Phenergan
Promethazine
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- 25mg
- 10mg
- 56 Tablets £48.95
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24 hour shipping by secure courier.
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Product info
Phenergan is an anti-nausea medication that helps relieve nausea and vomiting.
- It contains promethazine hydrochloride which blocks histamine receptors in the brain.
- Phenergan is typically taken orally one to two hours before travel.
- 25mg
- 10mg
- 56 Tablets £48.95
- Prices include:Express shipping
24 hour shipping by secure courier.
- Consultation + Access to our clinicians
Ask our experts anything you like, any time you want.
- Total
£48.95Save £0.00 each order
What is Phenergan?
Phenergan is an anti-nausea medication that works to combat the symptoms of nausea and motion sickness. It’s often used to manage day-to-day travel sickness, and can also be taken to reduce the aftereffects of surgery, like vomiting and pain.
Nausea can have many different causes, including acid reflux, migraine, and food poisoning.[1] Helping to identify the cause can help you to know which triggers to avoid, or recognise symptoms early when they begin.
Phenergan’s active ingredient, promethazine hydrochloride, is a type of drug called a phenothiazine. It works by blocking histamine, a chemical that your body overproduces during an allergic reaction. This means that as well as being an effective treatment against nausea, Phenergan is also used for reducing allergy symptoms.
How does Phenergan work?
Phenergan works by lowering the effects of histamine, changing the way the chemicals in your brain take action. Its active ingredient, promethazine, works by dulling the sensitivity of histamine receptors in the part of your brain associated with vomiting.
The tablets block these receptors without actually stopping the release of histamine. This stops the vomiting centre from becoming activated by inflammatory stimulus, and so this can help to reduce nausea and ease motion sickness.
What doses of Phenergan are there?
Phenergan is prescribed in strengths of 10mg, 20mg and 25mg at a time. The dose you need will depend on how your nausea or motion sickness is affecting you. A clinician can advise you about how much Phenergan you need to take, as well as the maximum dose you can take each day.
In order to prevent motion sickness, it’s usually recommended you take 25mg of promethazine one to two hours before travelling. It can sometimes be taken the night before you travel.[1]
If you’re unsure which strength tablet you need to stay on top of your condition, we’re happy to answer any questions. You can log into your account and message us at any time of the day.
Treated trusted sources:
- NHS (2018). Nhs.co.uk. Feeling sick (nausea).
How we source info.
When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.
How to take Phenergan
You should take Phenergan as instructed by your clinician, and in line with your patient information leaflet (PIL).
The dose you’ll take will depend on the reason that you’re taking Phenergan (whether it’s for nausea and vomiting, allergies, or as a sedative). To take Phenergan, you must:
- take the medicine orally;
- take it for no more than seven days;
- follow your clinician for dosage guidance.
How long does it take Phenergan to work?
Phenergan is a quick and effective treatment for nausea, and your symptoms should reduce within 20 minutes of taking it.[1]
Don’t take more than the prescribed amount if your symptoms don’t feel like they’re getting better. Always remember to speak to your doctor or clinician for advice if you’re not sure about anything.
How long can I take Phenergan for?
Phenergan shouldn’t be taken for more than a period of seven days. If your symptoms haven’t improved within one week, you should speak to your clinician. They’ll advise you of what your next course of action should be.
What should I do if I make a mistake when taking Phenergan?
If you accidentally take more Phenergan than you’ve been advised to, then you should seek medical help as soon as possible. Don’t take an extra dose to make up for a forgotten dose. Instead, just take it when you remember or skip the missed dose if it’s close to the time your next one is due.
Treated trusted sources:
- NHS. “Promethazine: Drowsy (Sedating) Antihistamine That Relieves Allergy Symptoms.” Nhs.uk, 20 Sept. 2018.
How we source info.
When we present you with stats, data, opinion or a consensus, we’ll tell you where this came from. And we’ll only present data as clinically reliable if it’s come from a reputable source, such as a state or government-funded health body, a peer-reviewed medical journal, or a recognised analytics or data body. Read more in our editorial policy.
FAQ: Phenergan
Have something specific you want to know? Search our info below, or ask our experts a question if you can’t find what you’re looking for.
Is Phenergan similar to any other treatments?
Which dose of Phenergan should I use?
How effective is Phenergan?
Who is Phenergan for?
Do I need a prescription for Phenergan?
Treated trusted sources:
- Zikos, T. A., et al. (2020). Marijuana, Ondansetron, and Promethazine Are Perceived as Most Effective Treatments for Gastrointestinal Nausea. Digestive diseases and sciences, 65(11), 3280–3286.
- McParlin C, et al. (2016). Treatments for Hyperemesis Gravidarum and Nausea and Vomiting in Pregnancy: A Systematic Review. Journal of American Medical Association 2016, 316(13), 1392-1401.
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Motion sickness: Here are our other options.
Effective tablet for motion sickness. Take it before you travel and avoid nausea.
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Preventative patch for motion sickness that's effective for up to 72 hours.
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Here’s what you had to say
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Excellent Service
Excellent service. Received my medication the very next day.
Corrected a delivery problem immediately and easily
Very good always on time with a confidential assesment. I am on last course now and have had real progress. Would consult with again in future. Would reccomend.
Great service, professional staff, with the best advice
I m so nice suprise with this service, all very profesional and quick. I was trying get help from Gp about HRT but only what I get was link to NHS website ( which i alredy read it ) and trying put me on antidepressant tablets ( what make me feel worse) I m nearly a month now on hormon tablets and it's such a massive difference. Thank you so much for saving my life ❤️
good information. good quick response to a query. excellent service.
very good to deal with and very fast delivery
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Further reading
Take a look at our helpful health guides related to motion sickness.
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