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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.