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Formulation : Prolonged Release Tablet
Drug Name Dosage Quantity Price Buy Now
Pentasa 500mg 100 $65.80 Add To Cart
Pentasa 500mg 200 $119.00 Add To Cart
Pentasa 500mg 300 $172.00 Add To Cart
Dosage: 500mg
Quantity: 100
Price: $65.80
Dosage: 500mg
Quantity: 200
Price: $119.00
Dosage: 500mg
Quantity: 300
Price: $172.00

Pentasa uses 

Pentasa is used to treat a certain bowel disease called ulcerative colitis and helps reduce the symptoms of ulcerative colitis, which are characterized as rectal bleeding, diarrhea, or stomach pain.  

This medication belongs to a class of drugs known as aminosalicylates. This works by reducing the swelling in your colon. Pentasa Crohn’s disease is not an effective way of remission for active Crohn’s disease. 

How to take Pentasa 

Pentasa is typically taken orally as instructed by your doctor. Usually, you will be taking this medication four times a day every day with meals. 

Do not chew, crush or break this drug. If you crush, break or chew the medication, it might not be adequately released into your colon. Swallow it whole immediately without chewing.   


The usual dosage for ulcerative colitis is 500 mg extended-release tablet taken by mouth four times a day. The duration of therapy will be up to eight weeks. Keep in mind that this is only the usual dose, you will have to speak with your doctor before taking this medication as the dosage will depend on your response to treatment and medical condition. If you want to get the best benefit out of this medication, take it regularly at the same time every day. 

Pentasa Side Effects 

While on this medication, you may experience headaches, diarrhea, vomiting, or nausea. If you experience any of these or if these worsen, inform your doctor right away. This medication may rarely worsen ulcerative colitis. If your symptoms become any worse, report to your doctor immediately, such as cramping, abdominal pain, or diarrhea. 

Serious Side Effects 

If you have any of these serious side effects, immediately inform your doctor, such as: signs of kidney issues, changes in your amount of urine, dark urine, blood in urine, vomiting, persistent nausea, yellowing of skin and eyes, extreme abdominal and stomach pain or shortness of breath.  

Allergic Reaction  

Seek medical attention right away if you observe any of the symptoms of an allergic reaction, such as swollen lymph nodes, fever or swelling, itching, rash on the tongue, face, throat as well as difficulties maintaining normal breathing and serious dizziness. 


If you are allergic to Pentasa or any aminosalicylates, such as olsalazine, balsalazide, or salicylates such as salsalate and aspirin, or sulfasalazine. Inform your doctor that Pentasa contains inactive ingredients that cause allergic reactions. 

Before taking this medication, inform your doctor of any medical history of liver disease, kidney disease, or stomach blockage such as pyloric stenosis.  

Pentasa may cause you to be more sensitive to sunlight, especially if you suffer from skin problems characterized as eczema or atopic dermatitis. Avoid tanning booths and limit the time you spend under direct sunlight. Or use sunscreens and protective clothing when going outdoors. Consult your doctor immediately if you get blisters, sunburn, or redness.   

Pentasa is very similar to aspirin. Teenagers or children below 18 years old should not be using aspirin or aspirin-related drugs such as: salicylates if they suffer from flu or chickenpox or any undiagnosed sickness, or have been vaccinated recently. In these cases, using aspirin will only increase your chances of Reye’s syndrome, a very rare and serious illness.  

During your pregnancy, Pentasa is not recommended for use unless necessary. This medication passes through breastmilk, which can cause undesirable effects on the nursing baby. Speak with your doctor about the risks and benefits, and consult your doctor before deciding to breastfeed. 

Frequently Asked Questions 

How much does Pentasa cost? 

The cost of Pentasa will vary depending on the pharmacy you go to. Check our prices above, and you may use online tools that will help you compare prices from different stores. You may check the pricing of this product by clicking here. 

Pentasa or Lialda: Which is more effective? 

Pentasa and Lialda are mostly the same. The only difference is the dosage of Pentasa and how quickly it is released. Lialda has more mesalamine per pill, releasing it at a slower pace.

Pentasa vs Asacol – what’s the difference? 

Pentasa is geared towards treating Crohn’s disease because it releases the drug in the ileum. Asacol will tend to be released in your colon. 

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Quantities Available:

100, 200, 300


Prolonged Release Tablet

The information above is provided by third parties to for Pentasa (Mesalamine). This information is for general purposes only and is not intended to replace a physician's advice. Always consult with your doctor or a qualified health care professional if you need advice on any medical concerns.