Patient Medication Information: uses, side effects, how to take - Nat-Omeprazole DR
What is NAT-OMEPRAZOLE DR used for?
NAT-OMEPRAZOLE DR is used to treat problems caused by too much acid in the stomach such as:
- stomach ulcers (sores).
- duodenal ulcers (sores on the first part of the intestine).
- stomach and duodenal ulcers caused by a bacterium, Helicobacter pylori.
- reflux esophagitis (tissue damage caused by stomach acid and juices moving up the food tube).
- symptoms of reflux disease (e.g. heartburn, backup of stomach contents to the throat).
- ulcers caused by nonsteroidal anti-inflammatory drugs (drugs for pain and sore joints).
- dyspepsia, a group of symptoms which may include stomach pain / discomfort, heartburn and backup of stomach contents to the throat. Dyspepsia can be caused by the other conditions in this list.
- a rare condition where the stomach produces too much acid (Zollinger-Ellison syndrome).
How does NAT-OMEPRAZOLE DR work?
NAT-OMEPRAZOLE DR is a medicine called a proton pump inhibitor (PPI). NAT-OMEPRAZOLE DR works by reducing the amount of acid made in your stomach.
What are the ingredients in NAT-OMEPRAZOLE DR?
Medicinal ingredients: omeprazole magnesium
Non-medicinal ingredients (listed in alphabetical order): hydroxypropyl methylcellulose, iron oxide (red & yellow), mannitol, methacrylic acid copolymer, microcrystalline cellulose, polyethylene glycol, sodium starch glycolate, sodium stearyl fumarate, talc and titanium dioxide.
The imprinting ink consists of ammonium hydroxide, iron oxide black, isopropyl alcohol, N-butyl alcohol, propylene glycol and shellac.
NAT-OMEPRAZOLE DR comes in the following dosage forms:
Tablets of omeprazole 20 mg.
Do not use NAT-OMEPRAZOLE DR if:
- you are allergic to omeprazole, substituted benzimidazoles or any of the other ingredients in NAT-OMEPRAZOLE DR (see “What are the ingredients in NAT-OMEPRAZOLE DR?”).
- you are taking rilpivirine.
To help avoid side effects and ensure proper use, talk to your healthcare professional before you take NAT-OMEPRAZOLE DR. Talk about any health conditions or problems you may have, including if you:
- have had any health problems in the past.
- have severe liver problems now or have had in the past.
are pregnant or plan to become pregnant.
- are breastfeeding or planning to breastfeed, as omeprazole is excreted in breast milk.
- take any other medications, including ones you can buy without a prescription.
- are due to have a specific blood test (Chromogranin A).
Other warnings you should know about:
NAT-OMEPRAZOLE DR is not recommended for use in patients under 18 years of age.
This medicine should be used at the lowest dose and for the shortest time suitable for your condition. Talk to your doctor if you have any concerns about your treatment.
Treatment in combination with antibiotics: if you experience symptoms such as severe (bloody or repeated watery) diarrhea, with or without fever, abdominal pain or tenderness, you may have bowel inflammation caused by a bacterial infection (Clostridium difficile). If this happens, stop taking the drug combination and call your healthcare professional immediately.
Tell your doctor or pharmacist about symptoms that may be a sign of a more serious problem in your stomach or intestine such as:
- trouble swallowing.
- unplanned weight loss.
- vomiting blood or food.
- black (blood-stained) stools.
Long-term use of PPIs may interfere with the absorption of Vitamin B12 from the diet. This may cause a shortage of Vitamin B12 in your body. Talk to your doctor about this risk.
Long-term use of PPIs may lead to low blood magnesium in some people. When blood magnesium is lower than normal, it may also lead to low blood calcium and low blood potassium.
Using PPIs for a long time (every day for a year or longer) may increase risks of broken bones of the hip, wrist or spine. Talk to your doctor about this risk.
Using NAT-OMEPRAZOLE DR for a long period of time may cause a growth in your stomach (polyp), especially after one year.
Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements or alternative medicines.
The following may interact with NAT-OMEPRAZOLE DR:
Serious Drug Interactions
- Do not take NAT-OMEPRAZOLE DR if you are taking rilpivirine (a drug used for HIV).
- medication for HIV: NAT-OMEPRAZOLE DR may decrease the effectiveness of some drugs used for HIV treatment; atazanavir, nelfinavir and saquinavir should not be used with NAT-OMEPRAZOLE DR.
- a high-dose of methotrexate (a drug used in high doses to treat cancer). NAT-OMEPRAZOLE DR may need to be temporarily withdrawn.
- clopidogrel, which is used for the prevention of blood clots. NAT-OMEPRAZOLE DR may interact with this drug, therefore, use with clopidogrel should be avoided.
drug effects may be influenced if NAT-OMEPRAZOLE DR are taken at the same time as some drugs used to prevent fungal infections (itraconazole, ketoconazole, voriconazole), anxiety (diazepam), epilepsy (phenytoin), blood clotting (warfarin or other vitamin K blockers), transplant rejection (tacrolimus), poor circulation in the legs (cilostazol)*, heart problems (digoxin), treatment for tuberculosis (rifampin), St John’s Wort (Hypericum perforatum) or a certain type of anticancer drug (erlotinib or any other anticancer drug from the same class).
* not marketed in Canada
How to take NAT-OMEPRAZOLE DR:
Follow your doctor’s directions carefully. They may be different from the information contained in this leaflet.
- Take all doses of NAT-OMEPRAZOLE DR that your doctor prescribes, even when you feel well. Doses every day are needed to help damaged areas heal.
- If you take NAT-OMEPRAZOLE DR with antibiotic drugs, it is important that you take all medications at the right time of day for the whole treatment period. Studies have shown that patients who take their medications as prescribed have better ulcer healing rates and greater success getting rid of their H. pylori infection.
- Take NAT-OMEPRAZOLE DR until your doctor tells you to stop. Even if you start to feel better in a few days, your symptoms may return if NAT-OMEPRAZOLE DR is stopped too soon. NAT-OMEPRAZOLE DR needs to be taken for the full treatment to help correct acid problems.
NAT-OMEPRAZOLE DR may be taken with food or on an empty stomach.
- Do not chew or crush your NAT-OMEPRAZOLE DR. Swallow the NAT-OMEPRAZOLE DR whole with half a glass of water.
Usual dose:
Your doctor may tell you to take NAT-OMEPRAZOLE DR:
- 10*-40 mg once a day for 2-8 weeks to heal damaged areas.
- 10*-40 mg to control symptoms of reflux disease or to stop reflux esophagitis from coming back.
- 20 mg to stop ulcers from returning while you take your medicine for pain and joint problems.
- 60 mg once a day to treat Zollinger-Ellison syndrome
In combination with antibiotic drugs for one week to treat ulcers caused by Helicobacter pylori.
- as Omeprazole, Amoxicillin and Clarithromycin Triple Therapy: The recommended dose for eradication of H. pylori is NAT-OMEPRAZOLE DR 20 mg, amoxicillin 1,000 mg and clarithromycin 500 mg, all twice daily for seven days.
or as Omeprazole, Metronidazole and Clarithromycin Triple Therapy: The recommended dose for eradication of H. pylori is NAT-OMEPRAZOLE DR 20 mg, metronidazole 500 mg and
- If your ulcer is bothering you, your doctor may recommend further treatment with NAT-OMEPRAZOLE DR to make sure that your ulcer is healed.
*NAT-OMEPRAZOLE DR is NOT available in 10 mg strength
Overdose:
Missed Dose:
If you miss a dose of NAT-OMEPRAZOLE DR and remember within 12 hours, take it as soon as possible. Then go back to your regular schedule. However, if more than 12 hours have passed when you remember, do not take the missed tablet. Do not double the dose. Just take your next dose on time.
What are possible side effects from using NAT-OMEPRAZOLE DR?
Like all medicines, NAT-OMEPRAZOLE DR may cause side effects in some people. Side effects are usually mild and go away a short time after starting NAT-OMEPRAZOLE DR.
These are not all the possible side effects you may have when taking NAT-OMEPRAZOLE DR. If you experience any side effects not listed here, tell your healthcare professional.
Tell your doctor right away if you have any of these symptoms:
- New or worsening joint pain.
- Rash on your cheeks or arms that gets worse in the sun. Common side effects that may occur (≥ 1 in 100 patients):
- Headache.
- Diarrhea.
- Constipation.
- Abdominal pain.
- Nausea/ vomiting.
- Excess gas in stomach (flatulence).
Uncommon side effects that may occur (≥ 1 in 1,000 patients, but less than 1 in 100 patients):
- Dizziness.
- Feeling like you or your surroundings are moving (vertigo).
- Difficulty sleeping.
- Feeling sleepy.
- Sensation of burning / prickling / numbness.
Rare side effects that may occur (less than 1 in 1,000 patients):
- Dry mouth.
If you think you, or a person you are caring for, have taken too much NAT-OMEPRAZOLE DR, contact a healthcare professional, hospital emergency department, or regional poison control centre immediately, even if there are no symptoms.
- Hair loss.
- Increased sweating.
- Taste disorders.
Stopping your PPI therapy after taking it for a long time may cause your symptoms to get worse and your stomach may increase acid production. Carefully follow your doctor’s instructions when stopping NAT-OMEPRAZOLE DR.
| 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 severe | In all cases | ||
| UNCOMMON | |||
| Skin reactions (such as skin rash, dermatitis, itchy skin and / or hives) | X | ||
| RARE | |||
| Inflammation in the mouth | X | ||
| Gastrointestinal fungal infection | X | ||
| Inflammation of the kidney | X | ||
| Liver problems, i.e., inflammation of the liver with or without jaundice, impaired liver function | X | ||
| Blood disorders (reduced number of cells in the blood, low blood sodium) | X | ||
| Sore joints and muscles | X | ||
| Muscular weakness | X | ||
| Development of breasts in males | X | ||
| Sensitivity to sunlight | X | ||
| Severe skin reactions | X | ||
| Hypersensitive (allergic) reactions (such as swelling of tissues, fever, discomfort / tightness in chest and anaphylactic shock) | X | ||
| Blurred vision | X | ||
| If you already have severe liver disease, you may experience disorientation / aggression / confusion / decreased consciousness | X | ||
| If you are very ill, you may feel confused, nervous, depressed or hallucinate | X | ||
| VERY RARE | |||
| 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 severe | In all cases | ||
Low blood magnesiumθ (which may result in low blood calcium and / or low blood potassium) | X | ||
| UNCOMMON | |||
Microscopic colitis (inflammation of the gut)
The symptoms of microscopic colitis can come and go frequently. If you have watery diarrhea that lasts more than a few days, contact your doctor. | X | ||
| Acute generalized exanthematous pustulosis (AGEP) (severe skin rash): small bumps surrounded by red skin, itching, fever, skin pain | X | ||
| Drug reaction with eosinophilia and systemic symptoms (DRESS) (serious skin reaction that may affect more than one or more organs): fever, severe rash, swollen lymph glands, flu-like feeling, yellow skin or eyes, shortness of breath, dry cough, chest pain or discomfort, feel thirsty, urinate less often | X | ||
θ These would only be seen if a blood test was taken.
If you have a troublesome symptom or side effect that is not listed here or becomes bad enough to interfere with your daily activities, tell your healthcare professional.
Reporting Side Effects
You can report any suspected side effects associated with the use of health products to Health Canada by:
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:
Keep all NAT-OMEPRAZOLE DR in the original container until it is time for a dose. If you do not, moisture from the air may damage the NAT-OMEPRAZOLE DR.
Store at room temperature (15-30 °C). Do not keep NAT-OMEPRAZOLE DR in the bathroom medicine cabinet or other warm, moist places.
Do not use NAT-OMEPRAZOLE DR after the expiry date marked on the pack.
Keep out of reach and sight of children.
If you want more information about NAT-OMEPRAZOLE DR:
- 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; the manufacturer’s website (www.natcopharma.ca), or by calling 1-800-296-9329.
Natco Pharma (Canada) Inc., Mississauga, Ontario, L5N 1P7, Canada