Yes, doses is a Scrabble word!

Verb

1. Treat with an agent; add (an agent) to

2. Administer a drug to

Noun

1. A measured portion of medicine taken at any one time

2. The quantity of an active agent (substance or radiation) taken in or absorbed at any one time

3. A communicable infection transmitted by sexual intercourse or genital contact

4. Street name for lysergic acid diethylamide

5. The federal department in the United States that sets and maintains foreign policies

6. An operating system that is on a disk