I then put the front tire on the rear, and a new tire on the front. On my roadie (700x23 Michelin Carbons) or my commuter (700x28 Specialized Armadillos), a brand new tire on the rear usually gets me about 1500-2000 miles. A 'front' tire on the rear gets a few hundred miles less.
Morphine is an opioid pain medication. An opioid is sometimes called a narcotic. Morphine is used to treat moderate to severe pain. Short-acting formulations are taken as needed for pain. The extended-release form of this medicine is for around-the-clock treatment of pain. This form of morphine is not for use on an as-needed basis for pain.
In the body, the morphine is the active drug that binds to opiate receptors to reduce the perception of pain. In brief: Very little. From a chemistry perspective, morphine is an acidic drug. When drug companies manufacture it, they distribute it as a salt. in the us, the most common salt form is morphine sulfate. Other common salt forms are morphine hydrochloride, morphine tartrate, and morphine citrate. In the body, the morphine is the active drug that binds to opiate receptors to reduce the perception of pain. In brief: Very little. From a chemistry perspective, morphine is an acidic drug.