Does activated charcoal interfere with testosterone cypionate?

No! I am assuming you are not injecting both. A questionable yes?????????????????????
No. Activated charcoal is given orally to minimize risk of or treat overdose. Testosterone cypionate is injected. Therefore, activated charcoal should not interfere w/blood levels of testosterone derived from injection. However, it would always be a good idea to follow up w/your family doc as to why activated charcoal was given as well as w/whoever prescribed testosterone to insure close follow up.