No you cannot still buy Zantac.
Zantac was taken off the market and recalled in 2019 because it has been linked to cancer in people taking the Zantac for heartburn.
The ingredient in Zantac that is supposed to cause cancer is ranitidine which has been linked to cancer.
Since Zantac Heart Burn medicine has been recalled any other ranitidine products will no longer be available for prescription or OTC use in the US.
Also as a result of the Zantac Recall due to cancer the FDA is also advising consumers taking OTC ranitidine to stop taking this medication, including any unused ranitidine medication they may still have at home.
It's not worth the risk and you can even file a lawsuit against Zantac if you have taken Zantac and have gotten cancer as a result of it.