Canada Drug Pharmacy > Asacol (Mesalamine)

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Asacol (Mesalamine) can be used to treat forms of inflammatory bowel diseases and reduce symptoms like diarrhea, rectal bleeding, and stomach pain. This medication can also be used to treat symptoms from ulcerative colitis and Crohn's disease. Asacol, generically known as (Mesalamine) is a 5-aminosalicylic Acid Enteric Coated Tablets in 400mg.

This medication is taken orally 3 times a day as prescribed by your doctor for a duration of roughly 6 months. Taking the tablet at the same time each helps build a routine, and regular use of this medication is advised to gain the maximum effect.

For missed doses take Asacol as soon as you remember. If the missed dose is closer to your next scheduled dose, skip it to avoid double dosing and continue your regular schedule.

Before knowing if Asacol (Mesalamine) is right for you consult your doctor for any known allergies and prior medical conditions like kidney, liver or stomach diseases. Asacol (Mesalamine) can induce allergies to aminosalicylates, salicylates (aspirin), or sulfasalazine, therefore, consulting with your doctor will help determine is this medication is safe to use.


Before starting treatment with Asacol check to make sure you can not using any of the following medications that have known interactions with Asacol:


antacids (e.g., aluminum hydroxide, calcium carbonate, sodium bicarbonate)




H2 antagonists (e.g., cimetidine, famotidine, ranitidine)


low molecular weight heparins (e.g., dalteparin, enoxaparin, tinzaparin)


nonsteroidal anti-inflammatory drugs (NSAID's) and proton pump inhibitors



sulfonylureas (e.g., glyburide, gliclazide)


varicella (chicken pox) vaccine


Some common side effects are:

mild nausea


stomach cramps




sore throat

flu-like symptoms




tired feeling

skin rash


More serious side effect can include:

severe stomach pain




bloody diarrhea


If any serious side effects arise that complicate the treatment, please contact your doctor and seek further immediate help. If some common side effects become severe, working closely with your doctor or pharmacist can help you manage these side effects.

Q: Can this medication be used during pregnancy or breast feeding?

A: This medication can pass into the breast milk and effect the child being nursed. There could also be a risk using this medication during pregnancy, and it best to consult with your doctor in both cases before using Asacol.


Q: I read that this medication is taken rectally, is this true?

A: Yes, in some cases this medication can be taken rectally, however, it is most commonly administered orally with or without food. Your doctor or pharmacist will direct you on the best way to administer this medication.


Q: I know someone who has similar symptoms as me, can I give them my medication?

A: No, it is highly advised to never share your prescribed medication with anyone, even if you have left overs. The medication has the potential to cause harm if taken without a proper diagnosis. If you have leftover medication, seek out a local pharmacist to see if there are take back programs or specific instructions to dispose of the medication. Never flush medication down the toiler, and keep away from children and pets.


Q: I found that there are 800 mg tablets, can I take that instead of taking two 400 mg?

A: Speak with your doctor about the dose strength and how it relates to the planed treatment. If your doctor has prescribed you 400 mg tablets, follow the instructions of your doctor explicitly to ensure a successful treatment. Do not attempt to change the dose yourself, and work closely with your doctor or pharmacist if challenges arise during treatment.

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