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IMPORTANT NOTE: A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.
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Buy Pentasa (Mesalamine) Online

Pentasa is affordable and easy to buy with Canada Drug Warehouse. You can order your prescription medications online or call us 7 days a week and get your Pentasa delivered to your door for the fraction of the cost you usually pay.

What is Pentasa?

Pentasa (Mesalamine) is a medication used to treat ulcerative colitis and Crohn disease and to prevent the symptoms from these conditions such as diarrhea, rectal bleeding and stomach pain from returning. Mesalamine works by decreasing swelling within your colon.

Always read the patient information and instructions carefully before using this medication.

  • Pentasa is taken orally and is typically taken four times a day. If you are taking the tablet form this should be taken with food. Pentasa capsules may be taken with or without food.
  • Swallow Pentasa whole. Do not crush, chew or break your medications as this may stop the medication from being properly released into the colon. If you have problems swallowing the capsules whole, you can open the capsules and sprinkle the contents onto yogurt or applesauce and then swallow this mixture immediately without chewing.
  • Your Pentasa dosage is based on your medical condition and response to treatment. Do not change your dosage or the frequency you take this medication unless advised by a doctor.
  • Pentasa is most effective when it is taken regularly. Try to take this medication at the same time each day. Tell your doctor if your condition does not improve or worsens.


Make sure to tell your doctor and pharmacist:

  • If you have any drug allergies.
  • Which other prescription and non-prescription medications you currently take.
  • Your medical history especially of kidney disease, liver disease, stomach blockage or skin problems.
  • If you are breast feeding. This medication may have undesirable effects on a nursing infant.

Also be aware that:

  • This medication should only be taken when clearly needed during pregnancy.
  • Pentasa is similar to aspirin. Children and teenagers should not take this medication if they have chickenpox, flu or any undiagnosed illness or if they have recently received a vaccine.

Mesalamine side effects

Common Pentasa side effects may include but are not limited to:

  • Nausea, stomach pain, diarrhea or constipation.
  • Sore throat, sinus pain, runny or stuffy nose.
  • Fly symptoms.
  • Headache or back pain.
  • Rashes.
  • Abnormal liver function tests.

Contact your doctor if you experience any of the following side effects of mesalamine:

  • Severe stomach pain, cramping or bloody diarrhea.
  • Fever, headache or skin rash.
  • Bloody or tarry stools, coughing up blood or vomit that looks like coffee grounds.
  • Signs of kidney problems such as painful, burning little or no urination, swelling in your feet or ankles, tiredness or shortness of breath.
  • Signs of liver problems such as loss of appetite, upper stomach pain, tiredness, easy bruising or bleeding, dark urine, clay-colored stools or jaundice.
  • Signs of an allergic reaction such as hives, difficulty breathing or a swelling of your face, lips or throat.


Q: What should I do if I miss a dose of Pentasa?

A: If you miss a dose of this medication, take it as soon as you remember. If it is almost time for your next dose, then skip your missed dose.

A valid Prescription is required to be mailed or faxed to complete this order. I acknowledge that I will need to be contacted to complete a health profile before my order is shipped.

Your Lowest Price, Guaranteed

Our goal is to bring you the most affordable medication. If you find a lower price advertised by another website or your local pharmacy, we’ll match that price or beat it by 10% of the difference.* Call us at 1-877-204-1506 and a member of our CareTeam will be happy to assist you.

Call 1-877-204-1506
* Some exceptions may apply
Some exceptions may apply. To qualify for price matching, competitors must meet our standards for patient safety. Advertised prices must be for medication of the same type, strength, quantity, and form.

Real Customers, Honest Reviews

just wanted to tell you that my wife and I are grateful for y'all. with my wife not being able to work, her meds were out of this world price wise we were struggling. then our Dr told us about y'all so we took a chance. Now she don't skip her med and we can afford them thank you very much to us you are a god sent thank you.
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I could not ask for more. The CDW is so easy to work with. People are friendly,helpful & knowledgeable. Thanks for being there for your customers. Prices are very reasonable. Mary P
Mary February 21, 2020

Real Customers, Honest Reviews

I just received my shipment today! Although it has taken longer than other options, the price value more than makes up for time. Everything that I ordered arrived in excellent shape. Definitely will re-order.
Linda December 17, 2019

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great customer service. A+++
paul December 9, 2019

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Jessica fue muy amable , muchas gracias por su paciencia
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Very smooth process.
Lawrence December 5, 2019

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Went well so far. Everyone I talked to were helpful. thanks, Jim
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Very easy to work with. Great prices.
Cathy December 2, 2019

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I am very pleased with the service and prices. I was glad they called me to remind to reorder. Thank you so much.
Mark November 23, 2019

Real Customers, Honest Reviews

Have enjoyed the prices of the products my husband and I receive from you...I do wish there was a savings on some other ones however...Our income takes a big hit on what our Doctors want us to take...Thank you for what you are able to do for us thus far though...
Sharon November 11, 2019
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