Hot items

Sold out

Promethazine 25mg


Shipping: 24h Dispatch with Fast ‘N Insured – Global & USA Shipping

Guarantee: Money Back Guarantee with Free Tracking
Payments: MasterCard, Bitcoin & PayPal

30 Tablets 60 Tablets 90 Tablets 120 Tablets 180 Tablets 300 Tablets

Out of stock



Promethazine is an over-the-counter medicine that’s also available on prescription under multiple brand names. It is primarily an antihistamine that’s used to alleviate allergic symptoms such as itchy eyes and runny noses. However, as it also has a mild sedative effect, it may help to treat short term sleep disorders such as temporary insomnia, or ease feelings of nausea caused by pregnancy or long distance travel.

How Promethazine Works

Promethazine is an active ingredient that’s derived from a group of antipsychotic medications known as Phenothiazines. It works by interacting with the messengers that tell the body to produce histamine so that less of the substance is released, minimising the risk of allergic symptoms when exposed to common triggers like pollen or dog hair.

However, other messenger pathways are also affected by Promethazine, limiting communications between the body and the brain. This is what causes the sleepy, drowsy feeling, and what helps to relax the muscles. When the stomach muscles especially are relaxed, it may help to prevent vomiting and provide a calming effect.

Promethazine Uses

Promethazine is often prescribed to treat:

  • Allergies including hayfever
  • Allergy symptoms such as hives or a runny nose
  • Short term insomnia
  • Sleep disturbances caused by coughs or colds
  • Nausea, including travel sickness
  • Morning sickness in pregnant women

Promethazine Dosage

If you have been prescribed Promethazine, it is important to take the medicine as advised by your doctor. If taking an over-the-counter variant, follow dosing instructions on the packaging. This may typically range from 20mg to 100mg depending on the reason for taking the medicine. Promethazine should be taken at different times of day depending on the reason for the treatment. For insomnia, Promethazine is best taken 20 minutes before bedtime. For travel sickness, 1-2 hours before starting the journey.

Promethazine Side Effects

Promethazine is generally considered to be safe when taken as prescribed, or as recommended on the packaging. In some cases, it may be safe for children. However, as with many medications, some patients may experience mild side effects, including:

  • Daytime sleepiness and drowsiness
  • Headaches
  • Dizziness
  • Reduced awareness / confusion
  • Restlessness
  • Dry mouth
  • Vivid dreams
  • Visual disturbances

It is important for patients to read the patient information leaflet in the packaging for a full list of possible side effects from taking Promethazine. Always consult with your doctor if side effects persist. If experiencing difficulty breathing, call 999 immediately.



Additional information


30 Tablets, 60 Tablets, 90 Tablets, 120 Tablets, 180 Tablets, 300 Tablets


There are no reviews yet.

Be the first to review “Promethazine 25mg”