Haloperidol Decanoate IM

In Depth

This medication may rarely cause a serious condition called neuroleptic malignant syndrome (NMS). Seek immediate medical attention if you develop any of the following symptoms: fever, muscle stiffness, severe confusion, increased sweating, fast/irregular heartbeat.

Tell your doctor immediately if any of these rare but very serious side effects occur:

dark urine
persistent nausea/vomiting
stomach/abdominal pain
yellowing of eyes/skin
seizures
signs of infection (such as fever, persistent sore throat)

Seek immediate medical attention if any of these rare but very serious side effects occur:

slow/fast/irregular heartbeat
severe dizziness
chest pain
fainting

A very severe allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include:

rash
itching/swelling (especially of the face/tongue/throat)
severe dizziness
trouble breathing

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Haloperidol Decanoate IM Precautions

Before using haloperidol, tell your doctor or pharmacist if you are allergic to it; if you are allergic to sesame; or if you have any other allergies. This product may contain other inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have: