Commonly used coating agents include

Commonly used coating agents include: ointment, cream, gel, solution, tincture, spray, patch, ophthalmic agent and so on.

1. ointment: it is a semi-solid preparation, mainly composed of drugs and basic lipids, such as white soft wax, magnesium silicate, liquid white soft wax, liquid paraffin wax, etc. It is usually used to treat skin diseases, such as eczema and itching.

2, cream: similar to ointment, but with higher water content, it is easier to apply. It usually contains high oil content and two or more emulsifier components, so that the drug components are distributed as evenly as possible in the whole formula. Cream may contain drugs, antibacterial agents or other ingredients. Often used to treat skin itching, dryness and heat and other symptoms.

3. Gel: Gel is a semi-fluid dosage form, usually a gel made by adding sodium hydroxide and carboxymethyl cellulose to a water base. The most obvious advantage of gel is that it can make drugs stay on the skin surface for a long time, thus better relieving some skin symptoms, such as itching and pain.

4. Solution: Solution is a diluted dose of dissolved drugs, which is usually used to treat minor burns, scalds, cuts and other wounds. The solution is usually transparent, colorless or yellowish.

5. Tincture: Tincture refers to a dosage form made by taking alcohol or water as a solvent, dissolving drugs in the solvent, and adding appropriate amount of syrup, glycerin, spices, etc. Tincture is suitable for treating oral diseases such as sore throat and oral ulcer. Common tinctures are compound licorice tincture and erythromycin tincture.

6. Spray: Spray is an oral or nasal spray, which is a fine pharmaceutical dosage form and can quickly achieve curative effect in the oral cavity or nasal cavity. Spray is often used for rhinitis, oral ulcer and other symptoms.

7. Patch: A patch is a transdermal drug patch attached to the skin, and the drug penetrates into the human body through the skin. Common patches are analgesic patch and antipyretic patch.

8. Eye drops: Eye drops are a kind of pharmaceutical preparations specially designed for ophthalmic diseases, including eye drops, eye ointment and tear substitutes. Ophthalmic drugs are suitable for treating various eye diseases, such as keratitis and conjunctivitis.

Matters needing attention when using coating agent types

1. Use according to the instructions of the doctor or drug instructions: different types of coating agents may need to be used in different ways. You should read the doctor's advice and drug instructions carefully and use them in strict accordance with the instructions. Do not increase or decrease the dose or frequency without authorization.

2. Cleaning the affected area: Before taking the medicine, the affected area should be cleaned to increase the absorption and effect of the medicine.

3. Avoid excessive friction: try to avoid excessive friction or rubbing when applying the medicine, so as not to affect the effect of the medicine.

4. Avoid rubbing your eyes or mouth: If the medicine needs to be applied with your fingers, wash your hands with clean water after application. Avoid contact with eyes or mouth when applying medicine to avoid adverse reactions.