Amoxapine and Protriptyline interaction
Amoxapine and Protriptyline: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.
Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.
What the FDA labels say
From the Protriptyline (Protriptyline Hydrochloride) label · effective 2023-07-25
Anyone considering the use of protriptyline hydrochloride or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need.
Tachycardia and postural hypotension may occur more frequently with protriptyline than with other antidepressant drugs.
Protriptyline may enhance the response to alcohol and the effects of barbiturates and other CNS depressants.
The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine; cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics, propafenone and flecainide).
From the Amoxapine label · effective 2024-10-16
Anyone considering the use of amoxapine or any other antidepressant in a child, adolescent, or young adult must balance this risk with the clinical need.
Amoxapine may enhance the response to alcohol and the effects of barbiturates and other CNS depressants.
The drugs that inhibit cytochrome P450 2D6 include some that are not metabolized by the enzyme (quinidine, cimetidine) and many that are substrates for P450 2D6 (many other antidepressants, phenothiazines, and the Type 1C antiarrhythmics propafenone and flecainide).
Taking more than these two? Interactions stack. Check your whole list at once; it stays in your browser.
Open in the checkerNot medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.