This is a decision you and your doctor will make. Tell your doctor if you have ever had any unusual or allergic reaction to haloperidol. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes. Haloperidol has not been studied in pregnant women. However, studies in animals given 2 to 20 times the usual maximum human dose of haloperidol have shown reduced fertility, delayed delivery, cleft palate, and an increase in the number of stillbirths and newborn deaths.
Haloperidol passes into breast milk.
Animal studies have shown that haloperidol in breast milk causes drowsiness and unusual muscle movements in the nursing offspring. Breast-feeding is not recommended during treatment with haloperidol. Side effects, especially muscle spasms of the neck and back, twisting movements of the body, trembling of fingers and hands, and inability to move the eyes are more likely to occur in children, who usually are more sensitive than adults to the effects of haloperidol. Although certain medicines should not be used together at all, in other cases 2 different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary.