Morphine tablets are strong analgesics, the use of oral medication, the use of each person’s dose varies, the specific dose should be used under the guidance of a doctor. The analgesic effect of morphine is maintained for 4 to 6 hours after a single administration. Common dosage for adults: 5-15mg once, 15-60mg a day.For patients with severe cancer pain, it should be taken orally at regular intervals, administered individually, and gradually increased in dosage, in order to provide adequate relief of cancer pain. The range of the first dose can be larger, 3 to 6 times a day. Morphine is effective in analgesia for most acute and chronic pain, such as pain from severe trauma, burns, and advanced cancer. Morphine is mainly metabolized in the liver and excreted through the kidneys, the elderly and patients with hepatic and renal insufficiency should reduce the dosage as appropriate. Morphine is contraindicated in pregnant and lactating women. Morphine is a nationally controlled drug, addictive, dependent, the drug must be prescribed by a doctor with a special prescription can be used, can not be used and abused on their own, in order to avoid the emergence of serious adverse effects.