Once a drug has been approved for marketing for a certain use, experience may show that it is also useful for other medical problems. Although this use is not included in product labeling, cetirizine and loratadine are using in certain diseaseds with asthma together with asthma medication. The antihistamine is using before and during exposure to substances that cause reactions, to prevent or reduce bronchospasm - wheezing or difficulty in breathing.
Cyproheptadine is using as an appetite stimulant, in adults and children
Cyproheptadine is using for treat of vascular headaches.
Other than the above information, there is no additional information relating to How to Use, precautions, or side effects for this use.