tonic

[1]	stimulant , tonic water , quinine water , restorative , invigorant , boost , refresher , (Technical) roborant , analeptic , (Colloq) bracer , pick-me-up , pick-up , shot in the arm , (US) picker-upper
[2]	pop , soda , soda pop , soda water
[3]	keynote
[4]	restorative

adj.

[1]	stimulant , stimulating , restorative , invigorating , fortifying , bracing , strengthening , reviving , enlivening , refreshing , (Technical) analeptic , roborant
[2]	tonal
[3]	accented
[4]	bracing , brisk , fresh , refreshing , refreshful