The simple answer is that alcohol does not have a known direct interaction with omeprazole that normally requires a dose change. The bigger issue is that alcohol can make heartburn and acid reflux symptoms worse. NHS guidance advises avoiding alcohol while taking omeprazole because it can increase stomach acid and make symptoms worse.
That is different from saying that alcohol stops omeprazole from working or changes the way the medicine needs to be dosed.
This guide explains what you should know about alcohol, other medicines that can interact with omeprazole, and how to take your medicine correctly.
Key things to know
- There is no established alcohol interaction with omeprazole that normally requires a dose adjustment
- Alcohol can make heartburn and acid reflux symptoms worse
- Omeprazole can be taken with or without food, so there is no strict 30 to 60 minute rule before a meal
- Clopidogrel is an important interaction. Omeprazole and clopidogrel are generally avoided together because omeprazole can reduce the activation of clopidogrel
- Always check the medicine leaflet and speak to a pharmacist or doctor if you take other medicines regularly
Can You Drink Alcohol While Taking Omeprazole?
There is no established direct interaction between alcohol and omeprazole that means your omeprazole dose needs to be changed.
However, alcohol can make reflux symptoms worse. NHS guidance says that alcohol can increase the amount of acid in your stomach and make symptoms worse.
So, if you notice that heartburn, acid reflux or indigestion gets worse after drinking, reducing or avoiding alcohol may help you manage those symptoms.
This is mainly about symptom control rather than a dangerous drug interaction. If you have been prescribed omeprazole for reflux or an ulcer, follow the advice given by your doctor or pharmacist.
There is also no specific waiting period that you need to follow between taking omeprazole and drinking alcohol. However, avoiding alcohol may be sensible if it regularly makes your symptoms worse.
What About Smoking?
Smoking can make acid reflux symptoms worse and is one of the lifestyle factors NHS guidance recommends addressing when managing reflux.
This is different from a direct interaction with omeprazole. Smoking does not automatically mean that your omeprazole dose needs to be changed.
If you smoke and regularly experience heartburn or reflux, speak to a healthcare professional about ways to manage your symptoms and, if you want to stop smoking, the support available to you.
The Interaction That Genuinely Matters: Clopidogrel
Omeprazole has an important interaction with clopidogrel. Clopidogrel needs to be activated by an enzyme called CYP2C19, and omeprazole can inhibit this enzyme.
NHS Specialist Pharmacy Service guidance recommends avoiding omeprazole and esomeprazole with clopidogrel because of this significant interaction. Lansoprazole, pantoprazole or rabeprazole are preferred when a PPI is needed.
If you take clopidogrel, do not stop either medicine or change your treatment yourself. Speak to your doctor or pharmacist so they can review your medicines and decide what is appropriate.
Other Medications Worth Mentioning to Your Prescriber
Omeprazole can interact with a number of medicines, so it is worth giving your doctor or pharmacist a complete list of what you take.
Some examples include:
- Warfarin and other medicines used to prevent blood clots
- Certain HIV medicines, including nelfinavir and atazanavir
- Phenytoin, used to prevent seizures
- Diazepam
- Digoxin
- St John's Wort
- Methotrexate, particularly at higher doses
The exact interaction and what to do about it depends on the medicine and your individual circumstances. NHS guidance recommends checking with a doctor or pharmacist if you take other medicines, herbal remedies, vitamins or supplements.
Do not assume that a medicine is suitable simply because it is commonly used alongside omeprazole. If you are taking regular medication, checking with a pharmacist is a simple way to make sure there are no important interactions.
Do You Need to Take Omeprazole Before Food?
No. Omeprazole does not have to be taken before food.
Current NHS guidance says that you can take omeprazole with or without food. If you take it once a day, try to take it at the same time each morning. If you take it twice a day, take it at the same time each morning and evening.
This means that a strict "30 to 60 minutes before breakfast" rule is not necessary for omeprazole.
Always follow the instructions for your particular product if they differ, especially if you are taking a specific prescription formulation.
Genuine Reflux Triggers Worth Knowing About
Alcohol is one of the things that can make reflux symptoms worse. NHS guidance also recommends paying attention to other possible triggers, including coffee, chocolate, tomatoes and fatty or spicy foods.
Not everyone reacts to the same foods or drinks. You do not necessarily need to avoid everything on a reflux trigger list.
Instead, it can be useful to notice what makes your own symptoms worse. If alcohol regularly causes heartburn, cutting down or avoiding it may help.
These foods and drinks do not necessarily stop omeprazole from working. They can simply trigger reflux symptoms while you are taking it.
How to Take Your Capsules Correctly
Swallow omeprazole capsules with water. Do not chew or crush capsules or tablets labelled as gastro resistant or enteric coated, as this can affect the way the medicine is released.
If you have difficulty swallowing capsules or tablets, speak to your pharmacist or doctor. Other formulations of omeprazole may be available, depending on your needs. NHS Specialist Pharmacy Service guidance confirms that several PPI formulations can be considered for adults with swallowing difficulties.
Missed and Extra Doses
If you miss a dose of omeprazole, take it when you remember unless it is nearly time for your next dose. If it is nearly time, skip the missed dose and take your next dose at the usual time. Do not take two doses together to make up for a missed dose.
If you accidentally take more than your prescribed or recommended dose, check the medicine leaflet and speak to a pharmacist or NHS 111 if you are concerned or feel unwell.
Pregnancy and Breastfeeding
NHS guidance says you can usually take omeprazole during pregnancy, but you should check with a doctor or pharmacist first.
You can also usually take omeprazole while breastfeeding. If you have concerns about your baby or your treatment, speak to a healthcare professional.
If you are pregnant or breastfeeding and considering an OTC medicine, check with a pharmacist before starting it.
Common Side Effects
Common side effects of omeprazole can include headache, nausea, diarrhoea, stomach pain, constipation and wind. Not everyone gets side effects, and they are often mild.
Long term PPI treatment can be associated with some additional risks. These include low magnesium levels and, in some people, vitamin B12 deficiency and an increased risk of fractures.
The risks can depend on the length of treatment, dose and individual health factors. This does not mean that everyone taking omeprazole long term will develop these problems.
If you need to take omeprazole for a long time, your doctor can review whether you still need it and whether the current dose is appropriate.
Available Treatments
| Treatment | Price |
|---|---|
| Lansoprazole 15mg Capsules | From £5.99 |
| Pantoprazole | From £5.99 |
| Famotidine Tablets | From £8.49 |
| Lansoprazole 15mg Orodispersible Tablets | From £8.49 |
| Esomeprazole | From £16.99 |
| Omeprazole 20mg | From £12.99 |
| Rabeprazole | From £19.99 |
| Losec MUPS 20mg Tablets | From £29.99 |
Omeprazole is also available over the counter for short term treatment of certain reflux symptoms. If you buy it without a prescription, do not take it for longer than 2 weeks without speaking to a doctor.
Medical Disclaimer
This page provides general information about omeprazole, alcohol and medicine interactions. It is not a substitute for personalised medical advice.
Always tell your doctor or pharmacist about the medicines, supplements and herbal products you take. If your symptoms persist, become worse or keep returning, seek medical advice rather than continuing to self treat.
