40 million Americans take three or more vitamins a day, yet both the pill bottles and the way we buy them haven’t changed in decades. Well they’re about to, thanks to new Y Combinator startup Zen Health and its customized vitamin pack delivery service Zenamins. Punch in what you already take and answer a few questions and Zenamins will send you a personalized pill pack. Staying fit is tough, but Zen Health wants to make the medicine go down easy.

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