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Betimol Side Effects Center
Medical Editor: John P. Cunha, DO, FACOEP
Betimol (timolol) Ophthalmic Solution is a beta-blocker used to treat open-angle glaucoma and other causes of high pressure inside the eye. Common side effects include blurred vision, double vision, drooping eyelid, burning or stinging in your eye, headache, weakness, drowsiness, numbness, tingling, or cold feeling in your hands or feet, ringing in your ears, dry mouth, nausea, diarrhea, loss of appetite, upset stomach, skin rash or worsening psoriasis, insomnia, cough, or stuffy nose
The usual starting dose is one drop of 0.25 percent Betimol in the affected eye(s) twice a day. Betimol may interact with clonidine, quinidine, reserpine, digitalis, acetazolamide, dichlorphenamide, methazolamide, oral timolol, other beta-blockers, calcium channel blockers, or antidepressants. Tell your doctor all medications and supplements you use. During pregnancy, only use Betimol if prescribed. Betimol passes into breast milk and could harm a nursing baby. Consult your doctor before breastfeeding.
Our Betimol (timolol) Ophthalmic Solution Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is Patient Information in Detail?
Easy-to-read and understand detailed drug information and pill images for the patient or caregiver from Cerner Multum.
Betimol in Detail - Patient Information: Side Effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using this medication and call your doctor at once if you have any of these serious side effects:
- swelling or redness of your eyelids;
- eye redness, discomfort, or sensitivity to light;
- drainage, crusting, or oozing of your eyes or eyelids;
- depressed mood, confusion, hallucinations, unusual thoughts or behavior;
- wheezing, gasping, or other breathing problems;
- swelling, rapid weight gain;
- chest pain, slow or uneven heart rate; or
- feeling short of breath, even with mild exertion.
Less serious side effects may include:
- blurred vision, double vision, drooping eyelid;
- burning or stinging in your eye;
- headache, weakness, drowsiness;
- numbness, tingling, or cold feeling in your hands or feet;
- ringing in your ears;
- dry mouth;
- nausea, diarrhea, loss of appetite, upset stomach;
- skin rash or worsening psoriasis;
- sleep problems (insomnia); or
- cough, stuffy nose.
This is not a complete list of side effects and others may occur. Tell your doctor about any unusual or bothersome side effect. You may report side effects to FDA at 1-800-FDA-1088.
Read the entire detailed patient monograph for Betimol (Timolol Ophthalmic Solution) »
What is Patient Information Overview?
A concise overview of the drug for the patient or caregiver from First DataBank.
Betimol Overview - Patient Information: Side Effects
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: dizziness, eye pain/swelling/discharge, slow/irregular heartbeat, muscle weakness, mental/mood changes, coldness/numbness/pain in the hands or feet.
Tell your doctor immediately if any of these rare but very serious side effects occur: vision changes, unusual tiredness/weakness.
Seek immediate medical attention if any of these rare but very serious side effects occur: trouble breathing, sudden unexplained weight gain, chest pain, weakness on one side of the body, slurred speech, confusion, persistent dizziness, fainting.
A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Read the entire patient information overview for Betimol (Timolol Ophthalmic Solution)»
What is Prescribing information?
The FDA package insert formatted in easy-to-find categories for health professionals and clinicians.
Betimol FDA Prescribing Information: Side Effects
The following adverse events were associated with use of Betimol® (timolol ophthalmic solution) in frequencies of more than 5% in two controlled, double-masked clinical studies in which 184 patients received 0.25% or 0.5% Betimol® (timolol ophthalmic solution) :
Dry eyes, itching, foreign body sensation, discomfort in the eye, eyelid erythema, conjunctival injection, and headache.
Body as a whole
The following side effects were reported in frequencies of 1 to 5%:
Body as a whole
Dizziness and dry mouth.
Respiratory infection and sinusitis.
In addition, the following adverse reactions have been reported with ophthalmic use of beta blockers:
Conjunctivitis, blepharoptosis, decreased corneal sensitivity, visual disturbances including refractive changes, diplopia and retinal vascular disorder.
Body as a whole
Read the entire FDA prescribing information for Betimol (Timolol Ophthalmic Solution) »
Additional Betimol Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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