depressant
Mickey Finn
allaying
anodyne
anxiolytic
assuaging
assuasive
ataractic
ataraxic
balm
barbiturate
calmant
calmative
calming
depressing
downer
hypnotic
lenitive
narcotic
opiate
pacifier
relaxing
sleep-inducing
sleeping
sleeping pill
soothing
soporific
tranquilizer
analgesic
anesthetic
antibiotic
antidote
antiinflammatory
antitumor
aphrodisiac
deobstruent
diazepam
diuretic
insulin
laxative
medication
morphine
painkiller
penicillin
quinine
stimulant
tonic
tranquilizers
exciting
stimulating