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.
Morphine sulfate is a prescription drug used to treat moderate to severe acute or chronic pain. It's sold under several brand names, including Roxanol, Kadian, and Avinza. Morphine is part of a class of drugs called opiate (narcotic) analgesics, or opioid agonists, which block the transmission of pain signals to the brain by binding to nervous system proteins called opioid receptors. Morphine is also sometimes prescribed off label to treat pain in hospitalized children. The Food and Drug Administration (FDA) first approved morphine in 1941. Multiple companies, including King Pharmaceuticals, Hospria, and Roxane Laboratories, manufacture the drug under different brand names.