I'm getting 12ml's of test cyp from sachets and I have read alot of people complaining about them being rather painful. I've seen a post or two with people cutting it with B-12. I have a 30ml bottle of B-12 and was thinking of just filling the B-12 bottle with the test from the sachets and only leaving the remainder inside to cut it with. How much should I leave in the bottle for 12cc's and should I be concerned about taking too much B-12?

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