Serious side effects: Haloperidol injection can cause problems with the heart, problems controlling body or limb movements and a serious side effect called 'neuroleptic malignant syndrome'. It can also cause severe allergic reactions and blood clots. Be aware of serious side effects while using Haloperidol injection because urgent medical treatment may be needed. See Side Effects.
Medical check ups: The doctor may want to take an electrocardiogram (ECG) before or during the treatment with Haloperidol injection. The ECG measures the electrical activity of the heart.
Blood tests: The doctor may want to check the levels of potassium or magnesium (or other electrolytes) in the blood before or during the treatment with Haloperidol injection.
Haloperidol Injection contains: This medicine contains less than 1 mmol sodium (23mg) per dose, i.e. is essentially sodium free.
Driving and using machines: Haloperidol Injection can affect the ability to drive and use tools or machines. Side effects, such as feeling sleepy, may affect alertness, particularly when it is the first time using it or after a high dose. Do not drive or use any tools or machines without discussing with the doctor first.
Use in Elderly and people with dementia: A small increase in deaths and strokes has been reported for elderly people with dementia who are taking antipsychotic medicines. Talk to the doctor before giving Haloperidol injection to elderly, particularly if with dementia.
Talk to the doctor if the patient has: A slow heartbeat, heart disease or anyone in the close family has died suddenly of heart problems.
Low blood pressure, or feel dizzy upon sitting up or standing up.
A low level of potassium or magnesium (or other 'electrolyte') in the blood. The doctor will decide how to treat this.
Ever had bleeding in the brain, or with high possibility of having a stroke.
Epilepsy or has ever had fits (convulsions).
Problems with the kidneys, liver or thyroid gland.
A high level of the hormone 'prolactin' in the blood, or cancer that may be caused by high prolactin levels (such as breast cancer).
A history of blood clots, or family history of blood clots.
Depression, or has bipolar disorder and start to feel depressed.
Close monitoring may be needed, and the amount of Haloperidol injection may have to be altered.
If not sure if any of the previously mentioned applies, talk to the doctor or nurse before being given Haloperidol injection.
Use in Children and adolescents: Haloperidol Injection should not be used in children and adolescents below 18 years. This is because it has not been studied in these age groups.