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Venturax 20 mg/ml + 5 mg/ml eye drops, solution
Dorzolamide / Timolol

Read all of this leaflet carefully before you start using this medicine.
Keep this leaflet. You may need to read it again.
If you have any further questions, ask your doctor or pharmacist.
This medicine has been prescribed for you. Do not pass it on to others. It may harm them, even if their
symptoms are the same as yours.
If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, please
tell your doctor or pharmacist.

In this leaflet:
What Venturax is and what it is used for
Before you use Venturax
How to use Venturax
Possible side effects
How to store Venturax
Further information



Venturax is a combination of two medicines: dorzolamide and timolol.

• Dorzolamide belongs to a group of medicines called “carbonic anhydrase inhibitors”.
• Timolol belongs to a group of medicines called “beta blockers.
Venturax is prescribed to lower raised pressure within the eye in the treatment of glaucoma when betablocker eye drops used alone are not adequate.



Do not use Venturax
if you are allergic (hypersensitive) to any of the ingredients of this solution.
if you have a respiratory disease such as asthma, have a history of asthma or have chronic obstructive
lung disease
if you have severe kidney problems, or a prior history of kidney stones,
if you have a disturbance in the pH (acid/alkali balance) of your blood,
if you have certain heart problems, including certain heart rhythm disturbances producing an
abnormally slow heart rate or severe heart failure.
If you think any of these apply to you, do not use Venturax until you have consulted your doctor.

Take special care with Venturax
If you have a history of heart disease your doctor may wish to monitor your pulse rate and other signs of this
disease while you are using Venturax.
Tell your doctor if you now have or have had liver problems, if you have muscle weakness or have been
diagnosed as having myasthenia gravis.
You should also tell your doctor if you now have, or have had in the past, asthma or other lung problems,
Prinzmetal’s angina (chest pains while resting), other heart problems, (including some types of heart rhytm

disturbances producing an abnormally slow heart rate oe severe heart failure), circulatory problems, low
blood pressure, diabetes or hypoglycaemia (low blood sugar), thyroid problems and about any allergies to a
medicine you have taken.
If you develop conjunctivitis (redness and irritation of the eye[s]), swelling of the eye or eyelids, skin rash,
or itching in and around the eye contact your doctor immediately. Such symptoms may be due to an allergic
reaction or may be a side-effect of Venturax (See ‘Possible Side Effects’).
Tell your doctor if you develop an eye infection, receive an eye injury, have eye surgery, develop other
reactions or worsening of symptoms.
If you wear soft contact lenses, it is important that your lenses are removed before using your eye drops and
not put back into your eyes until 15 minutes after using your eye drops as the preservative benzalkonium
chloride may possibly discolour the contact lenses.
Before surgery and anaesthesia (even at the dentist), tell your doctor or dentist that you are taking Venturax,
as there may be a sudden fall in blood-pressure associated with the anaesthetic.
Use in children
There is limited experience with Venturax in infants and children.
Use in elderly
In studies with Dorzolamide/Timolol eye drops solution the effects of Dorzolamide/Timolol eye drops
solution were similar in both elderly and younger patients.
Using other medicines
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including
medicines obtained without a prescription. This is particularly important if any of the following apply to you:


You are taking antihypertensive medicines which are used to lower high blood pressure or medicines to
treat heart disease such as calcium channel blockers and ß-blockers or digoxin
You are taking medicines to treat a disturbed or uneven heartbeat such as quinidine or digoxin
You are using another eyedrop that contains a ß-blocker
You are taking another carbonic anhydrase inhibitor such as acetazolamide. You may be taking this type
of medicine by mouth, as eye drops, or by some other method
You are taking monoamine oxidase inhibitors (MAOIs) or selective serotonin reuptake inhibitors
(SSRIs) both of which are used to treat depression or another illness
You are taking a parasympathomimetic medicine which may have been prescribed to help you pass
urine. Parasympathomimetics are also a particular type of medicine which are sometimes used to help
restore normal movements through the bowel
You are taking narcotics such as morphine used to treat moderate to severe pain or if you are taking
large doses of aspirin. Although there is no evidence that dorzolamide hydrochloride interacts with
aspirin, some other medicines which are related to dorzolamide hydrochloride and which are taken by
mouth, have been known to interact with aspirin
You are taking medicines to treat diabetes or high blood sugar
You are taking epinephrine (adrenaline).

Pregnancy and breast-feeding
Ask your doctor or pharmacist for advice before taking any medicine.
You should not use Venturax during pregnancy. Tell your doctor if you are pregnant or planning to become
If treatment with Venturax is required, breast-feeding is not recommended. Tell your doctor if you are breastfeeding or intend to breast-feed.

Driving and using machines

Venturax may cause side effects such as blurred vision in some patients. Do not drive or use any tools or
machines until the symptoms have cleared.

Important information about some of the ingredients of Venturax
Venturax contains the preservative benzalkonium chloride.
• Benzalkonium chloride may cause eye irritation
• Benzalkonium chloride is known to discolour soft contact lenses. Avoid contact with soft contact lenses.
Remove contact lenses prior to application and wait until 15 minutes before re-insertion.



Always use Venturax exactly as your doctor has told you. You should check with your doctor or pharmacist
if you are not sure.
The appropriate dosage and duration of treatment will be established by your doctor.
The usual dose is one drop in the affected eye(s) two times a day, for example in the morning and in the
If you use Venturax with another eye drop, leave at least 10 minutes between putting in Venturax and the
other medicine.
Do not change the dosage of the drug without consulting your doctor. If you must stop treatment, contact
your doctor immediately.
Do not allow the tip of the container to touch your eye or areas around your eye. It may become
contaminated with bacteria that can cause eye infections leading to serious damage of the eye, even loss of
vision. To avoid possible contamination of the container, keep the tip of the container away from contact
with any surface.
In order to secure correct dosage - the dropper tip should not be enlarged.
Instructions for use:
It is recommended that you wash your hands before putting in your eye drops.
It may be easier to apply your eye drops in front of a mirror.

1. Before using the medication for the first time, be sure that the tamper-proof seal on the bottle neck is
unbroken. A gap between the bottle and the cap is normal for an unopened bottle.
2. Take off the cap of the bottle.
3. Tilt your head back and gently pull your lower eyelid down to form a small pocket between your eyelid
and your eye.
4. Invert the bottle, and squeeze it until a single drop is dispensed into the eye as directed by your doctor. DO
5. Repeat steps 3 & 4 with the other eye if instructed to do so by your doctor.
6. Put the cap back on and close the bottle straight after you have used it.


If you use more Venturax than you should
It is important to keep to the dose your doctor has prescribed. If you put too many drops in your eye or
swallow any of the contents of the bottle, you may feel unwell, for example you may become light-headed,
have difficulty breathing, or feel that your heart rate has slowed. If you feel any of the above effects you
should seek medical attention immediately.

If you forget to use Venturax
It is important to use Venturax as prescribed by your doctor.
If you miss a dose, apply it as soon as possible. However, if it is almost time for the next dose, skip the
missed dose and go back to your regular dosing schedule.
Do not use a double dose to make up for forgotten individual doses.
If you stop taking Venturax
If you want to stop using this medicine talk to your doctor first.
If you have any further questions on the use of this product, ask your doctor or pharmacist.



Like all medicines, Venturax can cause side effects, although not everybody gets them.
If you develop allergic reactions including hives, swelling of the face, lips, tongue, and/or throat which may
cause difficulty in breathing or swallowing, you should stop [Dorzolamide /Timolol] and talk to your doctor

The following side effects may be seen with Venturax:
Very Common (affects more than 1 user in 10):
Burning and stinging of the eyes, unusual taste

Common (affects 1 to 10 users in 100):
Redness in and around the eye(s), watering or itching of the eye(s), and effects on the surface of the eye(s),
swelling and/or irritation in and around the eye(s), feeling of having something in the eye(corneal erosion),
decreased corneal sensitivity (not realising of getting something in the eye and not feeling pain), eye pain,
dry eyes, blurred vision, headache, sinusitis (feeling of tension or fullness in the nose), feeling sick, also
called nausea, and fatigue
Uncommon (affects 1 to 10 users in 1,000):
Dizziness, depression, inflammation of the iris, blurred vision (in some cases due to withdrawal of medication to treat
excessive contraction of the pupil of the eye) , slow heartbeat, fainting, indigestion, and kidney stones (often marked by
a sudden onset of excruciating, cramping pain in their low back and/or side, groin, or abdomen).

Rare (affects 1 to 10 users in 10,000):
systemic lupus erythematosus (an immune disease which may cause an inflammation of internal organs),
tingling or numbness of the hands or feet, trouble sleeping, nightmares, memory loss, weakening of the
muscles, decreased sex drive, stroke, temporary shortsightedness which may resolve when treatment is
stopped, development of fluid under the retina (choroidal detachment following filtration surgery), drooping
of the eyelids, double vision, eyelid crusting, swelling of the cornea (with symptoms of visual disturbances),
low pressure in the eye, ringing noises in your ear, low blood pressure, irregular heartbeat, chest pain,
palpitations (a quicker and/or irregular heartbeat), heart attack, reduced blood flow to the brain, swelling or

coldness of your hands and feet and reduced circulation in your arms and legs, leg cramps and/or leg pain
when walking (claudication), shortness of breath, feeling out of breath, runny or stuffed nose, nose bleed,
difficulty in breathing, cough, throat irritation, dry mouth, diarrhoea, contact dermatitis, hair loss, psoriasis
or worsening of psoriasis, Peyronie’s disease (which may cause a curvature of the penis),
weakness/tiredness, allergic type reactions such as rash, hives, itching, in rare cases possible swelling of the
lips, eyes and mouth, wheezing.
If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, please tell
your doctor or pharmacist, particularly if you experience any changes/visual disturbance when using
Venturax after eye surgery.



Keep out of the reach and sight of children.
Do not use Venturax 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.
This medicinal product does not require any special temperature storage conditions.
Venturax should be used within 28 days after the bottle is first opened. Therefore, you must throw away the
bottle 4 weeks after you first opened it, even if some solution is left. To help you remember, write down the
date that you opened it in the space on the carton.
Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to
dispose of medicines no longer required. These measures will help to protect the environment.



What Venturax contains
The active substances are Dorzolamide and Timolol. Each ml contains 20 mg dorzolamide (as 22.26
mg of dorzolamide hydrochloride) and 5 mg timolol (as 6.83 mg of timolol maleate).
The other ingredients are Mannitol (E421), Hydroxy Ethyl Cellulose, Benzalkonium Chloride (as a
preservative), Sodium Citrate (E331), Sodium Hydroxide (E524) for pH adjustment and Water for

What Venturax looks like and contents of the pack
Your medicine is in the form of a sterile, clear, slightly viscous, colourless aqueous eye drop solution.
Venturax is presented in a white opaque medium density polyethylene bottle with a sealed low density
polyethylene dropper tip and a high density polyethylene cap with tamper proof seal, containing 5 mL of the
ophthalmic solution.
Pack size: 1, 3 or 6 bottles of 5ml each.
Not all pack sizes may be marketed.

Marketing Authorisation Holder
Pharmathen S.A.
6, Dervenakion str.,
153 51 Pallini, Attiki,

Pharmathen S.A.
6, Dervenakion str.,
153 51 Pallini, Attiki,
Famar S.A.
63 Agiou Dimitriou Street,
174 56 Alimos

This leaflet was last approved in 02/2011

Detailed information on this medicine is available on the web site of {MA/Agency}


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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.