As of the latest information available, there are no generic versions of tigecycline injection currently on the market. Tigecycline, marketed under the brand name Tygacil, is still under patent protection, which restricts the availability of generic alternatives. The FDA's Office of Generic Drugs Annual Report from 2015 also does not list any approved generic versions of tigecycline injection. Therefore, individuals seeking this medication will likely need to obtain the branded product, Tygacil, until the patent expires or any generic versions are approved and become available on the market.

Sources:
[1] drugpatentwatch.com
[2] fda.gov
[3] drugs.com