Call your doctor if you experience: vomiting or diarrhea, fever, or unusually excessive sweating. You are at higher risk of dehydration, which may lead to, severe low blood pressure or severe electrolyte imbalance.
Get emergency attention if you suspect an allergic reaction, and if you experience signs of low sodium, rapid weight gain, swelling in ankles and feet, convulsions, or nasal problems. Low sodium may appear as headaches, drowsiness, confusion, vomiting, restlessness, weakness, muscle pain, and loss of appetite.
Other common side effects include: nasal discomfort, sore throat, cough, dizziness, increased blood pressure, back pain, headaches, flushing, insomnia, itchy eyes, and light sensitivity.
Not all possible side effects and drug interactions are provided here.