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What is Promethazine?
Promethazine is a drug used for the treatment of travel sickness, insomnia and symptoms of allergic reactions, e.g., skin rashes, hives, watery eyes, sneezing, running nose, itching etc.
How does it work?
Promethazine is a member of the phenothiazine class of drugs. It exerts its effects by blocking the histamine receptors. The histamine is produced in your body in response to allergic reactions and causes most of the symptoms associated with allergic reactions. It also blocks the receptors involved in sleep, tension and anxiety.
Is Promethazine suitable for me?
It is suitable for adults and children above 6 years old with signs of allergic reactions, travel sickness and insomnia. However, for younger children, it should only be used with a prescription from a doctor. It can cause serious and fatal reactions for 2 years or fewer babies. Strictly follow the instructions of the doctor for its use.
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All medications can cause potential side effects, below we have listed some potential side effects, however, these do not always occur. The common side effects are;
In case of allergic reactions, stop taking it and immediately seek medical assistance.
Disclaimer: This website does not constitute as medical advice, you should also consult with a doctor before taking medication. If you experience any major reactions to any medication you are taking, you must seek immediate medical attention.
Commonly used dosage guidelines for Promethazine.
The dosage of oral Promethazine depends upon the purpose of its use.
For allergic reactions
- For adults, the dose is 12.5mg before meals or 25mg at bedtime, as recommended by the doctor.
- The recommended dose for children (2 years and above) is half of the adults. However, the doctor will decide according to health and weight.
- For infants, use only on the recommendation of a doctor.
As a preventive treatment for travel sickness
- For adults, the dose is 25mg twice daily. Take the initial dose a few hours before travelling and repeat it 8-12 hours later. You can repeat it if needed on the next day of the journey.
- The dose for children is 12-25mg, with the same usage guidelines as for adults.
- For infants, the dose should be decided by the doctor.
For pain killing and sedation
- The dose is 25-50mg, and the doctor should recommend the pattern.
Disclaimer: This website does not provide medical advice. No information listed on this website is intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment before undergoing a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.
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All orders placed before 14:00 on weekdays will be delivered the next working day. For the majority of the UK, medication will be dispatched by Royal Mail, Monday to Friday, if ordered before 14:00. Dispatches are sent using Royal Mail's Next-Day Tracked 24-Hour service. We will email you tracking information directly and you should receive your order the day after dispatch.
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Can Promethazine be used for a cough?
Promethazine induces sleepiness, and you can feel relief from cough symptoms after 20 minutes of use.
What drugs do I need to avoid while taking Promethazine?
Promethazine causes reactions with some drugs, which should be avoided with it. These include;
Can Promethazine cause weight gain?
Weight gain is one of the side effects of the long-term use of antihistamines. It is because these drugs affect appetite control mechanisms.
What is the elimination half-life of Promethazine?
Its elimination half-life is 12 hours. It means you must repeat it twice daily, and its effects will vanish in 24 hours.
Can I use Promethazine during pregnancy?
Although limited data is available, it is known to be safe in pregnancy as soon as you can manage the side effects. However, it might interact with some drugs used during pregnancy. So, you should consult with your doctor before use.
Does Promethazine have narcotic actions?
No. It is not a narcotic. It is used to relieve the symptoms of allergic reactions and can't be used as a pain killer for deep pains.
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