• ​Constipation
• Drink more water (if not fluid restricted), eat more high fibre foods
• Dry mouth

• Chew sugar-free gum, suck on sugar-free hard candies or ice chips, sip water regularly
  
• Dry eyes 

• Use a lubricating eye drop
  
• Light-headedness (especially during a sudden change in posture)

• Get up slowly from sitting or lying down position
• Feeling tired or drowsy 

• Avoid driving or engaging in activities requiring concentration 
  

​Inform your healthcare professional if: 

• You are allergic to this medication or any of the other ingredients of this medication
• You are pregnant, planning to become pregnant, or breastfeeding
• You are taking any other medications, including supplements, traditional medications and herbal remedies
• Medical conditions such as heart disease, dementia, liver and kidney disease, seizure (fits), phaeochromocytoma (tumour on the adrenal gland)
  

​Avoid drinking alcohol while taking this medication as it can increase drowsiness side effect 

​The symptoms of a drug allergy include one or more of the following: 

• Swollen face/eyes/lips/tongue
• Difficulty in breathing
• Itchy skin rashes over your whole body

Rarely this medication may cause:

•  High fever, severe muscle stiffness, confusion, irregular blood pressure (signs and symptoms of neuroleptic malignant syndrome)
• Muscle stiffness and spasms (such as in the face, neck and back), difficulty in speaking or swallowing, twitching or upward rolling of eyes (dystonia)
• Uncontrollable movements (such as in the face, tongue, jaw or other parts of the body) ({tardive dyskinesia)
• Fever, sore throat and/or mouth ulcers that do not go away (symptoms of blood dyscrasia)
• Increased prolactin hormone in the blood (hyperprolactinemia)
• Changes in menstrual cycle in females (irregular or stopping of menstrual periods) and/or
• Abnormal breast swelling, soreness or secretion (in both men and women)  

If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately