What is this medication for?
Alcaftadine belongs to a group of medications called antihistamines. Alcaftadine eye drops are used to treat the signs and symptoms of a condition called allergic conjunctivitis (an allergic reaction affecting the eyes). Signs and symptoms include itchy eyes, red eyes, tearing, and swelling of the eyes or eyelids.
Alcaftadine works by blocking histamine, a substance released by the body during an allergic reaction. It also works by preventing the release of natural chemicals from cells in the body (mast cells) involved in an allergic reaction. Alcaftadine eye drops work within a few minutes after using.
Your doctor may have suggested this medication for conditions other than those listed here. As well, some forms of this medication may not be used for all of the conditions discussed here. If you are not sure why you are being given this medication, speak to your doctor. Do not stop using this medication without consulting your doctor.
Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to use this medication if their doctor has not prescribed it.
What form(s) does this medication come in?
Lastacaft is available as:
Some medications may have other generic brands available. Always ask your doctor or pharmacist about the safety of switching between brands of the same medication.
How should I use this medication?
The usual recommended dose for adults and children over 2 years old is 1 drop in each eye once daily.
Before using the eye drops, wash your hands thoroughly. Follow the instructions from your doctor or pharmacist on how to use the eye drops.
If you wear contact lenses, remove them before using this medication. You can reinsert your contact lenses after 10 minutes following application of this medication. Do not allow the eye dropper to touch your eyelids, surrounding areas, or any surface. This could contaminate the dropper and lead to an eye infection. Keep the bottle tightly closed when you are not using it.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are using the medication without consulting your doctor.
It is important to use this medication exactly as prescribed by your doctor. If you miss a dose, instil it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not instil a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store this medication at room temperature, protect it from light and moisture, and keep it out of the reach of children.
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Who should NOT take this medication?
Alcaftadine eye drops should not be used by anyone who is allergic to alcaftadine or to any of ingredients of the medication.