Acertain antihistamine is often prescribed for allergies. a typical dose for a 100-pound person is 25 mg every six hours. complete parts (a) and (b) below. a. following this dosage, how many 12.6 mg chewable tablets would be taken in a week? b. this antihistamine also comes in a liquid form with a concentration of 12.6 mg/9 ml. following the prescribed dosage, how much liquid antihistamine should a 100-pound person take in a week?