You can also call the manufacturer to ask whether they have produced this batch of this drug.
Substandard drugs are divided into fake drugs and inferior drugs. Some of them are fake. Either the manufacturer does not exist, the drug does not exist, or the batch of the drug does not exist
Attachment:
The Langfang Drug Control Institute summarized three methods to help the public identify authenticity.
In response to questions raised by the public, the Municipal Drug Inspection Institute summarized and proposed three brief methods for identifying counterfeit and substandard drugs under different circumstances: First, check the appearance of the drug (including outer packaging, instructions and contained drugs). Check whether the printed contents of the packaging and instructions are consistent. There may be typos in the instructions and packaging of fake and inferior drugs, and the printing quality is not good. Check the appearance of the drug for splinters, spots, mildew, etc. If so, it is likely to be Counterfeit medicines. The second is to observe the ingredients of the medicine. If you want to check whether capsules filled with traditional Chinese medicine powder contain western medicine ingredients, you can open the capsule, lay the powder out flat, and observe with a magnifying glass to see if there is powder similar to tablets or colored sugar coating of sugar-coated tablets. The third is to experience the efficacy of medicines. If the medicine you take has no effect or the effect is not obvious, you can replace it with similar medicines from other manufacturers. If the latter is obviously effective, the former is more likely to be fake and inferior medicines.