate Vial)

Drug:Trelstar Vial 3 Month Slow-Release
ManufacturerKnight Therapeutics Inc
Dosage:11.25 mg

Trelstar (Triptorelin Pamoate Vial) is a prescription medication used in men to treat the symptoms of prostate cancer. Trelstar is a man-made form of a hormone that regulates many processes in the body. It has been designed to mimic the actions of gonadotropin releasing hormone (GnRH or luteinizing hormone releasing hormone, LHRH). Trelstar works by reducing the amount of testosterone in the blood, which can cause the prostate cancer to grow. This medication will only treat the symptoms of prostate cancer and it does not treat the cancer itself.

Manufacturer Information

We currently offer the brand Trelstar from Canada manufactured by Knight Therapeutics Inc. It is available in the strength of 3.75 mg slow release 28 day vial and 11.25 mg slow release three month vial. The generic version is not available.

Stop taking Trelstar and call your doctor at once if you have one of these serious side effects:

• No menstrual periods
• Depression, emotional changes, irritability
• Ankle swelling
• Infection of bladder and kidneys

Less serious side effects include tiredness, vomiting, nausea, viral infection, pain, dizziness, hot flushes, reduction in sex drive, headaches, emotional changes, acne, reduction in breast size and vaginal dryness, local skin reaction at the injection site, such as itching, redness, burning and swelling. Please call your doctor if you have any further concerns or questions.

Since Trelstar may cause dizziness, you should know how this medication affects you, before driving a vehicle or operating machinery. Do not take Trelstar if you are allergic to triptorelin, or to drugs called as LHRH agonists or any ingredients in the vial, are or may become pregnant, are breastfeeding, have abnormal vaginal bleeding that has not been checked by your doctor, are a woman under 18 years of age. Although, no formal drug interaction studies have been conducted with Trelstar, you should always tell your health care professional about any medications that you have been taking or are going to take including prescription and non-prescription drugs, vitamins and herbal supplements.


1. https://allergan-web-cdn-prod.azureedge.net/allergancanadaspecialty/allergancanadaspecialty/media/actavis-canada-specialty/en/products/pms/trelstar-pm-endms-eng_27july2016.pdf

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