An anime in which people/androids are turned into pills which everyone takes instead of eating All I remember is watching an anime early in the morning on Sci-Fi channel. 

I remember a scene of a young boy with a gun in a futuristic setting. He was watching a large conveyor belt with old androids and/or humans being dumped into a machine which turns them into supplement pills that everyone takes instead of eating.

It could have been a movie or an OVA, I'm not sure. Also, I am not sure when it aired on Sci-Fi, but it had to be anywhere from 2000-2006 and it was in English.
Galaxy Express 999 Adieu.

The conveyor belt is bright purple and covered with rows of bodies of non-robotic people, going towards a bright white light. The boy with the gun, Tetsuro, stands watching the process with 3 of his traveling party, as the bodies are processed. They are dropped through what looks like lines of electricity and a white orb is extracted which is contained in a tiny pill that is essentially robot food. It is referred to as the flame of life. – This link is bad quality but is on the scene. https://youtu.be/RI-b9_o3nSk?t=5523