From birth to growth to old areas, human beings inevitably have to deal with drugs, and we should be accustomed to various drugs in our lives. The most common methods of drug packaging on the market are capsules, tablets, granules, and solutions.

    Capsules: According to the different capsule materials used to fill the medicine are divided into hard capsules, soft capsules, enteric-coated capsules, etc., generally for oral use. Capsules can mask the bitter taste and special odor of drugs, and can also improve the stability of drugs and improve the bioavailability of drugs. Therefore, capsules should be taken whole, not powdered.

    Tablet: refers to a tablet-type preparation made by mixing a drug with appropriate auxiliary ingredients and processing it, mainly for oral administration. The tablet has accurate dosage, stable quality, convenient taking and low cost. Generally, it includes ordinary compressed tablets, sugar-coated tablets, sustained-release tablets, controlled-release tablets, effervescent tablets, multi-layer tablets, etc. For sustained-release and controlled-release tablets, the whole tablet should be swallowed when taking the medicine. Once chewed, it will not have a specific effect.

    Solution: generally refers to the oral or external solution of the drug. The solvent is mostly water, alcohol or oil. The dosage of the solution is easy to grasp and adjust, and the drug has a large dispersity. After oral administration, the absorption is rapid and complete, and the effect is fast.

    Granules: Also known as granules or dry syrup. It is a dosage form that has developed rapidly in recent years, especially in pediatrics.

    Injection: referred to as injection, including sterile or sterilized solution, water injection, oil injection and powder injection, etc. Injections must be sterile, pyrogen-free, safe and stable. Generally speaking, powder injections should be dissolved with a suitable solvent, such as penicillin salt, etc. before use; other powder injections, such as Rocephine, are specially equipped with lidocaine solution as a vehicle in order to relieve pain during intramuscular injection.

    Ointment: a semi-solid external preparation that can be easily applied to the skin, mucous membranes or wounds by adding the drug into a suitable base. The drugs in some ointments can also have systemic therapeutic effects after being absorbed through the skin.

    Suppository: refers to a solid preparation made of drugs and suitable substrates for oral administration, usually used for systemic or local treatment in anus, and a few are used in vagina and urethra.