Schmall, Vicki L.; Leno, Janice; Oregon State University. Extension Service; Washington State University. Cooperative Extension; University of Idaho. Cooperative Extension System; United States. Dept. of Agriculture; Pacific Northwest Cooperative Extension ([Corvallis, Or.] :|bOregon State University Extension Service ; [Olympia, Wash.] : Washington State University Cooperative Extension ; [Moscow, Idaho] : University of Idaho Cooperative Extension System ; [Washington, D.C.] : U.S. Dept. of Agriculture, 1993-09)
The action of a medicine may be less predictable in an older person and its intended action may be altered. Sometimes the effect is insignificant; other times it can be dramatic.