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.
The lower your utilization rate for each card and combined, the better for your credit score. In fact, a study by FICO found that consumers with the highest credit scores (above 785) used, on average, only 7 percent of their available credit on credit cards. That means they charge only $350 on a credit card with a $5,000 credit limit. Or, just $1,400 on several credit cards with combined limits of $20,000.