I

Indomethacine:

is a drug that reduces inflammation and is prescribed for pain.

Internal Organs:

are the organs such as the stomach, gut and liver that are located inside (internal) the body.

Intervertebral Disc:

is a disc between two vertebrae and is a kind of joint between these two vertebrae. This disc looks a little like a bicycle tyre with an inner and outer tyre. The central part of the intervertebral disc regulates the pressure within the disc.