text: On the other hand, in patients with a mean serum carvedilol level (Cmin) of less than 2.5 nmol/l up to 2 weeks after the start of<< carvedilol >> therapy, the degree of reduction in the [[ BNP ]] value after the 3rd month was significantly larger, relative to the patient group with Cmin over 2.5 nmol/l.