In pharmacies every day we see thousands of different drugs. Pills, sprays, syrups, suspensions… From this variety simply the head goes around. Which is better: solid or liquid dosage forms? What is the peculiarity of the medicine in the bubbles? Let's consider in details what is hidden in these mysterious fluids.
Liquid dosage forms have a wide range of applications. Often they are used as internal tools, rarely – outdoor. These drugs are available in special glass containers.They treat colds and eye diseases, cough and diseases of the gastrointestinal tract, and some of the medicinal liquids are used in the process of complex surgical interventions.
In order to allow the user to clearly distinguish one type of medication in the bottle from the other, there is a classification of liquid dosage forms. According to her, all of these devices can be divided into the following groups:
Each type has features of the application. Let's look at these liquid dosage forms in more detail.
This form of medicine is a powder or liquid. They are usually dissolve in water. The liquid mixture includes the salt solutions, extracts, syrups and fragrant water. Data of liquid formulations are made based on individual need with a prescription in pharmacies. They are not stored for more than five days.
Dry medicines sold in powder form, which the house adjusted to the desired volume with water. These drugs should be stored according to the manufacturer's recommendations: in the refrigerator or at room temperature.
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In the manufacture of medicines apply the following principle: first, make a rubbing of substances that dissolve most easily. Then start to introduce pre-homogenized poorly soluble components. Plant material is initially ground to a powder with the addition of water.
If the medicine you want to add to the aqueous solution alcoholic tincture, it is recommended to do it in small portions to prevent sedimentation.
A Feature of these funds is that the technology of manufacturing of liquid dosage forms is reduced to the extraction of useful substances from medicinal herbs in the solvent, and subsequent concentration. The extracts are divided into three types:
The Extracts can be used orally or topically. They are stored up to five years in packaging in a cool place protected from light, in a process which is likely to precipitate. Therefore it is best to mix the extract before use.
Preparation of liquid dosage forms in the form of syrups is reduced to the concentration of sucrose solutions. In addition to the main active ingredients, they may include extracts and flavorings. In its consistency the syrup is thick, transparent and have a taste and smell characteristic of the drug. These dosage forms are taken inside and in very high demand in Pediatrics for "sweetening" of children's medicines. Typically, the therapeutic effect of taking the syrup exceeds the same indicator of tablets. They should be stored in containers with a tight screw-on lid in a cool dark place. The shelf life of the syrup from the pharmacy is not less than two years.
This dosage form is completely transparent and sterile. The introduction of solutions associated with the skin puncture. This medication is made in the form of a syringe-tube, ampoules or vials (glass or polyethylene). If the solution volume exceeds 100 ml, it is called "infusion". Such funds typically are injected into the vein through a dropper. It can be solutions for hemodynamics, to adjust the balance of water and salts, detoxification, parenteral nutrition. There are a wide spectrum of multifunctional tools. There is a rule: if you want to do subcutaneous or intramuscular injection, can be applied as solutions, suspensions and transparent type. Intravenous to introduce only homogeneous transparent solutions.
The solution is usually obtained by way of dilution liquid, solid or gaseous component in the solvent. This tool should be transparent and homogeneous, and no presence of flakes, precipitates, suspended material. To filter the solution uses a special paper, or filters, stacked in a glass funnel on a stand.
The Most common solvent is water. If the solution intended for injection, it should be sterile, if it's external use, you can use boiled. If the medicinal substance is not soluble in water, as a solvent can be used ethyl alcoholor the air or oil (in injecting purpose – castor, sunflower, externally – fish oil). So do the solutions fall into alcohol, water, or essential oil.
There are also solutions intended for topical (wounds, mucous membranes, skin, etc.) and internal use. They are homogeneous and transparent. Such funds are available in bottles with a stopper in the form of drip, which is closed by nevinovna.
Storage solutions is in the refrigerator or at room temperature. This is usually described in the instructions to the drug.
These dosage forms are aqueous extracts from medicinal plants or solutions of dry or liquid extract. Most often they are used inside. Manufacturing of liquid dosage forms in the form of decoction or tincture is usually carried out at a ratio of 1:10, that is, from 1 g plant material is obtained 10 g of product. The coefficient of moisture absorption, water need to take some more. If preparing an infusion of Valerian or of Adonis, observed a ratio of 1:30. In the case of plants with potent component is applied to a ratio of 1:400.
If you are using the concentrate, you take it in the amount of the component according to the recipe.
The manufacturing Technology of infusion and decoction following:
The Decoction of the plant with tannin content (oak, lingonberry, bearberry, etc.) should be filtered hot, and the leaves of the Seine – just as cool. Infusions should be stored in the refrigerator for two days and shake before use.
This term refers to solutions, emulsions or suspensions are required to dispense the drops. They are for internal (Nitroglycerin) or for topical (nasal, eye, ear) application. On the bottle the manufacturer usually sets the dispenser in the form of Calimera that allows you to measure the right amount of medication. The latter should be stored in a cool place protected from light.
These drugs represent two insoluble liquids, one of which is the active substance (a balm or oil) and the other – water. The emulsion is homogeneous and opaque. They can be applied orally, topically or parenterally. If the data of liquid formulations (recipes for which are known to every pharmacist) were made in the pharmacy, the shelf life in the fridge is a couple of days. Industrial analogues retain their properties unchanged up to 1.5 years.
As a subsidiary of the procedures of other primary treatment, doctors may prescribe taking a bath with a special aqueous solutions. They exert a directional influence on the body: relax, strengthen, tone up or fight bacteria. For procedures you can use extracts of various plant or mineral components. The most popular baths from pine needles, lavender, and oxygen or thermal baths.
Often used to treat these liquid dosage forms. Characteristic of them: they can be colored and have a characteristic aroma. Tincture is made by alcohol extraction of medicinal plant components. They can be taken externally or internally, diluted in water or directly on the sugar. The shelf life of them longer than infusions and decoctions.However, a bottle of tincture should be sealed tightly and store in the refrigerator protected from light. Storage can precipitate forms, it is therefore necessary to shake the tool before use.
Manufacturing of liquid dosage forms in the form of a slurry is reduced to the distribution of the powdered components in a liquid medium (oil, water, glycerin, etc.). They can be taken orally, topically, parenterally, or intramuscularly. Immediately before use it is necessary the suspension is stirred for 1 or 2 minutes. They should be stored in the refrigerator protected from light. The freezing of suspensions is invalid.
The Choice of liquid medications is indeed great. Sometimes this form of medication is a necessary measure. For example, children are much more likely to drink a sweet syrup than a nasty pill. Besides it is scientifically proven that this form of medication is most effective when its solid counterpart. The most important thing in the treatment of liquid drugs – follow your doctor's instructions, the instructions, properly stored and do not use after expiration date. If you decided to try herbal infusions, decoctions, tinctures, or extracts, make sure you have no allergic reactions to components of the composition. For children prone to dermatitis, manufacturers produce syrups and emulsions without sugar, so kids have to choose such products.Be healthy!
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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."
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