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.
Cushing's Syndrome. Cushing's syndrome is a hormonal disorder that can cause sudden weight gain. According to the National Institute of Diabetes and Digestive and Kidney Diseases, or NIDDK, Cushing's syndrome, also known as hypercortisolism, is caused by prolonged exposure of your tissues to the hormone cortisol.olycystic ovary syndrome can cause sudden weight gain. MayoClinic.com states that PCOS is the most common hormonal disorder affecting women of reproductive age. PCOS is named for the appearance of the ovaries in most, but not all, women with this condition.