Is there a way to reverse stimulant resistance? Like to prevent getting used to the medication so the effects get weaker. Besides waiting a long time to take them? 

I've heard Propranolol can help with the heart racing symptoms and other stuff, but could Propranolol help prevent getting used to the medication?

What about vitamin C. I heard some people take vitamin C because your body stops absorbing amphetamine. Is this a way to prevent getting used to it? Taking Vitamin C? 

Are there other ways that could help prevent resistance to the stimulant medications?