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M-Doxycycline: Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx)
Strength:
100 mg

Patient Medication Information: uses, side effects, how to take - M-Doxycycline

What is M-DOXYCYCLINE used for?

  • M-DOXYCYCLINE is used to treat infections caused by germs (bacteria).
  • M-DOXYCYCLINE is NOT used to treat viral infections (e.g. the common cold).

How does M-DOXYCYCLINE work?

  • M-DOXYCYCLINE is an antibiotic. It stops the bacteria’s ability to make what it needs to grow new cells. This helps get rid of the infection.

What are the ingredients in M-DOXYCYCLINE?

Medicinal ingredients:

  • M-DOXYCYCLINE: doxycycline hyclate.

Non-medicinal ingredients:

  • M-DOXYCYCLINE: each tablet contains croscarmellose sodium, HPMC

    2910/Hypromellose, lactose monohydrate, Lake Sunset Yellow, Lake Ponceau 4R, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide. M-DOXYCYCLINE comes in the following dosage forms:

    • M-DOXYCYCLINE available as round, orange, film coated tablets of 100 mg, debossed ‘PRZ’ on one side and ‘DOXY-100’ on other side.

Do not use M-DOXYCYCLINE if you:

  • are allergic to this drug.
  • are allergic to any of the ingredients in these products. See also “What are the ingredients in M-DOXYCYCLINE” above.
  • are allergic to tetracycline drugs (a class of antibiotics).
  • have myasthenia gravis (a muscle disease).
  • are taking isotretinoin (e.g. Accutane). See the next section, “To help avoid side effects and ensure proper use”.

To help avoid side effects and ensure proper use, talk to your healthcare professional before you take M-DOXYCYCLINE. Talk about any health conditions or problems you may have, including if you:

  • are pregnant or plan to become pregnant.

  • are breastfeeding or planning to breastfeed. Some of this drug may pass to your baby.
  • M-DOXYCYCLINE are not recommended for women who are breastfeeding.
  • have trouble swallowing.
  • have health problems that affect or block the tube that carries food from your mouth to your stomach (esophagus).

M-DOXYCYCLINE should not be used in children under 8 years of age.

Tetracyclines such as M-DOXYCYCLINE may cause a serious side effect, benign intracranial hypertension (pressure around the brain) with symptoms such as headache, nausea, vomiting and vision loss. If this occurs, contact your doctor immediately. Do not use M-DOXYCYCLINE and isotretinoin together as they both can cause this effect.

Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements or alternative medicines.

Do not take M-DOXYCYCLINE with:

  • alcohol.
  • barbiturates (drugs that help you sleep).
  • phenytoin (a drug that controls epilepsy).
  • carbamazepine (a drug that controls epilepsy).
  • methoxyflurane (an anaesthetic).

Some drugs can make M-DOXYCYCLINE not work as well as it should. These include:

  • drugs to thin the blood (oral anticoagulants).
  • penicilin, a drug to treat infections.
  • drugs to treat upset stomach that contain bismuth subsalicylate.
  • drugs to treat heartburn that contain aluminum, calcium or magnesium.
  • products that contain iron.

Do not take these drugs at the same time of day as M-DOXYCYCLINE.

Birth control pills may not work if you are on them while taking M-DOXYCYCLINE. You should use other birth control while taking these products and for 7 days after stopping.

How to take M-DOXYCYCLINE:

  • Take this medicine exactly as your doctor has told you to.
  • Do not skip doses.
  • Stop taking M-DOXYCYCLINE right away if you become pregnant.
  • Tell your doctor if you become pregnant.
  • Do not use M-DOXYCYCLINE to treat any other medical problems unless your doctor tells you to.
  • This medicine has been prescribed for you only. Do not share it with others. It may harm them, even if their symptoms are the same as yours.
  • Do not stop taking this medicine until you have taken all of it, even if you feel better.
  • Stopping this medicine early may:

    • increase the risk that bacteria will become resistant to it.
    • make this product not work as well in the future.

Usual dose:

  • Take your medicine when your doctor tells you.
  • Take the amount of medicine your doctor tells you.
  • Take your medicine with or after a meal.

  • Take your medicine with a glass of water.
  • Take your medicine while standing or sitting.
  • After taking your medicine, wait at least 1 to 2 hours before lying down.

Overdose:

If you think you, or a person you are caring for, have taken too much M-DOXYCYCLINE, contact a healthcare professional, hospital emergency department, or regional poison control centre immediately, even if there are no symptoms.

Missed Dose:

  • If you forget to take M-DOXYCYCLINE take it as soon as you

    remember unless it is time to take the next dose.

  • Continue taking the rest of the doses as your doctor has told you to.
  • Do not take more than one dose at a time.

What are possible side effects from using M-DOXYCYCLINE?

These are not all the possible side effects you may feel when taking M-DOXYCYCLINE. If you experience any side effects not listed here, contact your healthcare professional. Please also see Warnings and Precautions.

If you experience symptoms such as severe diarrhea (bloody or watery) with or without fever, abdominal pain, or tenderness, you may have Clostridium difficile colitis (bowel inflammation). If this occurs, stop taking M-DOXYCYCLINE and contact your healthcare professional immediately.

Other side effects that may occur while using M-DOXYCYCLINE:

  • change in tooth colour.
  • diarrhea.
  • loss of appetite.
  • nausea.
  • stomach pain.
  • vomiting.

If these become bothersome, contact your doctor.

  • You may be sensitive to the sun when taking M-DOXYCYCLINE.
  • You could get a sunburn.
  • If you will be in direct sunlight protect your skin, use sunscreen.
  • Avoid excessive sunlight.
  • Avoid tanning beds.
  • Stop using M-DOXYCYCLINE if you become sensitive to the sun.

    Symptoms of sun sensitivity include rash, blisters or skin break outs.

Serious side effects and what to do about them
Symptom / effectTalk to your healthcare professionalStop taking drug and get immediate medical help
Only if severeIn all cases
UNKNOWN
Pain or difficulty swallowing√
Rash√
Yeast infection√

Hypersensitivity (allergic) reaction. Symptoms are:

  • difficulty breathing.
  • fast heartbeat.
  • dizziness.
  • itching.
  • rash.
  • skin blistering.
√

Autoimmune adverse drug reactions.

Symptoms are:

  • swelling of hands and feet.
  • muscle and joint pain.
  • rash.
√

Benign intracranial hypertension (high blood pressure in the brain). Symptoms are:

  • headache.
  • nausea.
  • vomiting.
  • visual disturbances (e.g. blurred vision, double vision, blank
√
Serious side effects and what to do about them
Symptom / effect

Talk to your healthcare

professional

Stop taking drug and get immediate medical help
Only if severeIn all cases
spots).

If you have a troublesome symptom or side effect that is not listed here or becomes bad enough to interfere with your daily activities, talk to your healthcare professional.

Reporting Side Effects

You can report any suspected side effects associated with the use of health products to Health Canada by:

  • Visiting the Web page on Adverse Reaction Reporting (https://www.canada.ca/en/health-canada/services/drugs-health-products/medeffect-canada/adverse-reaction-reporting.htm) for information on how to report online, by mail or by fax; or
  • Calling toll-free at 1-866-234-2345.

NOTE: Contact your health professional if you need information about how to manage your side effects. The Canada Vigilance Program does not provide medical advice.

Storage:

Store at room temperature 15°C to 30°C. Protect from light. Keep in a tightly closed container.

Keep out of reach and sight of children.

If you want more information about M-DOXYCYCLINE:

  • Talk to your healthcare professional.
  • Find the full Product Monograph that is prepared for healthcare professionals and includes this Patient Medication Information by visiting the Health Canada website (https://www.canada.ca/en/health-canada/services/drugs-health-products/drug-products/drug-product-database.html); or by contacting the manufacturer at medinfo@mantrapharma.ca or at 1-833-248-7326.

Mantra Pharma Inc. 1000 rue du Lux, Suite 201

Brossard, Quebec

J4Y 0E3

Last Revised: NOV 27, 2023

About this document

Source: Health Canada – Drug Product Database (DPD) and product monographs · DIN (Drug Identification Number): 02543478

Revision date stated in the text: November 27, 2023

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for M-Doxycycline

Rx or OTC
Prescription (Rx)?
DIN 02543478
Schedule(s) PRESCRIPTION
Active ingredient(s) Doxycycline (doxycycline hyclate) 100 MG
Dosage form(s) Tablet
Route(s) of administration Oral
Drug class (WHO ATC)
  1. J Antiinfectives for systemic use
    1. J01 Antibacterials for systemic use
      1. J01A Tetracycline antibiotics
        1. J01AA Tetracyclines
          1. J01AA02 Doxycycline
Company MANTRA PHARMA INC
Current status Marketed
Current status date June 5, 2024

Source: Health Canada – Drug Product Database (DPD) and product monographs, data as of November 1, 2026. Data from the Health Canada Drug Product Database, as published there. Not a substitute for the advice of a doctor or pharmacist.