Many factors must be considered relative to the effect of drug action on the body. ... Additive effect is the term used when two or more drugs are taken at the same... [PDF]http://ir.lib.csmu.edu.tw:8080/ir/bitstream/3...
When two or more drugs are given concurrently that produce the same biological effect, the resulting effect generally follows one of three patterns--additive effect... http://wings.buffalo.edu/aru/PSY40208.htm...