Yes, cold sweating and sudden severe weakness after taking Zaptra LS 12.5 Capsule may be a serious side effect of the medication, although it may not occur in everyone. This medication contains paroxetine and clonazepam. Clonazepam may cause drowsiness, dizziness, and weakness, while paroxetine may cause sweating and changes in energy levels, especially when starting treatment. However, sudden severe weakness with cold sweating can also occur due to other causes, such as low blood sugar, low blood pressure, or other medical conditions. If these symptoms are severe, recurrent, or accompanied by fainting, chest pain, difficulty breathing, confusion, or excessive sweating, seek medical attention promptly. Do not stop taking this medication suddenly without consulting your doctor, as stopping it abruptly may cause withdrawal symptoms or worsen anxiety. Inform your doctor about this episode, as they may adjust the dose or suggest an alternative treatment based on your condition and overall health.