If you have an allergy to histrelin or any other part of this drug.
If you are a woman. This drug is not approved for use in women. If you are a woman using this drug, talk with your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding.
This drug is placed under the skin in the upper arm. This is minor surgery. Your doctor will do this.
Keep the arm where this drug is placed dry for 24 hours after it is placed. Avoid bathing and swimming for 24 hours.