My partner whom of which suffers from severe depression recently swallowed 19000mg of Metformin... He became quite nauseous quickly and soon vomited up a small sum of what he took, he continued to vomit throughout the night. He has since been experiencing Nausea and tingling down his arms. The overdose was 5 days ago... I'm wondering if this could have any long-term ramifications.
Please note that he is NOT diabetic.