Yep about 50 hours give or take. It's why it's best to take AI's 24 hours after a test cyp injection as they both peak at about the same time.
I've been taking my anastrozole about 12 hours post injection. Do you think switching to 24 makes much difference from 12?
Test Cyp peaks in serum at about 72 hours after the injection and an AI has a ~50 half life so in theory both peak at about the same time which would be optimal for staving off aroamatase synthesis.
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