While you cannot buy it directly off the shelf, you can obtain it through by following these steps:

In the United States, you buy brand-name Viagra or its generic version, sildenafil, over the counter at Walmart . These are prescription-only medications that must be dispensed by a licensed pharmacist after you provide a valid prescription from a healthcare provider. How to Get Viagra at Walmart

: Once you have a prescription, you can have it sent to a local Walmart Pharmacy or upload it to their online pharmacy service.