Omeprazole (Prilosec)
$0.49
Prilosec contains Omeprazole and reduces stomach acid to relieve heartburn, reflux and stomach ulcers.
Drug Information
20 reviews for Omeprazole (Prilosec)
Prilosec contains Omeprazole.
Omeprazole is a proton pump inhibitor (PPI). It lowers the amount of acid your stomach makes. It is one of the most widely used medicines for heartburn, acid reflux and stomach ulcers.
What is it used for?
- Heartburn and acid reflux (GERD)
- Stomach and duodenal ulcers
- Clearing H. pylori stomach infection, together with antibiotics
- Protecting the stomach from anti-inflammatory painkillers
- Zollinger-Ellison syndrome (too much acid)
How does it work?
Cells in the stomach lining use tiny "proton pumps" to make acid. Omeprazole switches off these pumps, so much less acid is made.
This information is written in simple words to help you understand this product. It does not replace advice from your doctor or pharmacist.
Read these points before you start. If any of them apply to you, talk to your doctor or pharmacist first.
- See a doctor before using it if you have trouble swallowing, unexplained weight loss, vomit blood, black stools, or are over 55 with new or changed indigestion. These can be signs of something more serious.
- Long-term use can lower magnesium and vitamin B12 levels and may slightly raise the risk of bone fractures. Your doctor will review whether you still need it.
- It can affect how some medicines work, such as clopidogrel (especially with omeprazole and esomeprazole), methotrexate, some HIV medicines and some antifungals.
- Tell your doctor if you have liver problems or are due to have a stomach test (endoscopy or breath test).
- Tell your doctor if you are pregnant or breastfeeding.
- Tell your doctor or pharmacist about every other medicine, vitamin or herbal product you use.
- Keep this product out of the reach and sight of children.
Like all medicines, Prilosec can cause side effects, but not everybody gets them.
Common side effects
- Headache
- Diarrhoea or constipation
- Stomach pain or wind
- Feeling sick
These are usually mild and often get better as your body gets used to it. Tell your doctor if they bother you or do not go away.
Stop using it and get medical help straight away if you notice:
- Severe or long-lasting diarrhoea, especially if watery or bloody
- Muscle cramps, shaking, an uneven heartbeat or fits (possible low magnesium, with long use)
- A rash on sun-exposed skin with joint pain (a rare lupus-like reaction)
- Signs of an allergic reaction, such as swelling or trouble breathing
This is not a complete list. If you notice anything unusual, ask your doctor or pharmacist.
- Take it once a day, before breakfast (30 to 60 minutes before eating).
- Swallow the capsule whole with water. Do not crush or chew it. If you cannot swallow it, open it and mix the pellets with a spoonful of yoghurt or apple juice.
- A common adult dose is 20 mg once a day. For some conditions, 40 mg a day or twice a day.
If you miss a dose: Take it as soon as you remember, unless it is nearly time for your next dose. Never take two doses at once.
If you use too much: Contact your doctor, a poison control centre or your local emergency number straight away, even if you feel fine. Take the pack with you.
How to store it: Keep it in its original pack at room temperature (below 25°C / 77°F), away from heat, damp and direct sunlight. Do not use it after the expiry date.
- QHow long does Prilosec take to work?
- A
It often starts to ease heartburn within 1 to 3 days, but it can take up to 4 weeks for the full effect.
- QHow long can I take Prilosec for?
- A
Many people only need a few weeks. Some need it long-term. Your doctor should review it regularly to use the lowest dose that works.
- QWhat else can help with heartburn?
- A
Eating smaller meals, not eating 3 hours before bed, raising the head of your bed, losing extra weight, and cutting down on alcohol, coffee, fatty and spicy food can all help.

Anthony Singh –
My Omeprazole order went through without a hitch. I could follow the shipment and it arrived as scheduled. Another good thing: plain, tidy packaging and everything inside was in order.
Amelie Choi –
I got my Prilosec here and the experience was easy. Placing the order took only a few minutes. The item looked exactly like the listing. Five stars from me.
Elise Nelson –
Tried this site for the first time and had a good experience. Everything was in order when I opened the box. Good communication, I always knew what was happening with my order. Pricing was reasonable and there were no hidden charges. No problems at all, so I am pleased.
Neha Saleh –
The delivery took about as long as I was told. Glad I went with this site for Omeprazole. Browsing the site was pleasant and the search worked well.
Yasin Taylor –
I used this site for my latest order and had no problems. I compared a few sites and this one had the better price. My Prilosec came well wrapped and in perfect condition. Everything went well, so I will be back.
Tao Schmidt –
The wait for delivery was short and painless. The Prilosec was priced fairly compared to other sites. Highly satisfied with the service.
Andre Romano –
Ordered Omeprazole a few days ago and wanted to leave a quick review. I checked everything against my order and it was all correct. I had no trouble at checkout, which is not always the case on other sites. Very satisfied with how it all went.
Louis Bianchi –
Writing this after my latest order from the site. The expiry date was fine and everything looked as it should. I was happy with how carefully it was packed. Great experience, I have already bookmarked the site.
Javier Robinson –
My experience with this order was good. It was packed with care, which I really noticed. The quality looked good to me.
Farah Ricci –
Reasonably priced and the discount at checkout was a nice touch. Besides that, whenever I needed help, someone got back to me promptly. I would order here again.
Hannah Medina –
The site is clean and easy to move around. The courier delivered it safely and on schedule. The team kept me updated on the status of my Omeprazole order.
Nicholas Park –
I did not have to search long to find Omeprazole here. It was what I expected when I opened it. Everything inside was snug and protected. The confirmation emails were clear and arrived quickly.
Ana Mendoza –
I found Omeprazole on the site quickly and checkout was simple. The quantity was right and everything was accounted for. A good experience from start to finish.
Farah Cooper –
I have ordered Omeprazole here before and this time was just as smooth. The right item came, and the label matched my order. Adding it to the cart and paying was quick. Another good thing: the support staff were quick to respond and easy to deal with. Thanks for the easy experience!
Shreya Baker –
Here is my honest feedback on my order. The wrapping was solid, nothing shifted around in transit. I got the correct item the first time, with no mix-ups. Good service, will reorder when I need to.
Felix Parker –
Quick review of my recent order. It came in a reasonable amount of time. What arrived was just as listed on the site. I got a helpful reply when I asked about my order. Happy with how my Prilosec order turned out.
Andres Meyer –
First time ordering here and it was a pleasant surprise. It was cheaper than my usual place, and the service was just as good.
Diya Chopra –
I had a quick question and the support team replied fast. I did not have to hunt around, the item was listed right where I expected. Good place to order Omeprazole online.
George Mbeki –
Good value for the money. Nothing negative to say, it was a good one. No complaints about the product.
Sana Ward –
Placed an order for Omeprazole and it was handled well. Packaging was clean and professional. And everything on the product page was clear, so I knew what I was getting. Their staff was patient with my questions. Really happy with this order.