The generic name of Benadryl is Diphenhydramine while the generic name of Zyrtec is Cetirizine.Zyrtec is a second-generation antihistamine while Benadryl is a first-generation antihistamine You can purchase Zyrtec over the counter, and most dogs vigora high power capsule are capable of handling this medication without issue. MEGACE® (megestrol acetate, USP) Oral Suspension contains megestrol acetate, a synthetic derivative of the naturally occurring steroid hormone, progesterone.Megestrol acetate is a white, crystalline solid chemically designated as 17α-(acetyloxy)-6-methylpregna-4,6-diene-3,20-dione.. The most common side effects in dogs include increased thirst, urination, and appetite. Respiratory Depression in Children The combination of promethazine hydrochloride and codeine phosphate is contraindicated in pediatric patients less than 6 years of age. Telef(506) 296.0913. Does Claritin cause headaches? Sign Up The intervention was an extended trans-sternal thymectomy in order to get as much thymic tissue as possible. Walsh, in Side Effects of Drugs Annual, 2011 Drug overdose. is a practicing rheumatologist in Central New Jersey. So as long as you're not a veterinarian writing out the prescription or telling your vet what medicine your kitty is on, you can just think of it as prednisone if you. Why doesn't my OTC Zyrtec work, when my prescription worked very well? Cyproheptadine (Periactin) is used to relive allergic symptoms. It is used to prevent and control nausea and vomiting during and after surgery. STUDY. If your allergies are really bad right now, try taking a shower, and staying inside. How to Care for a Sinus Headache.