Shroff said
However, many people notice they have more when they feel anxious or stressed or use caffeine
You feel drained, achy, and completely miserable
While the changes in heart rate were minimal, this could indicate improved myocardial efficiency, potentially enhancing the cardiovascular systems ability to meet the increased exercise demands
It can temporarily cause menstrual irregularities due to hormonal changes associated with weight loss and insulin sensitivity

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)