Naloxone, also known as Narcan, is a powerful drug that acts as an opioid antagonist and quickly reverses the effects of an opiate overdose. It saves lives! Opiate overdose causes the body to fail in respiratory function. Naloxone acts as a heroin overdose antidote by blocking the receptors in the brain that opiates bind to, interfering with the effect of the opiates.
When someone is drinking large amounts of alcohol or putting drugs in their body, there are mental effects and physiological adaptations by the body. Alcohol or the drug sparks responses within the body that were previously created by other materials that are natural. Over time, the body produces less of the natural materials and starts to depend more and more on the booze or drugs. Because all of us have different metabolisms and DNA that is distinct, the period of time before these changes happen fluctuates broadly.