What is Lastacaft: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Lastacaft overview

BRAND NAMES:

  • Lastacaft

Generic Names:

  • Lastacaft

Uses:

  • Prevents itching of the eye caused by allergic conjunctivitis (pink eye).

Therapeutic Classes:

  • Ophthalmologic Agent

Forms:

  • Liquid, Drop

How it’s taken:

  • Into the eye

What is Lastacaft used for?

What form(s) does Lastacaft come in

  • Liquid

  • Drop

What are common Lastacaft doses?

  • Bottle 3ML of 0.25%

Common Lastacaft prescriptions

  • Lastacaft
    3ml of 0.25% bottle

  • Lastacaft
    5ml of 0.25% bottle

How to take Lastacaft

  • Use this medicine as directed.

  • If you are using more than one type of eye drop medicine, wait at least 5 minutes before you put another eye drop in the same eye.

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

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

  • Contact lenses: Remove contacts before you put the drops in your eyes. Wait at least 10 minutes before you put your contacts back in. Do not wear contacts if your eyes are red.

  • 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.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Use this medicine as directed.

  • 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.

  • If you are using more than one type of eye drop medicine, wait at least 5 minutes before you put another eye drop in the same eye.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

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

  • Contact lenses: Remove contacts before you put the drops in your eyes. Wait at least 10 minutes before you put your contacts back in. Do not wear contacts if your eyes are red.

What to do if you miss a dose of Lastacaft

Lastacaft contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to alcaftadine.

Lastacaft 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.

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

Lastacaft interactions

  • Tell your doctor if you are pregnant or breastfeeding.

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

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

Lastacaft side effects

Serious Side Effects

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

  • Burning, stinging, redness, itching, or other eye irritation