Donât get blown away by that big, intimidating word! We havenât introduced word roots yet. I just wanted to demonstrate the major parts of a medical term. Letâs see how prefix and suffix changes can alter the meaning of a term without changing its central meaning by keeping the root the same.
Making the world better, one answer at a time. Benadryl, or diphenhydramine hydrochloride, when taken by mouth, works within 15 to 60 minutes. When injected through a muscle, it takes 20 to 30 minutes to work.When injected through a vein, it works rapidly. The effects of diphenhydramine hydrochloride work for approximately 4 to 8 hours, regardless of the form in which it is taken.aking the world better, one answer at a time. Benadryl, or diphenhydramine hydrochloride, when taken by mouth, works within 15 to 60 minutes. When injected through a muscle, it takes 20 to 30 minutes to work. When injected through a vein, it works rapidly.
My daughter had a reaction to ammoxicilin and it took a â¦ few days for the swelling and rash to go away. The medicine stays in your system longer then you realize. Some people need steroids to reduce swelling and an antihistamine like Benydryl.t takes only 10 to 15 minutes for the swelling to go down, but if you've left it for a long time it may take longer. DO NOT DRIVE A VEHICLE OR MACHINERY WHILE TAKING ANTIHISTIMINES. Benadryl is given in hospitals (I know because I had a reaction to a medication) and is harmless to you.