Vicodin withdrawal symptoms can be extremely uncomfortable and painful, similar to that of heroin withdrawal.
Opiate withdrawal symptoms are stronger approximately 24-72 hours after they begin and generally dissipate within 7-10 days.
Percocet addicted individuals will eventually find that they need to use the drug to feel normal, and will exhibit drug-seeking behavior and often become preoccupied with thoughts about using and obtaining the drug.
Because of the painful physical and mental consequences of cocaine withdrawal, relapsing back into cocaine abuse is very common because the user feels that using cocaine to avoid withdrawal will work.