[header] How to get potassium nitrate [title] Make your way to a local drugstore or pharmacy. [step] You'll have the most luck finding potassium nitrate supplements at a store that specializes in body building supplements, like gnc. Potassium nitrate is sometimes used for athlete enhancement. 
[title] Locate the supplements section if you've gone to a pharmacy. [step] If you're in a pharmacy or drugstore, go to the supplements section and look for a potassium nitrate supplement.