Concurrent Use of Clonidine With Lisdexamfetamine (Vyvanse)
Concurrent use is permitted when clonidine is used for ADHD as adjunctive therapy to psychostimulants, including CNS stimulants used for ADHD. [1] Clonidine can reduce heart rate and blood pressure, so concurrent use requires baseline and follow-up vital-sign monitoring. [1]
Medication Selection Algorithm
- Clonidine hydrochloride extended-release tablets are indicated for ADHD as monotherapy and as adjunctive therapy to stimulant medications. [1]
- Lisdexamfetamine is a CNS stimulant used for ADHD and requires monitoring of blood pressure and heart rate during therapy. [2]
Key Evidence Supporting This Recommendation
- Clonidine hydrochloride extended-release tablets have an ADHD clinical study design that evaluated clonidine as adjunctive therapy to psychostimulants in children and adolescents. [1]
- Clonidine hydrochloride extended-release tablets have dose-related effects on systolic blood pressure and heart rate in pediatric studies, which supports the need for monitoring when used with other agents affecting cardiovascular parameters. [1]
Monotherapy Versus Combination Therapy
- Clonidine hydrochloride extended-release tablets are labeled for monotherapy or as adjunctive therapy to stimulant medications, so combination therapy is an approved treatment structure for ADHD. [1]
- Lisdexamfetamine is continued as the stimulant component of ADHD pharmacotherapy when combination therapy is selected. [1], [2]
Initiation Thresholds and Indications
- Clonidine hydrochloride extended-release tablets should be initiated and titrated with individualized dosing. [1]
- Baseline measurement of heart rate and blood pressure is recommended before starting clonidine, after dose increases, and periodically while on therapy. [1]
- Baseline and ongoing blood pressure and heart rate monitoring is also recommended during lisdexamfetamine therapy. [2]
Common Pitfalls to Avoid
- Abrupt discontinuation of clonidine hydrochloride extended-release tablets can cause rebound hypertension and related withdrawal symptoms. [1]
- Concomitant use with drugs that can reduce blood pressure or heart rate can increase risk, so vital-sign monitoring and dose adjustment are required. [1]
- Clonidine should be used cautiously in patients at risk for hypotension, bradycardia, syncope, or conduction abnormalities because clonidine can cause dose-related decreases in blood pressure and heart rate. [1]
Target Blood Pressure and Heart Rate Goals
- Specific numeric targets for blood pressure or heart rate are not provided in the clonidine or lisdexamfetamine prescribing information excerpts reviewed here. [1], [2]
- Clinical monitoring aims to detect clinically significant hypotension and bradycardia by measuring blood pressure and heart rate prior to initiation, after dose increases, and periodically during therapy for clonidine. [1]
- Clinical monitoring aims to detect clinically significant cardiovascular effects by monitoring blood pressure and heart rate during lisdexamfetamine therapy. [2]