What if a 12 year old accidentally took 2 10mg tablets of singulair?

Did your 12 year old have the following symptoms of a Singulair overdose?

Abdominal pain (stomach pain); Drowsiness; Thirst; Headaches; Vomiting; Hyperactivity.

Treatment for a Singulair Overdose
Given that there have been so few cases of people taking too much Singulair, it is also not known what the best treatment is for a Singulair overdose. If the overdose was recent, the healthcare provider may give certain medicines or place a tube into the stomach to "pump the stomach." Treatment may also involve supportive care, which consists of treating the symptoms that occur as a result of the overdose.

Please do contact emergency and seek medical help, hope he/she is well?