Cough, upset stomach, loss of appetite, nausea, vomiting, diarrhea, dizziness, headache, burning feeling in the throat, or unusual taste/dryness in the mouth may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor or respiratory therapist right away if any of these unlikely but serious side effects occur: chest tightness, breathing problems.
Though very unlikely, inhaled pentamidine might be absorbed into your body. Tell your doctor right away if any of these rare but serious side effects occur: abdominal pain, easy bruising/bleeding, fast/irregular heartbeat, mental/mood changes (such as confusion, hallucinations), signs of kidney problems (such as change in the amount of urine), signs of anemia (such as severe tiredness, bluish skin/nails), signs of low blood pressure (such as severe dizziness, pale skin, fainting), signs of low blood sugar (such as sudden sweating, shaking, fast heartbeat, hunger), signs of high blood sugar (such as unusual increase in thirst or urination), signs of infection (such as fever, chills, persistent sore throat).
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: 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 or at www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.