Sheffield’s Galahad has been given a backdated two-year doping ban in 20-16 which was cut by six months.
“There isn’t any place for drug cheating in just about any sport,” Warrington told BBC Radio 5 Live’s Breakfast show.
Galahad, who is unbeaten in 26 fights, maintains he tested positive in 2014 after his brother spiked his supplements.
“He shows no remorse, which is disgraceful in my eyes and we do not need people like that at Boxing,” added Warrington, who says the nature of Boxing usually means that the outcome might be more severe than at other sports.
“It’s mantoman combat and we’re going in there to hurt one another. To use and pinch a extra little inch by cheating, especially in a sport as barbarous as Boxing, would be a disgrace.
“losing and winning, every thing like this goes outside the window. We are going in there to hurt one another of course, if you do get found afterward you should be banned for lifetime straight away.”
Warrington beat northernireland’s Carl Frampton within his first title defence in December and can be unbeaten in 28 fights.
Frampton, 32, has signed up a brand fresh multi-fight contract together with US-based Top Rank promotions and was touted as a competition for world title holders Oscar Valdez or Leo Santa Cruz.
“I expect Carl goes and wins a second world title of course when he can, I’d love nothing more to have a major unification struggle with him,” said Warrington.
“I had to carry the mandatory like I have worked hard to find that.
“I believe I’m the greatest featherweight in the world and the way I prove that’s by simply fighting other champions.”