Asacol is used for treating ulcerative colitis, proctosigmoiditis and proctitis. The drug also prevents ulcerative colitis from recurring.

The drug can be taken with food or without food. But take the medicine with a full glass of water. When you are on Asacol medication, you have to strictly follow your doctor. Never go for larger doses or take the drug for longer periods unless your doctor has recommended it. Take care that Asacol is swallowed whole and not crushed, broken or chewed. As Asacol is an extended release capsule, the drug should have to enter the body only slowly.

Once you are prescribed Asacol, do not discontinue in the middle of a course as it can only complicate things. And do not miss any dosage if you want better results. If you miss a dose take it as soon as you remember it. But skip the missed dose if it is time for taking your regular dosage. Do not take two doses of Asacol at the same time. When taking the medication, beware of overdose. In case you feel to have taken more of the dose, immediately contact your doctor. Some of the overdose symptoms include dizziness, ringing in your ears, sweating, headache, vomiting, drowsiness, shortness of breath and diarrhea.

You should also tell your doctor about all your allergic reactions before he prescribes Asacol. Tell the physician if you have any allergies to any food, medicine or any substance, including the ingredients of Asacol.

You should also inform your doctor about all your present and past medical history so that he will be able to take a wise decision in the prescription. Discuss with your doctor if you have pyloric stenosis (a stomach condition), congestive heart failure, history of allergy to sulfasalazine, disease of the kidney or liver. If you have any of the above-mentioned allergies or health conditions, your doctor may choose a drug adjustment and may also recommend frequent monitoring.

The drug is FDA pregnancy category B. Though Asacol is not known to cause harm to the newborn, it is better if pregnant women or those who aspire to get pregnant take the drug after talking with the doctor. As the drug, which is dangerous to the newborn, may pass into breast milk, women who feed their children should not use the drug.

You should also discuss with the doctor about all the medicines, including prescriptive or non-prescriptive drugs, herbal medicines or diet supplements, which you are taking. Tell the doctor if you are using azathioprine, pentamidine, tacrolimus, antibiotics, antiviral medicines, cancer medicines and non-steroidal anti-inflammatory drugs.

Asacol is also known to come with many serious allergic reactions and side effects. Seek immediate help if you come across difficulty breathing, swelling (face, lips, tongue, throat). Well you have to stop taking the drug and immediately contact your doctor if you come across serious side effects like fever, cramping, severe stomach pain, headache and bloody diarrhoea.

Some of the lesser-known side effects that come with Asacol include mild nausea, diarrhoea, vomiting, sore throat and flu symptoms.