Most pharmacies selling Rx drugs
without a prescription only accept Crypto/Cash/Check payment options for their safety. This operation is
illegal, and authorities will prosecute them - not you, the buyer - once they've caught on.
The pharmacy I ordered from previously offered PayPal, Zelle, OpenPay, and other mainstream payment methods, but those avenues were shut down. Whether by choice or force, I do not know. If you're adamant about using CC, I see 4 pharmacies listed in
OpenPay's FAQ as participant stores. Feel free to contact them, but I cannot guarantee their stock or legitimacy.
If you change your mind, I can recommend 2 pharmacies that accept crypto. Buying BTC can be easy or difficult, but be aware that transaction fees for convenience (CC to 3rd party to Wallet) can be
20% of your total for small purchases. If you purchase BTC through an exchange such as Coinbase/Binance and transfer to a wallet, your fees will be minimal.