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Lialda
Generic name: mesalamine (oral)
What is Lialda?
Lialda affects a substance in the body that causes inflammation, tissue damage, and diarrhea.
Lialda is used to treat mild to moderate active ulcerative colitis in adults and children who weight at least 24kg.
Lialda is also used in adults as a maintenance treatment to prevent the symptoms of ulcerative colitis from recurring.
How should I take Lialda?
Take Lialda exactly as prescribed by your doctor. Follow all directions on your prescription label and read all medication guides or instruction sheets.
This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using Lialda.
Lialda should be taken with a meal.
Drink plenty of liquids to help prevent kidney stones.
Swallow the Lialda tablet whole and do not crush, chew, or break it. Tell your doctor if you have trouble swallowing the tablet.
Your urine may look reddish-brown if it mixes with bleach in the toilet bowl. This is normal. Call your doctor only if your urine is discolored before it touches the toilet water.
Call your doctor if your ulcerative colitis symptoms do not improve, or if they get worse.
This medicine can affect the results of certain medical tests. Tell any doctor who treats you that you are using Lialda.
You may need frequent blood tests to check your blood cells or kidney function.
Store at room temperature away from moisture and heat.
Warnings
Stop using Lialda and call your doctor at once if you have severe stomach pain, stomach cramping, bloody diarrhea (may occur with fever, headache, and skin rash).
Before taking this medicine
You should not use Lialda if you are allergic to mesalamine, aspirin, sulfasalazine, or salicylates (such as Disalcid, Doans Pills, Dolobid, Kaopectate, Nuprin Backache, Pepto-Bismol, Tricosal, Trilisate, and others).
To make sure Lialda is safe for you, tell your doctor if you have ever had:
- a kidney stone or kidney disease;
- liver disease;
- a blockage in your stomach or intestines (such as pyloric stenosis); or
- a skin condition such as eczema.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known whether mesalamine will harm an unborn baby. However, having untreated or uncontrolled ulcerative colitis during pregnancy may cause complications such as low birth weight or premature birth. The benefit of treating ulcerative colitis may outweigh any risks to the baby.
It may not be safe to breastfeed while using Lialda. Ask your doctor about any risk. If you are breastfeeding, tell your doctor if you notice diarrhea in the nursing baby.
Lialda side effects
Get emergency medical help if you have signs of an allergic reaction to Lialda: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using Lialda and call your doctor at once if you have:
- severe stomach pain, stomach cramping, bloody diarrhea;
- fever, headache, general ill feeling;
- new or worsening skin rash, itching, eye redness, skin pain, or a red or purple skin rash that spreads and causes blistering and peeling;
- bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds;
- low white blood cell counts - fever, chills, mouth sores, skin sores, sore throat, cough, feeling light-headed, trouble breathing;
- signs of a kidney stone - severe pain in your side and back, frequent need to urinate, foul-smelling urine, dark or cloudy urine;
- kidney problems - increased or decreased urination, swelling, weight gain; or
- liver problems - loss of appetite, upper stomach pain, tiredness, easy bruising or bleeding, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
Low white blood cell counts may be more likely in older adults.
Common Lialda side effects may include:
- burping, constipation, nausea, vomiting, stomach pain, diarrhea, gas;
- dizziness;
- cold symptoms such as stuffy nose, sneezing, sore throat;
- back pain;
- headache;
- rash; or
- abnormal liver function tests.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Dosing information
Usual Adult Dose of Lialda for Ulcerative Colitis -- Active:
1200 mg tablets: 2.4 to 4.8 g (two to four tablets) orally once a day with food.
Usual Adult Dose of Lialda for Ulcerative Colitis -- Maintenance:
1200 mg tablets: 2.4 g (two tablets) orally once a day with food.
Usual Pediatric Dose of Lialda for Ulcerative Colitis -- Active:
Patient weight - 24 kg to 35 kg: from week 0 to week 8, two 1.2 g tablets once daily. After week 8, one 1.2 g tablet once daily. Greater than 35 kg to 50 kg: from week 0 to week 8, three 1.2 g tablets once daily. After week 8, two 1.2 g tablets once daily. Greater than 50 kg: from week 0 to week 8, four 1.2 g tablets once daily. After week 8, two 1.2 g tablets once daily.
What happens if I miss a dose?
Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
If you have a skin condition such as eczema, mesalamine could make you sunburn more easily. Avoid sunlight or tanning beds. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.
What other drugs will affect Lialda?
Mesalamine can harm your kidneys, especially if you also use certain medicines for infections, cancer, osteoporosis, organ transplant rejection, bowel disorders, high blood pressure, or pain or arthritis (including Advil, Motrin, and Aleve).
Tell your doctor about all your other medicines, especially:
- azathioprine or 6-mercaptopurine.
This list is not complete. Other drugs may interact with mesalamine, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.
Common questions about Lialda
How long does it take for mesalamine to work?
When is the best time to take mesalamine?
Can I stop taking mesalamine?
Why is mesalamine so expensive?
What is the maximum dosage of mesalamine?
Is mesalamine an immunosuppressant?
How long can you take mesalamine?
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Content is provided for education and is not medical advice. See our medical disclaimer. Source page medically reviewed by Philip Thornton, DipPharm on September 24, 2026.