What is posology?

What Does posology Mean

The notion of dosage is used to refer to the way a drug is dosed . The term also refers to the area of pharmacology focused on the doses in which drugs have to be delivered.

It should be remembered that a medicine or drug is a substance that, when administered to an organism, allows to appease, cure or prevent a disease or reverse its consequences. For the drug to achieve the desired result, it must be administered in its fair measure, since if it is administered in a lower or higher quantity, it will have no effect or can even cause damage or even death.
Dosage, in this framework, is linked to the proper way to deliver a drug . That is why it studies the functioning of the active principles and the relationship between the dose and the physical and physiological state of the patient, for example.

With regard to the physical state of the patient, one of the most relevant data is his weight in relation to his height and age. This last piece of information is part of the physiological state, along with sex and species: let's not forget that drugs are made for humans and animals, and that many times their administration ignoring this parameter can be fatal (for example: a painkiller for horses it should not be ingested by one person).
The type of presentation of the drug is another question studied by the dosage. Medicines can be marketed in capsules , tablets , drops , etc.
It is important to note that, in addition to the amount of the remedy, the dosage also defines the time interval between one administration and the next. It is not enough to indicate 10 mg of a drug: it is essential to establish how often the patient has to receive that dose.
Similarly, the duration of treatment is also part of the dosage regimen . Scheduling the dose, with the amount of drug and the interval between each administration, has to consider the extent of the process. The dosage, in short, indicates how many milligrams of medicine the individual must ingest or receive, how often and for how many days.
In addition to the criteria set out so far, the dosage requires knowledge of the dose of the active ingredient or active salt that should be indicated according to the weight of the patient. The cause of the disease is also of great importance, since in some cases this factor determines whether one drug or another is administered, especially if it must be attacked directly or indirectly.

As in any medical consultation, finding the cause of a disease requires a professional observation process that leads to a serious and accurate diagnosis, if possible complemented by a series of laboratory tests for greater certainty. At this point we can reflect on the great difference that exists between self-medication and the recommendation made by a doctor: reading the leaflet of a drug is not enough to cover the dosage, because we do not ignore this stage of scientific study that can be so decisive. be in some cases.
Another of the fundamental points of the posology is the regional unit system . Although this may not represent a problem for someone who is trained and works in their place of birth, doctors who travel abroad have to face a great difference in this regard in more than one case. In the first place, it is of relevance when studying a picture and determining the appropriate dose; but it also becomes necessary to communicate this information to the patient. If this transmission is confused, an error of varying severity may occur.

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