Diphenhydramine hydrochloride

Definition: Diphenhydramine, sold under the brand name Benadryl among others, is an antihistamine and sedative. Although generally considered sedating, diphenhydramine can cause paradoxical central nervous system stimulation in some individuals, particularly at higher doses. This may manifest as agitation, anxiety, or restlessness rather than sedation. source: Wikipedia

ID
19510001
Name
Diphenhydramine hydrochloride