How Long Does Darvocet Stay in Your System

What is Darvocet

Darvocet is a narcotic pain reliever, with the active ingredients propoxyphene and acetaminophen. It is mainly used in the treatment of mild to moderate pain.

Ingredient	Elimination Half-life Duration	Stays in the system for
Propoxyphene	6-12 hours But metabolite norpropoxyphene  has a half-life of 30-36 hours	Propoxyphene – 33-66 hours, Norpropoxyphene – 165-198 hours
Acetaminophen	1-4 hours	5.5-22 hours

There are, however, certain variables that may increase or decrease the time required for Darvocet elimination, they are:

• Age
• Body Mass
• Liver and kidney conditions
• Urinary pH
• Duration of administration