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You are here : 3-RX.com > Drugs & Medications > Quick Drug Information (DrugNotes) > Cyclopentolate (Ophthalmic)

Cyclopentolate (Into The Eye)

Cyclopentolate Hydrochloride (sye-kloe-PEN-toe-late hye-droe-KLOR-ide)

Used to dilate your eyes (make the pupils bigger) before an eye exam.

Brand Name(s):

Cyclogyl, Cylate, AK-Pentolate, Ocu-Pentolate
There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not use this medicine if you have had an allergic reaction to cyclopentolate, or if you have narrow-angle glaucoma.

How to Use This Medicine:


  • Your doctor will tell you how much of this medicine to use and how often. Do not use more medicine or use it more often than your doctor tells you to.
  • Wash your hands with soap and water before and after using this medicine.
  • Shake the eye drops well just before each use.
  • Lie down or tilt your head back. With your index finger, pull down the lower lid of your eye to form a pocket.
  • To use the eye drops: Hold the dropper close to your eye with the other hand. Drop the correct number of drops into the pocket made between your lower lid and eyeball. Gently close your eyes. Place your index finger over the inner corner of your eye for 1 minute. Do not rinse or wipe the dropper or allow it to touch anything, including your eye. Put the cap on the bottle right away. Keep the bottle upright when you are not using it.
  • Your eyes should be dilated within 30 to 60 minutes after using the medicine. Your vision will be blurry. You should be able to see normally again within 6 to 24 hours.

If a dose is missed:

  • If you miss a dose or forget to use your medicine, use it as soon as you can. If it is almost time for your next dose, wait until then to use the medicine and skip the missed dose. Do not use extra medicine to make up for a missed dose.
How to Store and Dispose of This Medicine:

  • Store the medicine at room temperature, away from heat and direct light.
  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of the used medicine container and any leftover medicine after you have finished your treatment. You will also need to throw away old medicine after the expiration date has passed.
  • Keep all medicine away from children and never share your medicine with anyone.
Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Make sure your doctor knows if you are also using any medicine for glaucoma (such as carbachol, demecarium, isoflurophate, pilocarpine, Floropryl®, Humorsol®, Miostat®, Pilopine HS®) or any other medicine in your eye.
Warnings While Using This Medicine:

  • Make sure your doctor knows if you are pregnant or breastfeeding, or if you have digestion problems, heart disease, kidney disease, liver disease, or trouble urinating. Tell your doctor if you have nerve or muscle problems.
  • If this medicine is being given to a child, make sure the doctor knows if the child has Down's syndrome, brain damage, or spastic paralysis (a disorder of the muscles and nerves).
  • Although this medicine is used in your eyes, some of the medicine may be absorbed into your body. This means you may have side effects in other parts of your body, such as nausea or gas in your stomach. Babies and children are more likely to have side effects from this medicine. Talk with your doctor about this if you are concerned.
  • If you still have blurred vision on the day after your eye exam, call your doctor.
  • Avoid driving, using machines, or doing anything else that could be dangerous if you cannot see well.
  • This medicine will make your eyes sensitive to light. Wear sunglasses if you go outside.
  • Some people may have mild trouble with accommodation for a few days after receiving this medicine. Accommodation is how well you can focus your eyes when you change from looking at something close to looking at something far away.
  • It is best to not feed a baby for 4 hours after the baby receives this medicine.
Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

  • Dizziness, trouble walking, feeling unsteady
  • Eye burning or watering that does not go away
  • Eye redness, pain, or swelling
  • Fast heartbeat
  • Rash or itching around your eyes
  • Unusual behavior, confusion, nervousness

If you notice these less serious side effects, talk with your doctor:

  • Dry mouth
  • Mild burning feeling in your eyes right after putting the drops in
  • Warmth or redness in your face, neck, arms or upper chest
If you notice other side effects that you think are caused by this medicine, tell your doctor.

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