WordNet sense 1 (a medicine that strengthens and invigorates):

tonic

WordNet sense 2 (a device for treating injury or disease):

corrective

WordNet sense 3 (tending to impart new life and vigor to):

renewing, revitalising, revitalizing, reviving

WordNet sense 4 (imparting strength and vitality):

invigorating

WordNet sense 5 (promoting recuperation):

recuperative

WordNet sense 6 (conducive to good health of body or mind):

healthful