As nouns the difference between sympathomimetic and parasympathomimetics
is that sympathomimetic is any medicine with this effect while parasympathomimetics is plural of parasympathomimetic.
As an adjective sympathomimetic
is that produces effects similar to those of the sympathetic nervous system.
sympathomimetic
English
Adjective
(
en adjective)
(medicine) That produces effects similar to those of the sympathetic nervous system
Noun
(
en noun)
(medicine) Any medicine with this effect