My Husband Been On Clexine Injections For 3 Years He

My husband been on clexine injections for 3 years he as one injection a day , his stomach. is like a pin cushion , he as prostate cancer. And was on chemotherapy and had a blood o. n the spine and chest this was 3 years a go. Is there any alternative or could he come of the medication as he no longer requires chemotherapy.