Istalol Coupon - Istalol 2.5ml of 0.5% eye dropper
TIMOLOL is used in the eye to treat open-angle glaucoma and high pressure in the eye. Compare beta blockers.
Istalol Coupon - Istalol 2.5ml of 0.5% eye dropper

Insurance Coverage: Many major insurance plans no longer cover Istalol starting in 2016. Learn More


Istalol Side Effects

What should I watch for?

Visit your doctor or health care professional for regular exams. Ask your doctor or health care professional if you should continue to use this medicine if you injure your eyes, get an eye infection, or need eye surgery.

You may get drowsy or dizzy. Do not drive, use machinery, or do anything that requires mental alertness until you know how this medication affects you. To reduce the risk of dizzy or fainting spells, do not sit or stand up quickly.

If you wear soft contact lenses, you should not put this medicine in your eyes while wearing the lenses. After using the eye drops, wait about 15 minutes before putting lenses in your eyes.

Wear dark glasses if this medicine makes your eyes more sensitive to light.


Interactions with Medications

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Blurred vision

burning or stinging in eye

Less common

Arm, back, or jaw pain

blisters, hives, welts, or itching

blue lips, fingernails, or skin

burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings

change in vision

chest pain or discomfort

chest tightness or heaviness

confusion about identity, place, and time

continuing ringing or buzzing or other unexplained noise in ears

coughing that sometimes produces a pink frothy sputum


difficult, fast, noisy breathing, sometimes with wheezing

difficulty in chewing, swallowing, or talking

dilated neck veins

discharge, excessive tearing

disturbed color perception

dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly

double vision

drooping eyelids

dry or itching eyes

extreme fatigue

false sense of well-being

fast, slow, irregular, pounding, or racing heartbeat or pulse

fear, nervousness

feeling of having something in the eye

fever and chills

flashes of light, floaters in vision

general feeling of discomfort or illness

hair loss

halos around lights


inability to speak

increased sweating

irregular, fast or slow, or shallow breathing

large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs

lightheadedness, dizziness, or fainting

loss of vision

memory loss

mood swings

muscle or joint pain

muscle weakness


night blindness

no blood pressure or pulse

overbright appearance of lights

pain, tension, and weakness upon walking that subsides during periods of rest

pale skin

paleness or cold feeling in fingertips, toes, hands, and feet

personality changes

pounding in the ears

puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue

redness of skin

redness, pain, swelling or irritation of eye, eyelid, or inner lining of eyelid

seeing double

seeing, hearing, or feeling things that are not there


severe numbness, especially on one side of the face or body

severe or sudden headache

severe tiredness

shortness of breath or troubled breathing

skin irritation or rash, including rash that looks like psoriasis

slurred speech

sore throat

stopping of heart


swelling of face, fingers, feet, lower legs, and ankles

swollen glands

temporary blindness

tingling or pain in fingers or toes when exposed to cold

tunnel vision


unusual tiredness or weakness

weakness in arm and/or leg on one side of the body, sudden and severe

weight gain


Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common

Acid or sour stomach


body aches or pain


dry mouth

ear congestion

hearing loss



lack or loss of strength

loss of appetite

loss of voice


runny nose

sleepiness or unusual drowsiness



stomach discomfort, upset, or pain

stuffy nose

trouble sleeping

unable to sleep

weight loss

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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