Final answer:
Experienced drug users can differentiate between the effects of methamphetamines and cocaine based on the route of administration; however, when administered intravenously, the highs are less distinguishable due to the rapid onset. Both drugs enhance dopamine activity leading to a euphoric high, but they also carry significant health risks.
Step-by-step explanation:
In laboratory conditions, experienced drugs users can tell the difference between the effects of methamphetamines and the effects of cocaine; it depended on the route of administration. When both drugs were administered through an IV tube, the highs were less distinguishable because the route of administration directly into the bloodstream results in a rapid onset of effects for both drugs.
Methamphetamines and cocaine both act as powerful stimulants, with methamphetamine being a type of amphetamine that can be easily produced from pseudoephedrine and cocaine being a tropane alkaloid that is most commonly used recreationally and obtained from coca leaves. Both substances result in a euphoric high and feelings of pleasure by affecting dopamine levels in the brain but they have distinctive properties and side effects. Cocaine in particular, causes a fast heart rate and elevated blood pressure and when administered, intravenously reaches the brain within seconds. Remember, the use of these substances can lead to serious health risks, including addiction, heart problems and cognitive issues.