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Bimatoprost 0.3 mg / ml eye drops solution – patient leaflet, side effects, dosage

Last updated: · Text from the MHRA, as of · About this document

Medicine status: Prescription only (POM) Details

Medicine strength:
0.3 mg / ml (300 microgram/ml)
Contains active substance:
Similar medicines:

Patient leaflet - Bimatoprost 0.3 mg / ml eye drops solution

1. What Bimatoprost is and what it is used for

Bimatoprost is an antiglaucoma preparation. It belongs to a group of medicines called prostamides.

Bimatoprost is used to reduce high pressure in the eye. This medicine may be used on its own or with other drops called beta-blockers which also reduce pressure.

Your eye contains a clear, watery liquid that feeds the inside of the eye. Liquid is constantly being drained out of the eye and new liquid is made to replace this. If the liquid cannot drain out quickly enough, the pressure inside the eye builds up. This medicine works by increasing the amount of liquid that is drained. This reduces the pressure inside the eye. If the high pressure is not reduced, it could lead to a disease called glaucoma and eventually damage your sight.

2. What you need to know before you use Bimatoprost

Do not use Bimatoprost:

  • if you are allergic to bimatoprost or any of the other ingredients of this medicine (listed

    in section 6).

  • if you have had to stop using eye drops in the past because of a side effect of the

    preservative benzalkonium chloride.

Warnings and precautions

Talk to your doctor or pharmacist before you use Bimatoprost:

Talk to your doctor, if:

  • You have any breathing problems
  • You have liver or kidney problems
  • You have had a cataract surgery in the past
  • You have dry eye
  • You have or have had any problems with your cornea (front transparent part of the

    eye)

  • You wear contact lenses (see “Bimatoprost eye drops, solution contains

    benzalkonium chloride”)

  • You have or have had low blood pressure or low heart rate
  • You have had a viral infection or inflammation of the eye

During treatment, bimatoprost may cause a loss of fat around the eye, which may cause your eyelid crease to deepen, your eye to appear sunken (enophthalmos), your upper eyelid to droop (ptosis), the skin around your eye to tighten (involution of dermatochalasis) and the lower white part of your eye to become more visible (inferior scleral show). The changes are typically mild, but if pronounced, they can affect your field of vision. The changes may disappear if you stop taking Bimatoprost. Bimatoprost may also cause your eyelashes to darken and grow, and cause the skin around the eyelid to darken too. The colour of your iris may also go darker. These changes may be permanent. The changes may be more noticeable if you are only treating one eye.

Children and adolescents

Bimatoprost has not been tested in children under the age of 18 and therefore Bimatoprost should not be used by patients under 18 years.

Other medicines and Bimatoprost

Tell your doctor or pharmacist if you are taking, or have recently taken, or might take any other medicines.

Pregnancy and breast-feeding

If you are pregnant or breast-feeding, think you might be pregnant or are planning to have a baby, ask your doctor or pharmacist for advice before taking any medicine.

Bimatoprost may get into breast milk so you should not breast-feed while you are taking Bimatoprost.

Driving and using machines

Your sight may become blurred for a short time just after using bimatoprost. You should not drive or use machines until your sight is clear again.

Bimatoprosteye drops, solution contains benzalkonium chloride

This medicine contains 0.15 mg benzalkonium chloride in each 3 ml of solution which is equivalent to 0.05 mg/ml.

Do not use the drops when you are wearing your lenses. A preservative in Bimatoprost, benzalkonium chloride may be absorbed by soft contact lenses and may change the colour of the contact lenses. You should remove contact lenses before using this medicine and wait 15 minutes after using the drops before you put your lenses back in. Benzalkonium chloride may also cause eye irritation, especially if you have dry eyes or disorders of the cornea (the clear layer at the front of the eye). If you feel abnormal eye sensation, stinging or pain in the eye after using this medicine, talk to your doctor.

3. How to use Bimatoprost

Always use this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.

Bimatoprost should only be applied to the eye. The recommended dose is one drop of Bimatoprost in the evening, once daily in each eye that needs treatment.

If you use Bimatoprost with another eye medicine, wait at least five minutes between using Bimatoprost and the other eye medicine.

Do not use more than once a day as the effectiveness of treatment may be reduced.

Instructions for use:

You must not use the bottle if the tamper-proof seal on the bottle neck is broken before you first use it.

  1. 1. Wash your hands. Tilt your head back and look at the ceiling.
  2. 2. Gently pull down the lower eyelid until there is a small pocket.
  3. 3.

    Turn the bottle upside down and squeeze it to release one drop into each eye that

    needs treatment.

  4. 4. Let go of the lower lid, and close your eye for 30 seconds.

Wipe off any excess that runs down the cheek.

If a drop misses your eye, try again.

To help prevent infections and avoid eye injury, do not let the tip of the bottle touch your eye or anything else. Put the cap back on and close the bottle straight after you have used it.

If you use more Bimatoprost than you should

If you use more Bimatoprost than you should, it is unlikely to cause you any serious harm. Put your next dose in at the usual time. If you are worried, talk to your doctor or pharmacist.

If you forget to use Bimatoprost

If you forget to use Bimatoprost, use a single drop as soon as you remember, and then go back to your regular routine. Do not take a double dose to make up for a forgotten dose.

If you stop using Bimatoprost

Bimatoprost should be used every day to work properly. If you stop using Bimatoprost the pressure inside your eye may go up, therefore talk to your doctor before stopping this treatment.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Very common side effects

These may affect one or more users in 10

Affecting the eye

  • Longer eyelashes (up to 45% of people)
  • Slight redness (up to 44 % of people)
  • Itchiness (up to 14% of people)
  • Loss of fat in the eye region which can lead to deepening of your eyelid crease, sunken eye (enophthalmos), drooping eyelid (ptosis), tightening of the skin around your eye (involution of dermatochalasis), and the lower white part of your eye to become more visible (inferior scleral show)

Common side effects

These may affect 1 to 9 users in 100

Affecting the eye

  • An allergic reaction in the eye
  • Tired eyes
  • Sensitivity to light
  • Darker skin colour around the eye
  • Darker eyelashes
  • Pain
  • A feeling that something is in your eye
  • Sticky eyes
  • Darker iris colour
  • Difficulty in seeing clearly
  • Irritation
  • Burning
  • Inflamed, red and itchy eyelids
  • Tears
  • Dryness
  • Worsening of vision
  • Blurred vision
  • Swelling of the see-through layer which covers the surface of the eye
  • Small breaks in the surface of the eye, with or without inflammation

Affecting the body

  • Headaches
  • An increase in blood-test results that show how your liver is working
  • Increased blood pressure

Uncommon side effects

These may affect 1 to 9 users in 1000

Affecting the eye

  • Cystoid macular oedema (swelling of the retina within the eye leading to worsening vision)
  • Inflammation within the eye
  • Retinal bleeding
  • Swollen eyelids
  • Eyelid twitching
  • Eyelid shrinking, moving away from surface of the eye
  • Skin redness around the eye

Affecting the body

  • Nausea
  • Dizziness
  • Weakness
  • Hair growth around the eye

Side effects where the frequency is not known

Affecting the eye

  • Ocular discomfort

Affecting the body

  • Asthma
  • Worsening of asthma
  • Worsening of the lung disease called chronic obstructive pulmonary disease (COPD)
  • Shortness of breath
  • Symptoms of allergic reaction (swelling, redness of the eye and rash of the skin)
  • Skin discoloration (periocular)

Other side effects reported with eye drops containing phosphates.

In very rare cases, some patients with severe damage to the clear layer at the front of the eye (the cornea) have developed cloudy patches on the cornea due to calcium build-up during treatment.

Reporting side effects

If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

By reporting side effects you can help provide more information on the safety of the medicine.

5. How to store Bimatoprost

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the bottle label and the carton after EXP:. The expiry date refers to the last day of that month.

You must throw away the bottle, at the latest, four weeks after you first opened it, even if there are still some drops left. This will prevent infections. To help you remember, write down the date you opened it in the space on the box.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help to protect the environment.

6. Contents of the pack and other information

What Bimatoprost eye drops, solution contains

  • The active substance is bimatoprost. One ml of solution contains 0.3 mg bimatoprost.
  • The other ingredients are benzalkonium chloride (preservative), sodium chloride, Di-sodium hydrogen phosphate heptahydrate, citric acid monohydrate and purified water. Small amounts of hydrochloric acid or sodium hydroxide may be added to keep the level of acid (pH levels) normal.

What Bimatoprost eye drops, solution looks like and contents of the pack

Bimatoprost eye drops, solution is a colourless clear eye drop solution in a pack containing 1 or 3 plastic bottles with a screw cap. The bottle is approximately half full and contains 3 millilitres of solution. This is enough for 4 weeks' usage. Not all pack sizes may be marketed.

Marketing Authorisation Holder and Manufacturer

Brown & Burk UK Limited

Micro House

Bury street

Ruislip

H4A 7TL

United Kingdom

This leaflet was last revised in 01/2025

110(L) x 520(W) mm

Back Side

MICRO LABS LIMITED

Bangalore, INDIA

110(L) x 520(W) mm

  1. 1) Product :
  2. 2) Strength :
  3. 3) Component :
  4. 4) No of colours :
  5. 5)

    Dimension :

    Bimatoprost Eye Drops, solution - BBUK

    0.3 mg/mL

    Leaflet

    01

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    Arial Narrow, 9pt

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Code No. :

WOA WA

Revision: 00
Reason for ChangeDate: 29-01-2025
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Package leaflet: Information for the user Bimatoprost 0.3 mg/mL Eye Drops, solution

Bimatoprost

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About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PL 25298/0384

Last revision stated in the text: January 2025 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Bimatoprost 0.3 mg / ml eye drops solution

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Bimatoprost
Strength 0.3 mg / ml (300 microgram/ml)
Pharmaceutical form Eye drops
Clear Colourless solution.
How is it taken Ocular
Excipients Benzalkonium chloride, Sodium chloride, Di-Sodium hydrogen phosphate heptahydrate, Citric acid monohydrate, Hydrochloric acid or sodium hydroxide (to adjust pH), Purified water
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Shelf life 2 years.
4 weeks after first opening.
Storage This medicinal product does not require any special storage conditions.
Drug group (ATC) Ophthalmologicals, prostaglandin analogues
  1. S Sensory organ drugs
    1. S01 Ophthalmologicals
      1. S01E Antiglaucoma preparations and miotics
        1. S01EE Prostaglandin analogues, antiglaucoma drugs and miotics
          1. S01EE03 bimatoprost
Marketing authorisation PL 25298/0384 (first authorised 5 February 2025)
Marketing authorisation holder Brown & Burk UK Limited
Codes BNF 11060000

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.1.0 of 12 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.