The term 'pill shooter' refers to a person who rapidly swallows pills, often without water or chewing. Some synonyms for this term include 'pill popper,' 'med head,' and 'med junkie.' Other terms that can be used are 'drug abuser,' 'medication addict,' and 'pharmaceutical fiend.' These terms can have negative connotations, so it is important to use them with consideration and sensitivity. It is essential to remember that people who struggle with an addiction to medication should be treated with empathy and compassion, and that the right support and treatment can help them overcome their dependency.