How Long Does Test Cyp Last Once Open?

I just picked up a script for test cyp and I got a 10ml bottle of 200mg/ml. The pharmacist says that the test will only last 28 days before going bad. Any truth to this?

For the first 8 years or so, my TRT script was in a 10ml multi-dose vial, where I was taking 0.5ml every five days, so it lasted 95 days. I suppose it still was effective. Seemed as so. As I understand it there is an oil based alcohol in the mixture to help prevent it from going rancid.

But a few years I asked the pharmacy for 1ml multi-dose vials, so now it only has to last 5 days.

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It will last at least a year.

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It’s just an issue of vial sterility, not that the test has gone bad. It should last for years & retain effectiveness. I looked up the actual deal

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That makes sense. Any tips on keeping it sterile?

Anyone ever have any issues with this?

Keep it in the med cabinet or whatever med case you use, and always sterilize the membrane with alcohol before use.

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This is big brother being overly cautious to the point of absurdity.

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I had issues with 10ml vials. My 18g needle would break tiny pieces of the rubber off into the vial. I didn’t want to chance injecting rubber, so I asked for 1 ml vials.

I have had black market test around longer then that after opened and no problems. The Test C 200 I get from CVS now comes in 1cc vials makes it a bit easier plus u can get 12cc to last the whole 90 days