Understanding potential interactions between levothyroxine and weight loss injections is crucial for optimal therapeutic outcomes

Common side effects Headache Lightheadedness Drowsiness Constipation Diarrhea Fatigue Serious side effects Allergic reaction (hives, swelling, breathing difficulty) Blurred or temporary vision loss Increased risk of heart rhythm problems Serotonin syndrome (when combined with other serotonergic drugs): agitation, rapid heart rate, fever, tremor, seizures Abnormal heart rhythm (QT prolongation): chest pain, dizziness, fainting, especially with electrolyte imbalances Masked signs of bowel obstruction after surgery or chemotherapy Risk in phenylketonuria with ODTs (contains aspartame) Warnings and precautions Avoid if allergic to ondansetron or other 5-HT3 antagonists Do not combine with apomorphine (risk of severe hypotension) Discuss history of long QT syndrome, heart failure, slow heart rate, liver disease, or digestive blockage Review all prescription, OTC medications, and supplements for interactions Sources Ondansetron (Rx)
Reductions in body weight were greater with tirzepatide vs
Doctors may increase your GLP-1 dose if weight loss plateaus, hunger returns, or initial side effects subside
Importantly, these effects were consistent across key subgroups (ASCVD only, CKD only, and combined), suggesting broad applicability in high-risk populations