Before using alcaftadine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: contact lens use.

After you apply this drug, your vision may become temporarily blurred. Do not drive, use machinery, or do anything that needs clear vision until you can do it safely.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

If you develop an eye infection or eye injury, or require eye surgery, ask your doctor if you should continue to use your current bottle of alcaftadine eye drops or start a new bottle.

During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.

It is unknown if this drug passes into breast milk. Consult your doctor before breastfeeding.