Tablets, patches, capsules... Why are there so many dosage forms?

Guide: The same drug, dosage form different prices and efficacy can not, how to choose? !---- Do you hesitate to buy ibuprofen tablets or ibuprofen particles when you go to a pharmacy with a fever and headache? The same drug, the same manufacturer production, why the price difference is so much? Why is there always a slight difference between medicines used by the elderly, children and adults? Medicine, is a necessity in people's lives, let's take a look at the drug dosage patterns.So, why would the same drug have to prepare so many dosage forms? 1, different groups of people, different dosage forms.for patients who often forget to take their medication, they can choose to take the retarded release drug once a day.for patients in need of first aid, you can choose to quickly work with under-the-tongue tablets, aerosols and injections.the elderly have varying degrees of degeneration, and infants and young children do not swallow the entire pill, they can choose granules, oral fluids or drops., children are more resistant to bitter-flavored drugs, which can improve the taste of the drug by wrapping a layer of sugar coat on the outside of the tablet.2, different pharmacological effects, different dosage forms.such as magnesium sulfate, if made into oral dosage form (concentration of 33%), after taking with a strong bile excretion effect;3, the speed of action is different, different dosage forms.slow-controlled release agent has a slow effect and is a long-acting preparation suitable for patients who take long-term medication, while under-the-tongue tablets, injections, inhalation aerosols, the effect is rapid, suitable for first aid., for example, when an asthma attack occurs, the use of salbutamol aerosols can quickly relieve symptoms.4, reduce adverse reactions to drugs.because most of the anti-cancer drugs have certain adverse reactions, and targeted preparations can allow most drugs to be concentrated in the tumor site, in order to reduce the normal tissue adverse reactions, such as belavzumab.many drugs on the stomach have irritation, after taking the drug will appear stomach discomfort and other adverse reactions, and intestinal-soluble wrap tablets are a good solution to this problem.reduces the irritation of the stomach, such as aspirin, by wrapping a coat of ordinary tablets that is insoluble in the stomach fluid.5, increase the compliance of patients.some short-acting drugs are taken three times a day, which may cause some patients to forget to take the drug and have poor compliance. this gives birth to a slow release agent - the slow (even constant) release of the drug through the preparation process, so that the amount of exposure to the drug in the body can be maintained in an effective and safe range. the most common example of slow-controlled release preparation is the hypertension drug nitrobenzene, through the change to controlled release tablets, so that the original three times a day to reduce the frequency of the drug to once a day, to a large extent to improve the patient's compliance. in daily life, in addition to the drug, the understanding of drug dosage forms can also help us to more accurately purchase drugs in line with their own needs, in order to reduce the occurrence of adverse reactions and improve the safety of the drug. .