First over-the-counter Narcan arrives in stores

(CNN) - A drug that can reverse opioid overdoses is now available without a prescription.

Narcan is a nasal spray version of naloxone, and it is now for sale online or in-store at Walgreens, Rite Aid, Walmart and CVS.

Emergent Biosolutions makes Narcan and suggests a retail price of about $45 for a carton of two doses.

Almost every state already allows pharmacists to provide the medication without a prescription.

Because of its approval by the Food and Drug Administration in March, it can go on shelves and online.

Another FDA-approved nasal naloxone called Revive is scheduled to go on sale over the counter in July. A two-pack of it is set to sell for $36.

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