Complete the missing words from this paragraph describing the processes of pharmacokinetics:
Pharmacokinetics is concerned with what our body does to a drug. Firstly the drug must move from where it was administered into the bloodstream, this process is called ______. Once in the bloodstream, the drug is dissolved into the plasma and moved around the body to the site it is required, called ______. ______ describes the process where the drug is converted into a form which may be more or less active or a form which is excreted readily. Eventually, the drug is removed from the body via ______.
