The expiration date specified for Amoxicillin is not necessarily the same for different manufacturers, but is roughly a 2-3 year period. The expiration date of a drug is the period of time for which the drug is able to maintain its quality under the specified storage conditions. To give you a simple example, for example, the drug specification shows that the expiration date of the drug is until October 2019, the drug can be used until October 31, 2019, and from November 1, 2019 the drug will expire and can no longer be used. If the expiration date is until October 1, 2019, this medication can be used until October 1, 2019, and from October 2, 2019, this medication expires and can no longer be used.