Physical dependence

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Physical dependence is a term used in medicine: If a drug is taken regularly, a certain level of tolerance may have developed. Abruptly stopping to use the drug will cause drug withdrawal symptoms. If the drug has been taken for a longer period of time, or the dosage was higher, the withdrawal symptoms will be more severe. Well known drugs with withdrawal symptoms include opioids, alcohol, and may of the drugs knownn as neuroleptics.