loss of effectiveness; expiration

to lose effectiveness; to become expired

time limit, deadline, cutoff / time frame

A substance with mystical properties, especially one that has an effect on the body, health, or lifespan.

merely; no more than

negative of 過ぎる (sugiru) [ichidan]

to pass by, to pass through; to go beyond / to elapse; to exceed / (auxiliary) too, too much (verb)

over-, too much / after, past

past, after / too, too much / in/to excess, overdoing something

not excessive; not too much / not beyond; not over