Most people will be familiar with this myth. If anything drugs increase the resistance of candida. Candida is very adaptive to drugs that try to kill it off. Most research being done today is to find new drugs for fighting candida, because candida has developed resistance to all other antifungals. Antifungal drugs come with many side effects, which include destruction of liver tissue.
The better choice is to use natural antifungals that aren't toxic to the body. Most every plant on the earth has developed some form of antifungal mechanism in order to avoid being destroyed by some 1.5-2.5 million fungus that inhabit the Earth. There is plenty of research that shows the antifungal quality of many natural substances found in nature.