Drug Uses CLARITIN is very useful in treating sneezing, runny nose, stuffiness, itching, and tearing eyes, caused by hay fever or other upper respiratory allergies. It is also effective in treating the swollen, red, itchy patches of skin caused by hives. Usage Following the dosage instructions of your doctor is the best way to use any medication. If you are unsure or do not remember the instructions then you may read the medicine label for more detailed information. It is very important that you complete the dosage schedule and do not interrupt it in between without seeking prior consultation from your doctor. Taking your medication at the same time each day is a tried and tested method to avoid missing any doses. Drug Class and Mechanism CLARITIN falls under antihistamine and it works by blocking the action of histamine, a natural substance in your body that is released by your immune system during an allergic reaction. Missed Dose Despite your best attempts at remembering, if you still miss out on a dose, then take it as soon as you remember about it. But keep in mind that you will have to adjust your next dose by spacing it out by 4 to 5 hours. If this is not possible, then the best thing to do would be to skip the missed dose and continue with your normal dosage schedule. Never try to compensate for the missed dose by taking a double dose together. It may cause adverse effects. Storage Store CLARITIN at room temperature (read medicine label if unsure). Always keep it in a cool dark place that is not directly exposed to sources of heat or moisture and sunlight. Protect it from kids and pets.