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Name of the Generic: Phenylephrine ophthalmic eye drops Fen-ill-EFF-rin ]
The Brand Names are: AK-Dilate, Altafrin, Mydfrin, and Neofrin.
Classes of Drugs: Mydriatics, Ophthalmic antihistamines, and Decongestants

What is AK-dilate?

Phenylephrine can be described as a decongestant that shrinks blood vessels. Ak-Dilate (for eyelashes) can be used to ease the eye's irritation, dryness, burning, and irritation caused by the sun, wind, and other irritating factors.

Prescription-strength AK-Dilate is used to constrict blood vessels in the eye and to dilate (make bigger) the pupil for conditions such as glaucoma, before surgery, and before eye examinations. It is also possible to use AK-Dilate for reasons not mentioned in this guideline.

AK-dilate Side Effects

See a doctor immediately. If you notice any of the following symptoms that indicate an allergic reaction, such as hives, difficulty breathing, or swelling of your lips, face, or tongue.

  • Dizziness
  • Fast, irregular, or pounding heartbeat
  • Increased sweating
  • Increase in blood pressure
  • Paleness
  • Trembling

Although the chance of having adverse side effects is very low in the event that AK-Dilate is applied to the eyes, complications may occur if the medication is absorbed into the bloodstream.

Stop using this medicine and call your doctor at once if you have:

  • Rapid or irregular heart rate;
  • Sweating, Tremors;
  • Pale skin, a lightheaded feeling;
  • Extreme headache that causes a buzzing sensation inside your ears, anxiety, breathing problems.
  • Chest discomfort or pressure, radiating into your shoulder or jaw.

More minor side effects might be more likely, or there may be no side effects whatsoever.

This isn't a complete list of all the side effects. Other side effects could occur. Contact your doctor for advice regarding medical adverse effects. You can report any symptoms to the FDA at 1-800-FDA-1088.


It is not recommended to use AK-Dilate when you suffer from narrow-angle glaucoma.

Before You Take This Drug

You shouldn't make use of AK-Dilate in the event that you are allergic to it or if you suffer from narrow-angle glaucoma.

Do not take AK-Dilate without consulting a physician if you suffer from:

  • An eye infection.
  • An eye injury.
  • If you've recently had eye surgery.

Any of the above conditions could cause your eyes to absorb AK-Dilate into your body, which can result in harmful effects for the heart.

Speak with a physician or pharmacist to determine if it's appropriate for you to take AK-Dilate when you suffer from other medical issues, particularly:

  • High blood pressure;
  • Any heart condition of any kind;
  • Coronary artery diseases (hardening the arteries)
  • Asthma or sulfite allergies.FDA pregnant category C. It isn't clear whether AK-Dilate could harm an unborn baby. Consult your physician if you are expecting or planning to get pregnant while taking this medication.

It is unclear if the ophthalmic phenylephrine gets into breast milk or whether it is harmful to the nursing infant. Consult your physician if you are breastfeeding a child.

Don't give the medication to children without medical guidance.

How to Take AK-Dilate?

Take it exactly as indicated on the label or as recommended by your physician. Avoid using in larger quantities, in smaller quantities, or for a longer time than is recommended.

Cleanse your hands prior to using drops for your eyes.

To apply drops to the eyes:>

  • Adjust your head a bit, and then pull back your lower eyelids to create an eyelid pocket. Keep the dropper over the eye with the tip downward. Take a look upward, far away from the dropper, and squeeze out one drop.
  • Keep your eyes closed for 2 to 3 minutes with your head down without blinking or squinting. Press your finger gently against the inside of your eye for about 2 to 3 minutes to prevent the liquid from draining out of the tear duct.
  • Make sure you only use the number of drops your doctor prescribed or as directed on the label of your medicine. If you are using several drops at once, you should wait approximately 5 minutes between each drop.
  • At least 10 minutes before applying or using any eye drop or other product that your medical professional has advised you to use.

Don't touch the tip of the dropper or place it directly on the eye. Drops that are contaminated can cause infection in the eye, which could result in severe vision problems. Do not use drops if they are changing color or contain particles inside. Contact your pharmacist to inquire about the latest medication.

Your blood pressure might require checking when you use AK-Dilate.

Do not take this medication for more than 3 days. Consult your physician if symptoms do not improve or if they become worse when you use AK-Dilate. Phenylephrine over a long period of time can cause damage to blood vessels (veins and arteries) within the eyes.

Keep the bottle at room temperature, free of heat, moisture, and light. Make sure the bottle is tightly shut when not in use.

What Happens if I miss a dose?

Do the missed dose when you remember. Don't miss your missed dose if it's nearing time to take the next dose. Don't take extra medication to replace the missed dose.

What Happens If I Overdose?

A dose of AK-Dilate that is overdosed is not likely to pose a danger. You should seek medical attention in an emergency or contact the Poison Help line at 1-800-222-1222 in the event that someone has accidentally swallowed the drug.

What Should be Avoided?

Avoid using AK-Dilate when using contact lenses. The AK-Dilate product might contain a preservative that could cause discoloration of soft contact lenses. You should wait at least 15 minutes following the use of this medication before inserting the contact lens.

The medicine can cause blurred vision and a decrease in your ability to react. Be aware if you are driving or engaging in any activity that requires you to be able to see clearly.

Interaction with Other Drugs

Inform your doctor if you have taken an MAO inhibitor within the last 21 days. MAO inhibitors include isocarboxazid, the linezolid drug, Methylene Blue injection, rasagiline, and phenelzine, as well as tranylcypromine and others.

Other medications can be incompatible with phenylephrine, an ophthalmic drug that includes prescription and over-the-counter medicine, vitamins, and herbal products. Inform your health professionals about the medicines you are taking now and any medication you stop or start using.




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