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.
High credit card balances can be expensive. With a 16% interest rate, a $4,000 balance will cost a consumer roughly $640 a year in interest. If the consumer pays only the minimum payment each month, it can take 20 years to pay off, and cost nearly $4,800 in interest.