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Lastacaft
Lastacaft is the brand name for alcaftadine, an antihistamine eye drop used to treat itchy eyes caused by allergic conjunctivitis. It works by blocking histamine receptors in the eyes, reducing the symptoms of itching, redness, and irritation caused by allergens such as pollen, dust, and pet dander. Lastacaft is typically prescribed for once-daily use and provides relief within minutes of application.
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Frequently Asked Questions
How long does it take for Lastacaft to start working?
Lastacaft typically begins relieving symptoms within minutes of application, with effects lasting for 24 hours.
Can I use Lastacaft if I wear contact lenses?
Yes, but you should remove contact lenses before applying Lastacaft and wait at least 10 minutes before reinserting them.
Can I use Lastacaft more than once a day if needed?
No, Lastacaft is designed for once-daily use. If your symptoms persist, consult your healthcare provider for advice on adjusting your treatment.
Is Lastacaft safe for children?
Yes, Lastacaft is approved for use in children aged 2 years and older for the treatment of allergic conjunctivitis.
Can I use Lastacaft for conditions other than allergies?
Lastacaft is specifically indicated for allergic conjunctivitis. It should not be used for other eye conditions, such as infections, without consulting your doctor.
Comprehensive Drug Guide
How Does Lastacaft Work?
Lastacaft works by blocking H1 histamine receptors in the eyes, preventing the release of histamine, which is a substance responsible for allergic symptoms such as itching and inflammation. By inhibiting histamine activity, Lastacaft reduces itchy eyes and other symptoms of allergic conjunctivitis. It also prevents further irritation by acting as a mast cell stabilizer, reducing the release of additional allergic mediators.
Common Dosages
- One drop in each affected eye once daily.
Typical Dosing
- For allergic conjunctivitis: The usual dose is one drop in each affected eye once daily. The relief provided by Lastacaft typically lasts for 24 hours.
Typical Dosing
FDA Approved Indications
- Treatment of ocular itching associated with allergic conjunctivitis in patients aged 2 years and older.
Who Shouldn't Take Lastacaft?
- Known hypersensitivity or allergy to alcaftadine or any components of the formulation.
Advice From The Pharmacist
- Use one drop per eye once daily, regardless of whether symptoms are present. Lastacaft is designed to prevent and treat symptoms.
- Do not touch the tip of the dropper to any surface, including your eye, to avoid contamination.
- Remove contact lenses before applying Lastacaft, and wait at least 10 minutes before reinserting them.
- If you are using other eye drops, wait 5 to 10 minutes between applications of each product to prevent dilution or interference.
- Store Lastacaft at room temperature, away from moisture and heat. Keep the bottle tightly closed when not in use.
Side Effects of Lastacaft
Common Side Effects
- Mild eye irritation or burning
- Redness
- Headache
- Runny nose
Uncommon/Severe Side Effects
- Severe allergic reactions (e.g., swelling of the eyes, face, or throat, difficulty breathing)
Risks and Warnings of Lastacaft
- Contact Lens Wearers: Contact lenses should be removed before using Lastacaft, as the preservative in the solution may be absorbed by soft lenses. Lenses can be reinserted 10 minutes after application.
- Eye Infections: Avoid using Lastacaft if you suspect an eye infection, as antihistamines may not be appropriate for treating infections. If you develop eye pain, blurred vision, or visual changes, contact your doctor.
- Hypersensitivity Reactions: Although rare, some individuals may develop an allergic reaction to the medication. If you experience swelling, difficulty breathing, or hives, seek medical attention immediately.
Interactions with Lastacaft
Common Drug Interactions
- Lastacaft is generally safe to use alongside other medications, including systemic antihistamines. However, always inform your healthcare provider if you are using other ophthalmic products or have any underlying eye conditions.
Alternatives to Lastacaft
- Olopatadine (Patanol, Pataday): Another antihistamine eye drop used for allergic conjunctivitis, available in various formulations.
- Ketotifen (Zaditor, Alaway): An over-the-counter antihistamine eye drop for itchy eyes caused by allergies.
- Azelastine (Optivar): A prescription antihistamine eye drop used to relieve allergy-related eye itching.
