What Naprelan is used for and how to use it
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Naprelan - Consumer Medicine Information

Manufacture: Sunovion Pharmaceuticals Inc.
Country: Canada
Condition: Osteoarthritis, Rheumatoid Arthritis
Class: Nonsteroidal anti-inflammatory agents
Form: Tablets
Ingredients: naproxen sodium, ammonio methacrylate copolymer Type A, ammonio methacrylate copolymer Type B, citric acid, crospovidone, magnesium stearate, methacrylic acid copolymer Type A, microcrystalline cellulose, povidone, and talc.

(naproxen sodium)

Read this information each time you refill your prescription in case new information has been added.

This leaflet is a summary designed specifically for you to read. It will NOT tell you everything about NAPRELAN.See your health care provider and pharmacist regularly and ask them questions about your health and any medications you take.

About this Medication

What the medication is used for

Your health care provider has prescribed NAPRELAN for you to help in relieving signs and symptoms of rheumatoid arthritis and osteoarthritis.

What it does

NAPRELAN (naproxen sodium), as a nonsteroidal antiinflammatory drug (NSAID), can reduce the chemicals produced by your body which cause pain and swelling.

NAPRELAN, as a nonsteroidal anti-inflammatory drug (NSAID), does NOT cure your illness or prevent it from getting worse. NAPRELAN only can relieve pain and reduce swelling as long as you continue to take it.

When it should not be used

DO NOT TAKE NAPRELAN if you have any of the following medical conditions

  • Heart bypass surgery (planning to have or recently had)
  • Severe, uncontrolled heart failure
  • Past or recent history of bleeding in the brain or other bleeding disorders
  • Current pregnancy (after 28 weeks of pregnancy)
  • Currently breastfeeding (or planning to breastfeed)
  • Allergy to ASA (Acetylsalicylic Acid) or other NSAIDs (Nonsteroidal Anti-Inflammatory Drugs)
  • Ulcer (active)
  • Bleeding from the stomach or gut (active)
  • Inflammatory bowel disease (Crohn’s Disease or Ulcerative Colitis)
  • Liver disease (active or severe)
  • Kidney disease (severe or worsening)
  • High potassium in the blood

Patients who took a drug in the same class as NAPRELAN after a type of heart surgery (coronary artery bypass grafting (CABG)) were more likely to have heart attacks, strokes, blood clots in the leg(s) or lung(s), and infections or other complications than those who did NOT take that drug.

NAPRELAN should NOT be used in patients under 18 years of age since the safety and effectiveness have NOT been established.

What the medicinal ingredient is

naproxen sodium

What the nonmedicinal ingredients are

Each NAPRELAN tablet contains the following inactive ingredients : ammonio methacrylate copolymer Type A, ammonio methacrylate copolymer Type B, citric acid, crospovidone, magnesium stearate, methacrylic acid copolymer Type A, microcrystalline cellulose, povidone, and talc. The tablet coating contains hydroxypropyl methylcellulose, polyethylene glycol, and titanium dioxide.

What dosage forms it comes in

Each tablet contains either 375 mg or 500 mg of naproxen as naproxen sodium in a controlled release tablet.

Warnings and Precautions

If you have, or previously had, any of the following medical conditions, see your health care provider to discuss treatment options other than NAPRELAN:
- Heart Attack or Angina
- Stroke or Mini-stroke
- Loss of Vision
- Current Pregnancy (less than 28 weeks)
- Congestive Heart Failure

Before taking this medication, tell your health care provider if you have any of the following:

  • High blood pressure
  • High cholesterol
  • Diabetes mellitus or on a low sugar diet
  • Atherosclerosis
  • Poor circulation to your extremities
  • Smoker or ex-smoker
  • Kidney disease or urine problems
  • Previous ulcer or bleeding from the stomach or gut
  • Previous bleeding in the brain
  • Bleeding problems
  • Family history of allergy to NSAIDs, such as acetylsalicylic acid (ASA), celecoxib, diclofenac, diflunisal, etodolac, fenoprofen, flurbiprofen, ibuprofen, indomethacin, ketoprofen, ketorolac, mefenamic acid, meloxicam, nabumetone, naproxen, oxaprozin, piroxicam, rofecoxib, sulindac, tenoxicam, tiaprofenic acid, tolmetin, or valdecoxib (NOT a complete list)
  • Family history of asthma, nasal polyps, long-term swelling of the sinus (chronic sinusitis) or hives
  • Any other medical problems

Also, before taking this medication, tell your health care provider if you are planning to get pregnant.

While taking this medication:

  • tell any other doctor, dentist, pharmacist or other heath care professional that you see, that you are taking this medication, especially if you are planning to have heart surgery;
  • do NOT drink alcoholic beverages while taking this medication because you would be more likely to develop stomach problems;
  • fertility may be decreased. The use of NAPRELAN is not recommended in women trying to get pregnant. In women who have difficulty conceiving, stopping NAPRELAN should be considered.

Interactions with this Medication

Talk to your health care provider and pharmacist if you are taking any other medication (prescription or nonprescription) such as any of the following (NOT a complete list):

  • Acetylsalicylic Acid (ASA) or other NSAIDs
    • e.g. ASA, celecoxib, diclofenac, ibuprofen, indomethacin, ketorolac, meloxicam, naproxen
  • Antacids
  • Antidepressants
    • Selective Serotonin Reuptake Inhibitors (SSRIs)
      • e.g. citalopram, fluoxetine, paroxetine, sertraline
  • Blood pressure medications
    • ACE (angiotensin converting enzyme) inhibitors
      • e.g. enalapril, lisinopril, perindopril, ramipril
    • ARBs (angiotensin II receptor blockers)
      • e.g. candesartan, irbesartan, losartan, valsartan
  • Blood thinners
    • e.g. warfarin, ASA, clopidogrel
  • Corticosteroids (including glucocorticoids)
    • e.g. prednisone
  • Cyclosporin
  • Digoxin
  • Diuretics
    • e.g. furosemide, hydrochlorothiazide
    • Lithium
    • Methotrexate
    • Oral contraceptives
    • Oral hypoglycemics (diabetes medications)
    • Tacrolimus
    • Phenytoin
    • Probenecid
    • Cholestyramine
    • Acetaminophen
    • Potassium Supplements
    • Alcohol

Your health care provider may prescribe low dose ASA (acetylsalicylic acid) as a blood thinner to reduce your risk of having a heart attack or stroke while you are taking NAPRELAN. Take only the amount of ASA prescribed by your health care provider. You are more likely to upset or damage your stomach if you take both NAPRELAN and ASA than if you took NAPRELAN alone.

Proper Use of this Medication

Usual dose

Dose (per
arthritis and
of age)
Two 375
mg tablets
(750 mg)
once daily
or two 500
mg tablets
(1000 mg)
once daily.
The usual
daily dose
of two 500
mg tablets
(1000 mg)
once daily
Three 500
mg tablets
mg) once
7 days*

* If you will be using NAPRELAN for more than 7 days, see your health care provider regularly to discuss whether this medicine is working for you and if it is causing you any unwanted effects.

If you are prescribed this medication for use over a long period of time, your doctor will check your health during regular visits to assess your progress and to ensure that this medicine is not causing unwanted effects.

During treatment, your doctor may decide to adjust the dosage according to your response to the medication.

Be sure to take NAPRELAN regularly as prescribed. In some types of arthritis, up to two weeks may pass before you feel the full effects of this medicine.

Take NAPRELAN only as directed by your health care provider. Do NOT take more of it, do NOT take it more often and do NOT take it for a longer period of time than your health care provider recommended. If possible, you should take the lowest dose of this medication for the shortest time period. Taking too much NAPRELAN may increase your chances of unwanted and sometimes dangerous side effects, especially if you are elderly, have other diseases or take other medications.

This medication has been prescribed specifically for you. Do NOT give it to anyone else. It may harm them, even if their symptoms seem to be similar to yours.

To lessen stomach upset, take this medicine immediately after a meal or with food or milk. Also, you should remain standing or sitting upright (i.e., do not lie down) for about 15-30 minutes after taking the medicine. This helps to prevent irritation that may lead to trouble swallowing. If stomach upset (indigestion, nausea, vomiting, stomach pain or diarrhea) occurs and continues, contact your doctor.

Do not crush or chew NAPRELAN tablets; swallow tablet whole.


If you take more than the prescribed dose, contact your health care provider immediately.

Missed Dose

If you miss a dose, take the next regularly scheduled dose and do not double dose.

Side Effects and what to do about them

NAPRELAN may cause some side effects, especially when used for a long time or in large doses. When these side effects occur, you may require medical attention. Report allsymptoms or side effects to your health care provider.

NAPRELAN may cause you to become drowsy or tired. Be careful about driving or participating in activities that require you to be alert. If you become drowsy, dizzy or light-headed after taking NAPRELAN, do NOT drive or operate machinery.

NAPRELAN may cause you to become more sensitive to sunlight. Any exposure to sunlight or sunlamps may cause sunburn, skin blisters, skin rash, redness, itching or discolouration, or vision changes. If you have a reaction from the sun, check with your health care provider.

Check with your health care provider IMMEDIATELY if you develop chills, fever, muscle aches or pains, or other flu-like symptoms, especially if they occur before or together with a skin rash. These symptoms may be the first signs of a SERIOUS ALLERGIC REACTION to this medication.

Symptom STOP taking
get emergency
medical attention
STOP taking
and talk to
physician or
Bloody or black tarry
Shortness of breath,
wheezing, any trouble
breathing or chest
Skin rash, hives,
swelling or itching
Blurred vision, or any
visual disturbance
Any change in the
amount or colour of
your urine (red or
Any pain or difficulty
experienced while
Swelling of the feet,
lower legs; weight gain
Vomiting or persistent
indigestion, nausea,
stomach pain or
Yellow discoloration of
the skin or eyes, with or
without itchy skin
Malaise, fatigue, loss of
Headaches, stiff neckX
Mental confusion,
Hearing problemsX

This is NOT a complete list of side effects. If you develop any other symptoms while taking NAPRELAN, see your health care provider.

How to Store it

NAPRELAN should be stored at room temperature (15-30°C/59-86°F) in a closed container.

Do NOT keep outdated medicine or medicine no longer needed. Any outdated or unused medicine should be returned to your pharmacist.

Keep out of reach of children.

Reporting Suspected Side Effects

You can report any suspected adverse reactions associated with the use of health products to the Canada Vigilance Program by one of the following 3 ways:

  • Report online at www.healthcanada.gc.ca/medeffect
  • Call toll-free at 1-866-234-2345
  • Complete a Canada Vigilance Reporting Form and:
    • Fax toll-free to 1-866-678-6789, or
    • Mail to: Canada Vigilance Program
      Health Canada
      Postal Locator 0701D
      Ottawa, Ontario
      K1A 0K9

    Postage paid labels, Canada Vigilance Reporting Form and the adverse reaction reporting guidelines are available on the MedEffect Canada Web site at www.healthcanada.gc.ca/medeffect.

NOTE: Should you require information related to the management of side effects, contact your health professional. The Canada Vigilance Program does not provide medical advice.

More Information

This document plus the full product monograph, prepared for health professionals can be found at:

http://www.sunovion.ca or by contacting the distributor,Sunovion Pharmaceuticals Canada Inc., at: