“…Centrally, the effects of dimenhydrinate resemble the antispasmodic actions of atropine. Its sedative effect, usually classified as a side effect in the ambulatory patient, has been noted to be a desirable quality in the parturient (Rotter et al, 1958). The undesirable side effects of dimenhydrinate include tinnitus, blurred vision, diplopia, insomnia, tremors, nausea, vomiting, hypotension and headache.…”