There are some medicine to help dieting that would control the feeling of hunger. Is using those kinds of dieting pills allowed when fasting?
Allah doesn't want us to fast for the sake of keeping stomach empty or does He? The essence of fast is in giving up your needs/desires for Allah and bearing the effort of trying to over come them.
Narrated Abu Huraira: Allah's Apostle said, "Whoever observes fasts during the month of Ramadan out of sincere faith, and hoping to attain Allah's rewards, then all his past sins will be forgiven."
Just like taking performance enhancement drugs in a game is cheating similarly taking such a drug for fasting would be cheating with Allah and therefore the 'sincerity' part will be gone.
And Allah (S.W.T) knows best.
Yes, it is.
According to Jafari Fiqh
eating hunger control pills during fasting time is not allowed but eating them before morning Azan is not Haram and one can eat it.
This was Fiqh answer (Halal/Haram).
But morally and spiritually it is better to feel hungry to understand poor people more and to feel closeness to God and to remember God more.
Official website of Grand Ayatollah Makarem Shirazi (online answering by Chat)