 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  taking? Enter your medication into the WebMD interaction checker Check InteractionThe overdose of Zaditor Ophthalmic (Eye): This medicine may be harmful if swallowed. If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.  Notes Do not share this medication with others. Avoid allergens (such as pollen, animal dander) and other triggering factors (such as irritants). Cold compresses and lubricating eye drops may decrease eye irritation.  Missed Dose If you are using this medication on a regular schedule and miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Use your next dose at the regular time. Do not double the dose to catch up.  Storage Store at room temperature. If you are using the single-dose container, discard it after use. Discard unused single-dose containers 4 weeks after you first open the blister pack (or 3 months after opening if you store them in the original carton box </s>