Fortunately, most sore throats are caused by a minor illness and go away without medical treatment. Several conditions can cause a sore throat. Sore throats may be caused by a viral illness, such as: 1  The common cold, the most common type of viral infection. 2  Infection of the voice box (laryngitis).3  Mononucleosis (mono, the kissing disease), a viral infection that tends to cause a persistent sore throat.ortunately, most sore throats are caused by a minor illness and go away without medical treatment. Several conditions can cause a sore throat. Sore throats may be caused by a viral illness, such as: 1  The common cold, the most common type of viral infection. 2  Infection of the voice box (laryngitis).
Common Vyvanse side effects may include: 1  dry mouth, loss of appetite, weight loss; 2  sleep problems (insomnia); 3  dizziness, feeling irritable; or.  nausea, vomiting, stomach pain, diarrhea.
Vyvanse Crash. Vyvanse should be taken at the same time every morning, with or without food. Taking it later in the day can cause insomnia. When you first start taking Vyvanse, your doctor will prescribe the lowest possible dose. If the dose isnât right, or if you forget to take your medication, you may experience an afternoon âcrashâ as the medication begins to wear off. This may cause you to feel irritable, anxious, or fatigued.