Wiktionary
take a pill
vb. (context colloquial often in imperative English) To change one's attitude or expressed feeling.
Usage examples of "take a pill".
When they land, I'll take a pill, and turn the want-generator on them.
Once she'd put the phone down on him the previous night she'd regretted her skittish way with him, and after a heart-to-heart with Marlin in which she'd told him she wanted to go back to England, and he'd replied that it would all seem different in the morning and why didn't she just take a pill and lie down, she'd decided to call him back.