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Tablets

Tablets

The tablets are pharmaceutical formulations based on active substances and excipients with a preservative or coating function. With a solid consistency, the tablets can have various shapes, weights and colors. Usually the weight of the tablets is expressed in milligrams, although there are antibiotic tablets that can even reach up to one gram for each of them. The tablets not only have different weight, shape and color, but also a different consistency according to the use for which they are intended and according to the mode of intake. In this context we can distinguish swallowable, chewable, effervescent tablets, to be dissolved in the mouth, that is the tablets or to be absorbed through the mucous membrane of the tongue, therefore sublingual. Aside from other medical classifications, the tablets we all know, they are pharmaceutical preparations to be taken orally, that is, by mouth. The intake of these solid “bits” that represent a portion of drug or plant extract, serves to soothe some more or less serious ailments.

How they prepare


The tablets are made from the compression or pressing of chemical or natural substances reduced to powder or granules. Many commonly used medicines are produced in tablets, which represent the simplest way to take many active ingredients. To avoid the breakdown or dispersion of the active powders, the tablets are enriched with other substances called “excipients”, which keep the active principle unaltered and avoid the disintegration of the powder compound. According to their function, the excipients of the tablets can be diluents, anti-adhesives, lubricants, absorbents or breakdown agents. Diluents increase the mass of the tablet making it more workable; the anti-adhesives prevent the tablet from sticking to the processing mold; the same function also have the lubricants, which avoid the attachment of powders to the mold. The absorbent excipients serve to better aggregate the granular compounds of the tablet, while the disaggregating agents reduce the time of “dissolution of the tablet”. All the excipients of the tablet are listed in the package of the same. By reading it you will discover that the tablets to be taken contain starch (disaggregating substance), gelatin or other colloidal compounds with an absorbent function or calcium and magnesium stearates with lubricating and anti-adhesive functions. The excipients can also be added to improve the aesthetic appearance of the tablet. This is the case of the dyes that give life to tablets of various shades. Some excipients may serve to improve the taste of the tablet. This is the case with mannitol, which is added to chewable tablets giving a feeling of freshness. The processing steps of the tablet also include the coating, called confection. The coating can serve to improve the aesthetic appearance of the tablet, the taste, but also to avoid damage to the active ingredient by the gastric juices. Many tablet coatings allow for controlled release of the active ingredient or dissolution of the tablet only when it reaches the intestine. The coatings for controlled release are, for example, cellulose, while the gastro-resistant ones can be derived from protein substances. The coating can serve to improve the aesthetic appearance of the tablet, the taste, but also to avoid damage to the active ingredient by the gastric juices. Many tablet coatings allow for controlled release of the active ingredient or dissolution of the tablet only when it reaches the intestine. The coatings for controlled release are, for example, cellulose, while the gastro-resistant ones can be derived from protein substances. The coating can serve to improve the aesthetic appearance of the tablet, the taste, but also to avoid damage to the active ingredient by the gastric juices. Many tablet coatings allow for controlled release of the active ingredient or dissolution of the tablet only when it reaches the intestine. The coatings for controlled release are, for example, cellulose, while the gastro-resistant ones can be derived from protein substances.

Herbal tablets


In addition to the pharmaceutical field, the tablets are now widely used also in the herbal field. The preparation criteria of herbal tablets are similar to those of pharmaceutical tablets, but the active ingredient contained changes. Herbal tablets contain plant extracts not in the form of common powder or granules, but in the form of dry extract. The dry extract is the pure part of the plant. It is obtained by pulverizing the leaves, which are immersed in water and brought to high temperatures. With this process, the plant releases its active ingredients. The liquid part is then evaporated, while the remaining dry part will contain all the molecules of the officinal plant used. The dry extract allows to obtain 100% of the active ingredients of the plant,

Uses


Herbal tablets are produced to treat various ailments and to relieve common ailments. As with pharmaceutical tablets, there are also herbal tablets for sore throat, for insomnia, for weight loss, to combat water retention, headaches and menstrual pains. Herbal tablets are produced in the form of swallowable pills, chewable tablets or pills to be dissolved in water in case you have problems swallowing them whole. Herbal tablets fall into the category of food supplements. There are herbal tablets to improve the well-being of the intestine, to combat constipation and irritable colon discomfort, but also to reduce water retention or to combat the sense of hunger.

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