Zytiga has some potentially serious side effects, including those involving the heart and circulatory system. It's worth a discussion with your father's medical team.
Firmagon has been shown to have less cardiac risks than Lupron and equally effective lowering testosterone. It’s a monthly uncomfortable subcutaneous injection so is not as well known.
Refining the injection technique for Firmagon can alleviate much if not all of the discomfort:
1) 45-degree or possibly more injection angle,
2) Slow injection,
3) Leave the needle in for one minute before withdrawal, and
4) Slow withdrawal.
The goal is ito nject the solution is deeply as possible, and let it solidify so it doesn't track the needle pathway back to near the skin surface where the irritation and discomfort occurs.
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