>importing medicine is illegal by law
Let`s say there is some medicine that can safe your life. You are forbidden by law to order it because it was produced in some other country?
It`s hard to give you any actual advice, since I have no idea what brands exists in your country. Any international brand advice would not work. I order it online and never had problems (Austrian here).
You could however look into mixing your own, if you are really hellbent on getting a better experience.
Doing some research made it clear what e.g. fleet enemas are made of: https://www.medicines.org.uk/emc/medicine/542/SPC/Fleet+Ready-to-Use+Enema/
I don`t know your background so this might not be applicable for you, however since importing is out of the question I see no way to get your hands on a foreign product.