BRAND NAME(S): Cardura. USES: Doxazosin is used alone or with other drugs to treat high blood pressure (hypertension). Lowering high blood pressure helps prevent strokes, heart attacks, and kidney problems.
DEFINITION of 'ARM Index'. The benchmark interest rate to which an adjustable rate mortgage is tied. An adjustable rate mortgage's interest rate consists of an index value plus a margin. The index underlying the adjustable rate mortgage is variable, while the margin is constant. There are several popular indexes used for different types of adjustable rate mortgages. This is also referred to as the fully indexed interest rate.
A cap on the interest rate is a common protection for you when getting an ARM. Another protection is a cap on the payment. Interest caps refer to a legally required maximum on how much the interest rate of an ARM can increase over the life of the loan. This is expressed in two ways. First, there is an overall cap that limits the interest rate for the entire life of the loan.