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Cyclopentolate

Brand names: Ak-Pentolate, Cyclogyl, Cylate, Pentolair, Ocu-Pentolate

What is cyclopentolate used for?

  • Cyclopentolate is used to widen the pupil before an eye exam or eye surgery.

Before taking cyclopentolate, tell your doctor:

  • If you are allergic to cyclopentolate; any part of this medicine; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have glaucoma.

This is not a list of all drugs or health problems that interact with cyclopentolate.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take cyclopentolate with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take cyclopentolate?

For all patients taking cyclopentolate:

  • Tell all of your health care providers that you take cyclopentolate. This includes your doctors, nurses, pharmacists, and dentists.
  • Avoid driving and doing other tasks or actions that call for clear eyesight while your pupils are dilated.
  • Bright lights may bother you. Wear sunglasses.
  • This medicine may cause harm if swallowed. If cyclopentolate is swallowed, call a doctor or poison control center right away.
  • Tell your doctor if you are pregnant, plan on getting pregnant, or are breast-feeding. You will need to talk about the benefits and risks to you and the baby.

Children:

  • Use with care in children. Talk with the doctor.
  • If the patient is an infant, do not feed your child for 4 hours after your child uses cyclopentolate.

How is cyclopentolate best taken?

Use cyclopentolate as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • For the eye only.

What do I do if I miss a dose?

  • Call your doctor to find out what to do.

What are the side effects of cyclopentolate that I need to call my doctor about immediately?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Change in eyesight, eye pain, or very bad eye irritation.
  • Feeling confused.
  • Behavior problems.
  • Hallucinations (seeing or hearing things that are not there).
  • Trouble speaking.
  • Seizures.
  • Change in balance.
  • Restlessness.

What are some other side effects of cyclopentolate?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Burning.
  • Eye irritation.
  • Blurred eyesight.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If overdose is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out cyclopentolate?

  • If you need to store cyclopentolate at home, talk with your doctor, nurse, or pharmacist about how to store it.

Consumer information use and disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about cyclopentolate, please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take cyclopentolate or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to cyclopentolate. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Source: Wolters Kluwer Health. Last updated April 5, 2023.