Along with its needing effects, a drug may cause some unwanted effects. Some side effects may not have signs or symptoms that you can see or feel. Clozapine can cause some very serious blood problems. Your family doctor will watch for these by doing blood tests every week or two for as long as you are taking clozapine and for 4 weeks after you stop taking it. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your family doctor immediately if any of the following side effects was happen
More common
Fast or irregular heartbeat; fever; low blood pressure
Less common
High blood pressure - severe or continuing headache
Rare
Chest pain or discomfort; chills; convulsions - seizures; cough; difficult or fast breathing or sudden shortness of breath; fainting; increased sweating; loss of bladder control; muscle stiffness - severe; sore throat; sores, ulcers, or white spots on lips or in mouth; swelling or pain in leg; trouble breathing; unusual bleeding or bruising; unusual tiredness or weakness; unusually pale skin
Check with your family doctor as soon as possible if any of the following side effects was happen
More common
Dizziness, especially when getting up from a lying or sitting position
Less common
Blurred vision; confusion; restlessness or need to keep moving; unusual anxiety, nervousness, or irritability
Rare
Absence of or decrease in movement; decreased sexual ability; high blood sugar - increased appetite, increased thirst, increased urination, weakness; lip smacking or puckering; liver problems - dark urine, decreased appetite, nausea, vomiting, yellow eyes or skin; mental depression; puffing of cheeks; rapid or worm-like movements of tongue; trembling or shaking; trouble in sleeping; trouble in urinating; uncontrolled chewing movements; uncontrolled movements of arms and legs
Symptoms of overdose
Convulsions - seizures; dizziness or fainting; drowsiness - severe or coma; fast, slow, or irregular heartbeat; hallucinations - seeing, hearing, or feeling things that are not there; increased watering of mouth - severe; slow, irregular, or troubled breathing; unusual excitement, nervousness, or restlessness
More common side effects may occur that usually don't needed medical attention. These side effects may go away during treat as your body adjusts to the drug. However, check with your family doctor if any of the following side effects continue or are bothersome:
More common
Constipation; dizziness or lightheadedness - mild; drowsiness; headache - mild; increased watering of mouth; nausea or vomiting; unusual weight gain
Less common
Abdominal discomfort or heartburn; dryness of mouth
Other side effects not listed above may also occur in some diseaseds. If you notice any other problems, check with your family doctor.