In Summary. Common side effects of Vyvanse include: insomnia and irritability. Other side effects include: dizziness, weight loss, and xerostomia. See below for a comprehensive list of adverse effects. For the Consumer. Applies to lisdexamfetamine: oral capsule.
Examples of involuntary weight loss include the weight loss associated with cancer, malabsorption (such as from chronic diarrheal illnesses), and chronic inflammation (such as with rheumatoid arthritis).eight loss: Weight loss is a decrease in body weight resulting from either voluntary (diet, exercise) or involuntary (illness) circumstances.
When to call your doctor. If you suddenly gain weight, call your doctor. Your doctor may tell you how much weight to watch out for. But in general, call your doctor if you gain 3 lb (1.4 kg) or more in 2 to 3 days. If you are gaining weight slowly, tell your doctor on your next visit.udden weight gain may mean that fluid is building up in your body because your heart failure is getting worse. Knowing how your weight is changing helps you manage your heart failure. It's not hard to track your weight.