 <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] intments to allow the drops to enter the eye. Use this medication regularly to get the most benefit from it. To help you remember, use it at the same time each day. Do not use this product if it becomes contaminated (for example, drops turn a dark color). Using contaminated eye medication can cause infection, serious damage to the eye, and loss of vision. Contact your doctor or pharmacist for more information. Tell your doctor if your condition does not improve in a few days or if it worsens.The side effects of Lastacaft Once Daily Relief Ophthalmic (Eye): Mild and temporary burning/stinging of the eyes may occur when you apply this medication. If this effect lasts or gets worse, tell your doctor or pharmacist promptly. If your doctor has prescribed this medication, remember that your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a </s>