Which term is evident when a person who is physically dependent on one drug can lessen withdrawal symptoms by using other drugs from the same or similar classification?

Which term is evident when a person who is physically dependent on one drug can lessen withdrawal symptoms by using other drugs from the same or similar classification?

• A. Cross-dependence
• B. Tolerance
• C. Metabolic tolerance
• D. Cross-tolerance

Answer: (A)

Cross-dependence is the idea that withdrawal symptoms from one drug can be mitigated by using another drug from the same or a closely related class. This happens because the two drugs share similar actions at the same receptors or pathways, so the substitute can partially replace the function of the original drug and blunt the withdrawal experience. A common example is using methadone to relieve heroin withdrawal, since both are opioids and operate on the same receptors. This is different from cross-tolerance, which describes tolerance transferring between drugs due to shared adaptations, not directly about easing withdrawal symptoms.

Cross-dependence is the idea that withdrawal symptoms from one drug can be mitigated by using another drug from the same or a closely related class. This happens because the two drugs share similar actions at the same receptors or pathways, so the substitute can partially replace the function of the original drug and blunt the withdrawal experience. A common example is using methadone to relieve heroin withdrawal, since both are opioids and operate on the same receptors. This is different from cross-tolerance, which describes tolerance transferring between drugs due to shared adaptations, not directly about easing withdrawal symptoms.