Does Costco Sell Plan B? Check Your Local Pharmacy First

Costco may be able to help, but its official pages do not promise chainwide Plan B stock. What Costco does confirm is that warehouse pharmacy pickup exists, online pharmacy services do not require membership, and nonmembers can use Costco Pharmacy for prescriptions. Because Plan B One-Step is over the counter, the practical move is to call your warehouse pharmacy and ask whether it has Plan B One-Step or a levonorgestrel generic in stock today.

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Short answer

Do not rely on a blanket yes. Costco is a reasonable place to check for emergency contraception, but Costco's public help pages are about pharmacy access, not a live national Plan B inventory list. If you need it now, use Costco's pharmacy locator and call first.

What Costco officially confirms

Topic	What Costco says	What it means for you
Pharmacy access	Warehouse Pickup and Costco Pharmacy are active services.	Your local warehouse pharmacy is the place to verify same-day availability.
Membership	You do not need to be a member to use the service for pharmacy orders, and prescriptions can be purchased without membership.	If you are not a member, ask the pharmacy how they handle OTC emergency contraception at that location.
Entering for pharmacy only	Costco says staff can direct you to the pharmacy when that is your only reason for visiting.	You do not need to wander the warehouse if time matters.

What Costco does not confirm

Costco does not publish a current corporate page that says every warehouse stocks branded Plan B, and it does not publish a live OTC emergency-contraception inventory feed. That matters because warehouse stock can change quickly. If Costco cannot confirm the item by phone, treat that as unavailable for today and use the official Plan B store locator or another nearby pharmacy.

What Plan B is and when timing matters

FDA says Plan B One-Step is a single 1.5 mg levonorgestrel pill sold over the counter without age restrictions, and it works best the sooner you take it. The manufacturer FAQ and use instructions say to take it within 72 hours after unprotected sex or birth-control failure. It is not an abortion pill and will not end an existing pregnancy.

If you are past 72 hours or want another option

CDC guidance says emergency-contraception pills can still be used up to 5 days after sex, but effectiveness changes by method. The same CDC page notes that ulipristal acetate can work better than levonorgestrel on days 3 to 5, and the copper IUD is another emergency-contraception option. Planned Parenthood is a good current explainer if you need to compare options quickly.

Quick Costco checklist

Use Costco's pharmacy finder to get the right warehouse phone number.
Ask for the pharmacy directly and confirm whether they have Plan B One-Step or a levonorgestrel emergency-contraception generic in stock.
If you are not a member, ask how that warehouse handles OTC pharmacy-counter purchases before you drive over.
If they cannot confirm stock, switch immediately to the official Plan B locator or another local pharmacy.

Bottom line

Costco is worth checking, but the current source-backed answer is narrower than a simple chainwide yes. Costco officially supports pharmacy access and nonmember prescription use, while FDA confirms Plan B is OTC; what Costco does not publicly guarantee is live Plan B stock at every warehouse. Call your local Costco pharmacy first, then move on fast if they cannot confirm availability.