antasthenic

ant·as·then·ic

(ant'as-then'ik), 1. Strengthening or invigorating. 2. An agent possessing such qualities. [anti- + G. astheneia, weakness]

antasthenic

(ant″as-then′ik) [ anti- + -asthen(eia) + -ic] Relieving weakness; strengthening, invigorating.