Norco is basically used in the case of pin relief. If you accidentally take too much Norco, it’s important to seek medical attention immediately. Overdosing on Norco can lead to severe side effects, such as difficulty breathing, loss of consciousness, seizures, and coma. Symptoms of an overdose may also include nausea, vomiting, slowed heart rate, extreme drowsiness, and confusion. Buy Norco 10 325 mg online without a prescription.