Guarantee the quality of the drug and the preparation characteristics of the drug:

The inner packaging of medicines has a great relationship with the stability of protecting medicines. Therefore, different packaging materials should be selected according to the characteristics of medicines and preparations. First of all, it should have stability (physical aspect, chemical aspect, microbiological aspect), homogeneity and airtightness. It does not react with the packaged drug, does not adsorb the drug, and does not change the drug performance. In addition, it should have the strength, heat and cold resistance, light weight, shading, easy cleaning, and easy handling. Different dosage forms of medicine should also have different packaging materials, different packaging forms and packaging specifications.

When changing the inner packaging materials and containers of drugs, stability experiments should be carried out according to the physical and chemical properties of the drugs and the properties of the selected drug packaging materials to examine the compatibility of the selected materials with the drugs. The FDA has stipulated that the packaging of a drug is the standard for maintaining the uniformity, potency, quality, and purity of the drug during the specified shelf life. Therefore, each pharmaceutical manufacturer must carry out stability test work at each stage of pharmaceutical preparation development, and all factors related to packaging must be investigated.

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