How many Nitrostat (Nitroglycerin) pills can you take in one day?

I instruct patients if they get chest pain, they should sit down and rest. If the pain does not go away then take a nitro under your tongue wait 5 minutes if the pain is not gone you can take another nitro, wait 5 minutes if you take the third nitro then you should go to the ER. So unless directly instructed by your physician you should follow these guidelines.