A patient who has been taking butabarbital (Butisol)for several weeks reports being drowsy and having difficulty performing tasks at work most mornings.The nurse suspects that which drug effects have occurred?

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Intermediate-acting hypnotics,such as butabarbital,are useful for sustaining sleep,but patients often experience residual drowsiness in the morning,or hangover.Drug dependence occurs when patients develop a need for the drug.Tolerance refers to a reduced drug effect requiring larger amounts of drug to get the desired effect.Withdrawal occurs when stopping the drug causes symptoms that can only be alleviated by taking the drug.

A Patient Who Has Been Taking Butabarbital (Butisol)for Several Weeks