This page explains what happens if Levothyroxine and Salbutamol are taken together, according to official sources.
Potentiated sympathomimetic effects and tachycardia
Concurrent use of salbutamol with levothyroxine synergistically enhances cardiovascular responsiveness, provoking palpitations, tremors, and hypertension.
Use the lowest effective salbutamol inhaler dose. Evaluate patients for excessive tachycardia or tremor, especially during exacerbations.
Last updated: Sep 25, 2026
Before changing or stopping any medicine, ask your doctor or pharmacist. Never stop your medicine on your own.