Opichlor Tablet is an antiallergic medication used in the treatment of various allergic conditions. It provides relief from runny nose, sneezing, itching and watery eyes. Opichlor Tablet may be taken with or without food. Take it at the same time every day to get the most benefit. The dose and how often you take it depends on what you are taking it for. Your doctor will decide how much you need to improve your symptoms. You should take this medicine for as long as it is prescribed for you. In case, you have missed any doses, take the next dose as soon as you remember it. However, you should never take a double dose. Use of this medicine may cause some commons side effects such as sleepiness, nausea, dryness in the mouth, and loss of appetite. If these bother you or appear serious, let your doctor know. There may be ways of reducing or preventing them. Avoid driving or attention-seeking activity while on treatment with this medicine. To prevent dryness of mouth, drink more water, always carry sugar candy, or maintain oral hygiene. Before taking this medicine, let your doctor know if you have glaucoma or have any gastro-related issues or have asthma. Inform your doctor if you are pregnant, or breastfeeding. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works. Generally, it is advised to avoid alcohol while on treatment.