It is interesting that we begin by discovering the etymological origin of the term drug. Thus, we can state that it is a word that derives from the Greek, specifically "pharmakon," which can be translated as "medicine."
According to the dictionary of the Royal Spanish Academy (RAE ), drug is synonymous with medicine : a substance that is used in the prevention, relief or cure of a disease and in the repair of its sequels .
A drug is a synthetic or natural matter which, due to its properties, can cause a functional or anatomical effect in a living being . The component that has toxic or pharmacological properties is called active principle .
The chemical composition of the drugs is known exactly, so that they can be accurately dosed to achieve the desired effects. This allows us to know what physiological or functional changes will occur in the organism Once your intake is completed.
The health authorities of a nation only authorize the marketing and distribution of a drug when there are sufficient studies and essays about its effects on a large number of individuals. In this way, the possibility that the result is adverse is minimized.
At present we can establish that there are two fundamental types of drugs if we consider what your purchase. Thus, on the one hand, there are those that can only be purchased in pharmacies with a medical prescription, that is, the doctor must have prescribed it through the relevant document so that his patient can acquire it. These are medicines that are going to be used in a treatment that will have its corresponding medical control.
On the other hand, there are those that are sold freely, that is, without having to have a prescription. And it is considered that they are safe medications and that they can be used for specific and habitual ailments among the population as a simple headache, for example.
If we take into account, however, what is its use we find a wide variety of types of drugs. Among them are the following:
-Antiallergic, what they are responsible for is to end the negative effects of an allergic reaction.
-Analgesics, whose function is to relieve physical pain.
-Anti-inflammatories, which seek to reduce inflammation, as the name implies.
-Laxatives, which are prescribed with the clear objective of ending a constipation situation.
-Antipyretics, what they do is lower the fever.
Beyond what is indicated by the RAE in his dictionary, in the field of pharmacy the notion of medicine is usually used to refer to a product in which one or more drugs (with active ingredients) are combined with substances that are not active at the pharmacological level (the excipients ). The excipients help produce, store, transport and dispense the medications, although the effects are produced exclusively by the active substances of the drugs.
He paracetamol It is an example of a drug. In this case, the drug serves to relieve the pain (it is analgesic) and to fight fever (it has antipyretic properties).