Drug injection taking drugs, injection is favoured by some people as the full effects of the drug are experienced very quickly, typically in five to ten seconds. It also bypasses first-pass metabolism in the liver, resulting in higher bioavailability and efficiency for many drugs (such as morphine or diacetylmorphine/heroin; roughly two-thirds of which is destroyed in the liver when consumed orally) than oral ingestion would. The effect is that the person gets a stronger (yet shorter-acting) effect from the same amount of the drug. Drug injection is therefore often related to substance dependence. In a recreational context, the shorter, more intense "high"
Drug-naïve (pain medication, anxiety medication, anaesthesia, etc.), as the level of habituation affects a patient's baseline resistance to the effects of such medications. Drug-naïve Drug naïvety is the physiological state of non-habituation or non-tolerance to either a specific drug or broader set of drugs related by pharmacological criteria. The term applies to the administration of psychotropics in contexts ranging from the professional medical treatment of patients to the non-medical abuse of any drug, as well as the veterinarian. In addition to not being habituated, a drug-naïve person may have never received a particular drug. The same dose could be lethal for