Both the time it will take for a drug to be effective, and the time it will take for it to leave the body completely, depend on a drug's half-life. The half-life is the amount of time necessary for the concentration of the drug in the bloodstream of the body to be reduced by one-half. The time it will take for a drug to reach a steady state, or full effectiveness, in the system is based on that half-life.
Definition. An adverb is the part of speech (or word class) that's primarily used to modify a verb, adjective, or other adverb. Adverbs can also modify prepositional phrases, subordinate clauses, and complete sentences. Adjective: adverbial. Positions of an Adverb.
adverb. n. 1. (Grammar). a. a word or group of words that serves to modify a whole sentence, a verb, another adverb, or an adjective; for example, probably, easily, very, and happily respectively in the sentence They could probably easily envy the very happily married couple.