different between withdrawal vs methylnaltrexone

English

From withdraw +? -al.

withdrawal (countable and uncountable, plural withdrawals)

Receiving from someone's care what one has earlier entrusted to them. Usually refers to money.
A method of birth control which consists of removing the penis from the vagina before ejaculation.
A type of metabolic shock the body undergoes when a substance, usually a toxin such as heroin, to which a patient is dependent is withheld. Sometimes used with the substance as modifier.
heroin withdrawal
nicotine withdrawal
caffeine withdrawal
An act of withdrawing.
The sum of money taken from a bank account.

From methyl +? naltrexone.

methylnaltrexone (uncountable)

(pharmacology) A peripherally-acting ?-opioid antagonist that acts to reverse some of the side effects of opioid drugs such as constipation without affecting analgesia or precipitating withdrawals.

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