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Pentasa (5-Aminosalicylic Acid)

Also Known as Salofalk

Prescription medicineOnly Available By Prescription

Top brand choice

Strength Pack Size Qty
Pack Size
Pack Size

You'll have option to make 4 interest-free payments by credit card once your order is confirmed using

What if I find a lower price with another pharmacy?

We guarantee the lowest price on all of our prescription products. If you find your medications cheaper at any other recognized licensed mail order pharmacy, we will not only match their price, we will beat it by 25% of the difference. It is our 125% price match guarantee!

Example: If you find a product on Canada Drugs Direct for $50.00 and find the same product for $40.00 at another mail order pharmacy, we will provide you with a $12.50 discount, bringing your total to $37.50.

To get the discount please make sure to mention the price match to the customer service team when they call to collect payment for your order. Or call toll free at 1-888-904-8467 to place the order through the phone.

Terms & Conditions of Program

  • Guaranteed lowest price is only valid at the time of sale.
  • We will only match the current advertised price.
  • Products must be identical and in stock at the time of placing an order with a licensed mail order pharmacy. The must be a member of CIPA (Canadian International Pharmacy Association).
  • Products must be authentic in brand and size (same manufacturer, same country of manufacture, same pack size, same strength and same quantity).
  • Products must be new. We cannot match the price of any used, short expiry or expired product.
  • Price match can only be issued over the phone with our customer service team
What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.


Pentasa is a prescription medication for treatment of ulcerative colitis. It is an anti-inflammatory drug that works by reducing the inflammatory response occurring in the bowel for people with this condition, and for most users it reduces the pain, burning and irritation very effectively. It can be taken when flare ups occur or taken at a lower dose for ongoing maintenance of ulcerative colitis. Pentasa may be recommended as a complementary medication for people dealing with both Crohn's and Colitis.

You can buy Pentasa with a prescription and your best price on it will be when your order medication online from Canada Drugs Direct.

Fact Table




FDA approved


Low; but variable depending on formulation

Legal status

Prescription drug

Chemical Name

5-Aminosalicylic Acid

Elimination half-life

0.5-1.5 hours (parent compound), 5-10 hours (metabolites)

Dosage (Strength)

Tablets: 250 mg, 500 mg; Suppositories: 1 g; Enema: 4 g/100 mL

Pregnancy advice

Category B (No risk in non-human studies)


Pentasa, among others

Protein binding


PubChem CID






ATC code






Routes of administration

Oral, Rectal


Once you are prescribed and buy Pentasa, then it's good to know that person's Pentasa dosage will vary based on their condition and based on any existing responses to medication use and will be indicated in your prescription.

It is common for doctors to recommend a lower dose if you will be taking the medication for colitis flare ups.


The active ingredient in Pentasa is 5-Aminosalicylic Acid.


Tell your doctor if you have any history of gastric or duodenal ulcers, urinary tract obstruction, or decreased liver or kidney function before starting on Pentasa.

Do not take a double dose of this medication if you have forgotten to take it.

Store medication at room temperature and out of direct sunlight.


There is the possibility of negative drug interaction risks between Pentasa and other Rx medications, including 6-mercaptopurine / azathioprine / digoxin / furosemide / H2 antagonists like cimetidine, famotidine, and ranitidine / heparin / methotrexate / nonsteroidal anti-inflammatory drugs like naproxen and ibuprofen / proton pump inhibitors like esomeprazole, lansoprazole, omeprazole, and pantoprazole / spironolactone /sulfinpyrazone / sulfonylureas / thioguanine / varicella (chicken pox) vaccine / warfarin

Tell your doctor of all medications you are currently taking before getting a prescription and proceeding to buy Pentasa online.

Side Effects

Pentasa side effects are uncommon, but some users may experience nausea, tiredness, vomiting abdominal pain, stomach cramps, acne, back pain, blood pressure changes, diarrhea, dizziness, fatigue, hair loss, headache, gas, bowel movement urgency, or rectal irritation. If side effects are experienced, then you may want to discontinue use and speak to your doctor again regarding ulcerative colitis treatment medication alternatives.

IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

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