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Phentolamine Eye Solution

What is this medication?

PHENTOLAMINE (fen TOL a meen) treats enlarged (dilated) pupils after an eye exam. It works by reducing the size of your pupil. This decreases blurry vision and sensitivity to light, which makes it easier to read, work, and drive.

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This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

What should I tell my care team before I take this medication?

They need to know if you have any of these conditions:

  • Eye inflammation
  • Wear contact lenses
  • An unusual or allergic reaction to phentolamine, other medications, foods, dyes, or preservatives
  • Pregnant or trying to get pregnant
  • Breastfeeding

How should I use this medication?

This medication is only for use in the eye. Follow the directions on the prescription label. Wash hands before and after use. Tilt your head back slightly and pull your lower eyelid down with your index finger to form a pouch. Try not to touch the tip of the dropper or tube to your eye, fingertips, or other surfaces. Squeeze the prescribed number of drops into the pouch. Close the eye gently to spread the drops.

Talk to your care team about the use of this medication in children. While this medication may be prescribed for children as young as 3 years old for select conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?

This does not apply. This medication is not for regular use.

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What may interact with this medication?

Interactions are not expected. Do not use any other eye products without talking to your care team.

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

What should I watch for while using this medication?

Visit your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse.

What side effects may I notice from receiving this medication?

Side effects that you should report to your care team as soon as possible:

  • Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat

Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):

  • Burning or stinging of the eyes after use
  • Change in taste
  • Eye redness

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Where should I keep my medication?

Keep out of the reach of children and pets.

Store in the refrigerator. Do not freeze. After opening the foil pouch, this product can be stored at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Get rid of any unopened vials after they expire or 14 days after opening the foil pouch, whichever is first. Get rid of the single use vial right away after use.

To get rid of medications that are no longer needed or have expired:

  • Take the medication to a medication take-back program. Check with your pharmacy or law enforcement to find a location.
  • If you cannot return the medication, ask your pharmacist or care team how to get rid of this medication safely.

NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.

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Note: Introduction and Additional Common Questions written and medically approved by Cleveland Clinic professionals.

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