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.
That's because credit card interest rates can be quite high -- with the best of rates often being in the low double-digits. Instead, try to pay all or as much as possible of your outstanding credit card balance to avoid interest charges.hat's because credit card interest rates can be quite high -- with the best of rates often being in the low double-digits. Instead, try to pay all or as much as possible of your outstanding credit card balance to avoid interest charges.