For the record, the blog post on nitro pills was not true and the TSA website still reflects the fact that nitroglycerine pills, like any med, can be confiscated at any time because the screener always has the final say.

Also posted elsewhere in this forum is the regulation governing certain substances, the regulation that was cited as justification for confiscating my nitroglycerine pills. It's very strange that the regulation was not cited in the blog post or anywhere on the TSA website. It may be an FAA regulation, I don't know. It is, however, very real and it does apply at the checkpoint.