What is Gonak? Uses, warnings & side effects

Updated May 14, 2025  •  Published Dec 30, 2020

Gonak overview

BRAND NAMES:

  • Tears Again Mc, GenTeal, GenTeal Tears, Gonak, Goniosoft, Goniovisc, Isopto Tears, Ocusoft Retaine, Pure & Gentle, Systane

Generic Names:

  • Gonak

Uses:

  • Relieves dry or irritated eyes.

Therapeutic Classes:

  • Lubricant, Ocular, Surgical Aid, Ocular

Forms:

  • Liquid, Drop

How it’s taken:

  • Into the eye

What is Gonak used for?

What form(s) does Gonak come in?

  • Liquid

  • Drop

What are common Gonak dosages?

  • Bottle 15ML of 2.5%

Gonak images - What does Gonak look like?

  • Gonak
    15ml of 2.5% bottle

How to take Gonak

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Ophthalmic routeWash your hands with soap and water before and after using this medicine.

  • Ophthalmic routeShake the eye drops well just before each use.

  • Ophthalmic routeLie down or tilt your head back. With your index finger, pull down the lower lid of your eye to form a pocket.

  • Ophthalmic routeTo use the eye drops: Hold the dropper close to your eye with the other hand. Drop the correct number of drops into the pocket made between your lower lid and eyeball. Gently close your eyes. Place your index finger over the inner corner of your eye for 1 minute. Do not rinse or wipe the dropper or allow it to touch anything, including your eye. Put the cap on the bottle right away. Keep the bottle upright when you are not using it.

  • Single-use container: Use only 1 time. Throw away the container after you put the drops in your eyes, and then use a new container for your next dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not freeze.

  • Ophthalmic routeShake the eye drops well just before each use.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Do not freeze.

  • Ophthalmic routeLie down or tilt your head back. With your index finger, pull down the lower lid of your eye to form a pocket.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Ophthalmic routeWash your hands with soap and water before and after using this medicine.

  • Ophthalmic routeTo use the eye drops: Hold the dropper close to your eye with the other hand. Drop the correct number of drops into the pocket made between your lower lid and eyeball. Gently close your eyes. Place your index finger over the inner corner of your eye for 1 minute. Do not rinse or wipe the dropper or allow it to touch anything, including your eye. Put the cap on the bottle right away. Keep the bottle upright when you are not using it.

  • Single-use container: Use only 1 time. Throw away the container after you put the drops in your eyes, and then use a new container for your next dose.

What to do if you miss a dose of Gonak

Gonak contraindications - Who shouldn't take Gonak?

  • This medicine is generally considered safe for most people. Talk to your doctor if you have concerns.

Gonak warnings

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Tell your doctor if you are pregnant or breastfeeding.

  • Do not use this medicine if it has changed color or looks cloudy.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Ophthalmic routeIf you hurt your eye, develop an eye infection, or need to have eye surgery, talk with your doctor right away. You may need to change your medicine or stop using it.

Gonak interactions & what to avoid when taking Gonak

  • Tell your doctor if you are pregnant or breastfeeding.

  • Do not use this medicine if it has changed color or looks cloudy.

  • Call your doctor if your symptoms do not improve or if they get worse.

  • Ophthalmic routeIf you hurt your eye, develop an eye infection, or need to have eye surgery, talk with your doctor right away. You may need to change your medicine or stop using it.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Gonak side effects - How does Gonak make you feel?

Serious Side Effects

  • Vision changes

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Eye pain, redness, or irritation