Just as it does with food, the body tries to chemically break down medicines as soon as they enter the body. Most drugs taken by mouth enter the stomach or small intestine and then are sent to the liver. The liver contains protein molecules called enzymes that chemically modify drugs and other non-food substances.
Pluto: The Farthest Planet (Usually) Pluto, the ninth planet in our solar system, was not discovered until 1930 and remains a very difficult world to observe because it's so far away. At an average distance of 2.7 billion miles from the Earth, Pluto is a dim speck of light in even the largest of our telescopes. It takes almost 249 years to make one swing around the Sun, in a long looping orbit that takes it above and below the path of the other planets.
With Pluto out of the race, the farthest real planet from the Sun is Neptune. Neptune and its neighbor, Uranus, are known as the ice giants, since they are composed of huge amounts of rock and water, ammonia, and methane ice crystals. Uranus is, on average, 1.79 billion miles from the Sun, while Neptune is, on average, 2.8 billion miles from the Sun. Being more than a billion more miles away from the Sun and receiving only about 40% of the solar radiation received by Uranus, you'd think Neptune would be much colder than Uranus.