Hypromellose is sometimes called hydroxypropyl methylcellulose.

Gonak Hypromellose (for the eyes) is used as an eye lubricant to treat dry irritated eyes.

Gonak Hypromellose is also used during certain eye surgeries to help maintain the shape of the eye, and to protect the tissues of the eye from injury during the procedure.

Gonak Hypromellose is also used during certain eye examinations to protect the cornea (the protective front layer of your eye), and to help determine whether fluid is properly draining from the eye.

Gonak Hypromellose may also be used for purposes not listed in this medication guide.

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Wash your hands before using eye medication.

To apply the eye drops: Tilt your head back slightly and pull down your lower eyelid to create a small pocket. Hold the dropper above the eye and squeeze a drop into this pocket. Close your eyes for 1 or 2 minutes.

Use only the number of drops your doctor has prescribed.

Do not touch the tip of the eye dropper or place it directly on your eye. A contaminated dropper can infect your eye, which could lead to serious vision problems.

Do not use the medicine if it looks cloudy or has changed colors.

Call your doctor if your symptoms do not improve after 72 hours, or if they get worse.

Store this medicine at room temperature. Do not freeze. Keep the bottle tightly closed when not in use.

When used during an eye exam or eye surgery, Gonak Hypromellose is given by a healthcare professional in a clinic setting.

Tell your doctor if you have ever had glaucoma.

Tell your doctor if you are pregnant or breastfeeding.

Do not give Gonak Hypromellose to a child without medical advice.

Since Gonak Hypromellose is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222, especially if anyone has accidentally swallowed the medication.

Do not use while wearing soft contact lenses. A preservative in Gonak Hypromellose could permanently stain the lenses. Use the medicine at least 15 minutes before inserting your contact lenses.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Gonak Hypromellose may cause serious side effects. Call your doctor at once if you have:

• eye redness, itching, or discomfort;

• vision changes;

• puffy or droopy eyelids; or

• a lump or swelling in your eyelid.

Common side effects of Gonak Hypromellose may include:

• dry eyes.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.