Kmart has teamed up with March of Dimes for a pretty unique giveaway program. Through May 1, the retailer will be giving away a free month’s supply of folic acid to pregnant mothers.

To score the free folic acid (you might call it Vitamin B9, if that’s more your thing), you’ll need to be A) Pregnant and B) Holding a prescription from your doctor. You’ll also need to go to a Kmart with a pharmacy.

For a list of Kmarts with pharmacies, go to their website.

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