Patients should stop taking methadone and contact a doctor or emergency services right away if they: 1  Experience difficulty breathing or shallow breathing. 2  Feel lightheaded or faint. 3  Experience hives or a rash; swelling of the face, lips, tongue, or throat.  Feel chest 1  pain. Experience a fast or pounding heartbeat.
It makes sense. The card with the highest interest rate is usually the one that will cause you the most financial pain. The national average interest rate on a credit card is 15.2 percent, so if you bought a $1,000 refrigerator with a credit card, you'd pay a lot in interest if you took your time paying it off.
In an interest-rate environment where banks can borrow at 0.25% to 0.5%, charging credit card holders an average of 12.52%, 15.92% (Bankrate's national averages for fixed- and variable-rate credit cards), is a big yield differential between the bank's cost of funds and the credit card interest rate.