Omeprazole Magnesium
Also sold as omeprazole
From 1 official FDA drug label · RxNorm 198051
What it is used for
These are the uses the FDA has approved for this label. Using it for anything else is “off-label”: ask your prescriber why.
Use • treats frequent heartburn (occurs 2 or more days a week) • not intended for immediate relief of heartburn; this drug may take 1 to 4 days for full effect
How to take it
Directions • for adults 18 years of age and older • this product is to be used once a day (every 24 hours), every day for 14 days • it may take 1 to 4 days for full effect; some people get complete relief of symptoms within 24 hours 14-Day Course of Treatment • swallow 1 capsule with a glass of water before eating in the morning • take every day for 14 days • do not take more than 1 capsule a day • do not use for more than 14 days unless directed by your doctor • swallow whole. Do not chew or crush capsules. Repeated 14-Day Courses (if needed) • you may repeat a 14-day course every 4 months • do not take for more than 14 days or more often than every 4 months unless directed by a doctor • children under 18 years of age: ask a doctor. Heartburn in children may sometimes be caused by a serious condition.
Do not take it if
Do not use if you have: • trouble or pain swallowing food, vomiting with blood, or bloody or black stools • heartburn with lightheadedness, sweating or dizziness • chest pain or shoulder pain with shortness of breath; sweating; pain spreading to arms, neck or shoulders; or lightheadedness • frequent chest pain These may be signs of a serious condition. See your doctor.
Ask a doctor or pharmacist before using it if
Ask a doctor before use if you have: • had heartburn over 3 months. This may be a sign of a more serious condition. • frequent wheezing, particularly with heartburn • unexplained weight loss • nausea or vomiting • stomach pain
Serious warnings and precautions
Warnings Allergy alert: • do not use if you are allergic to omeprazole. • Omeprazole may cause severe skin reactions. Symptoms may include: • skin reddening • blisters • rash If an allergic reaction occurs, stop use and seek medical help right away. Do not use if you have: • trouble or pain swallowing food, vomiting with blood, or bloody or black stools • heartburn with lightheadedness, sweating or dizziness • chest pain or shoulder pain with shortness of breath; sweating; pain spreading to arms, neck or shoulders; or lightheadedness • frequent chest pain These may be signs of a serious condition. See your doctor. Ask a doctor before use if you have: • had heartburn over 3 months. This may be a sign of a more serious condition. • frequent wheezing, particularly with heartburn • unexplained weight loss • nausea or vomiting • stomach pain Ask a doctor or pharmacist before use if you are taking a prescription drug. Acid reducers may interact with certain prescription drugs. Stop use and ask a doctor if: • your heartburn continues or worsens • you need to take this product for more than 14 days • you need to take more than 1 course of treatment every 4 months • you get diarrhea • you develop a rash or joint pain If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away (1-800-222-1222).
Stop using it and ask a doctor if
Stop use and ask a doctor if: • your heartburn continues or worsens • you need to take this product for more than 14 days • you need to take more than 1 course of treatment every 4 months • you get diarrhea • you develop a rash or joint pain
If you are pregnant or breastfeeding
If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away (1-800-222-1222).
Forms and strengths available
From RxNorm. Which forms and strengths are actually stocked varies by pharmacy and country.
Reactions people have reported
These are counts from 69 voluntary reports to the FDA. They show what has been reported — they are not how common a side effect is, and they do not prove the medicine caused it.
Recalls
Research & studies
Recent higher-quality studies about Omeprazole Magnesium, from PubMed. We link to the source — titles only. This is not medical advice.
Similar medicines
Omeprazole Magnesium belongs to the Proton pump inhibitors class. Other medicines in it:
Questions to ask your doctor or pharmacist
- Is this the right medicine for my condition, and how long should I take it?
- What side effects should I watch for, and which ones need urgent attention?
- Does this interact with my other medicines, supplements, or alcohol?
- What should I do if I miss a dose or take too much?
Why you can trust this
Everything above comes from official FDA drug labels (openFDA), not written by us. Here are the exact labels used.
- FDA labelMeijer, Inc.· version 2· published Mar 29, 2024· retrieved Oct 19, 2026· View this label on DailyMed