rainbow pill

noun

slang
: any of a combination of pills (as of amphetamines, laxatives, and thyroid hormones) typically of different colors that were formerly taken to curb appetite and promote weight loss

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Cite this Entry

“Rainbow pill.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/rainbow%20pill. Accessed 13 Jun. 2024.

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