Pentasa Oral

Pentasa Oral Side Effects

Diarrhea, headache, nausea, vomiting, or loss of appetite may occur. If any of these effects persist or worsen, notify 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.

Infrequently, this medication may make symptoms of your condition worse rather than better (acute intolerance syndrome or sensitivity reaction). Tell your doctor immediately if you experience any of these unlikely but serious side effects:

• worsening stomach pain/cramping
• worsening bloody diarrhea
• fever
• headache

Tell your doctor immediately if any of these rare but very serious side effects occur:

• vomit that looks like coffee grounds
• black/tarry stools
• unusual tiredness
• fast/pounding heartbeat
• chest pain
• shortness of breath
• unusual bleeding/bruising
• change in the amount of urine
• dark urine
• persistent nausea/vomiting
• severe stomach/abdominal pain
• yellowing of the eyes/skin
• signs of infection (e.g., fever, persistent sore throat)
• a man's ability to father a child

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include:

• rash
• itching
• swelling
• 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.