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What is the most important information I should know about tetrahydrozoline-zinc ophthalmic?

Do not touch the dropper to any surface, including the eyes or hands. The dropper is sterile. If it becomes contaminated, it could cause an infection in the eye.

Apply light pressure to the inside corner of the eye (near the nose) after each drop to prevent the fluid from draining down the tear duct.

Do not use tetrahydrozoline-zinc ophthalmic more often or continuously for longer than 48 to 72 hours without consulting a doctor. Chronic use of this medication may damage the blood vessels (veins and arteries) in the eyes. Consult a doctor if your symptoms do not improve or appear to worsen.

Do not use tetrahydrozoline-zinc ophthalmic if you have glaucoma, except under the direction of your doctor.

What is tetrahydrozoline-zinc ophthalmic?

Tetrahydrozoline ophthalmic causes constriction of blood vessels in the eyes. It also decreases itching and irritation of the eyes.

Zinc is used as an astringent to gently clear proteins and mucous from the outer surface of the eye.

Tetrahydrozoline-zinc ophthalmic is used to relieve redness, burning, irritation, and itching of the eyes due to airborne irritants such as pollen, dust, and ragweed.

Tetrahydrozoline-zinc ophthalmic may also be used for purposes other than those listed in this medication guide.

What should I discuss with my healthcare provider before using tetrahydrozoline-zinc ophthalmic?

Do not use tetrahydrozoline-zinc ophthalmic if you have glaucoma, except under the direction of your doctor.

Before using this medication, tell your doctor if you

• have any type of heart condition, including high blood pressure;

• take any medicines to treat a heart condition;

• have asthma;

• have diabetes; or

• have thyroid problems.

You may not be able to use tetrahydrozoline-zinc ophthalmic, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.

If you wear contact lenses, remove them before applying tetrahydrozoline-zinc ophthalmic. Ask your doctor if contact lenses can be reinserted after application of the medication. Tetrahydrozoline-zinc ophthalmic contains a preservative (benzalkonium chloride), which may cause discoloration of contact lenses.

Tetrahydrozoline-zinc ophthalmic is in the FDA pregnancy category C. This means that it is not known whether tetrahydrozoline-zinc ophthalmic will be harmful to an unborn baby. Do not use this medication without first talking to your doctor if you are pregnant. It is not known whether tetrahydrozoline passes into breast milk. Do not use tetrahydrozoline-zinc ophthalmic without first talking to your doctor if you are breast-feeding a baby.