what can i put down my sink drain to make it drain better?

1. 
   

 

1. Pour baking soda down the drain. Next, run the vinegar through the sink. Put the drain plug on the drain as soon as possible, and then wait until the fizzing stops before removing it. Let it to rest for 30 minutes after it has ceased.
2.  Bring a kettle of water to a boil after 30 minutes. Remove the drain plug once the water has reached a rolling boil, then pour the hot water down the drain. Any obstructions will be removed by the hot water, vinegar, and baking soda mixture, clearing your drain pipe of them.

Your drain ought to be fully functional once more!