The present invention regards compositions comprising Tigecycline and lactose as well as a method for stabilizing Tigecycline containing solutions.

Methods, kits and compositions for treating a cancer, the method comprising administering to a subject in need thereof a glycylcycline, for example tigecycline, and a TKI, wherein the glycylcycline and the TKI are provided in a synergistic ratio.

A novel combination comprising a beta-hairpin peptidomimetic of the formula cyclo(-Thr-Trp-lle-Dab-Orn-DDab-Dab-Trp-Dab-Dab-Ala-Ser-DPro-Pro) (I), and a compound of the glycylcycline class, especially tigecycline, that enable therapeutic control of specific bacterial infections in human or animals at doses of the individual compounds lower than either of the compounds administered alone. The combination can be used as a medicament to treat e.g. skin or soft tissue infections

Crystalline solid forms of tigecycline Form I Form II Form III Form IV and Form V compositions comprising these crystalline solid forms and processes for preparing these crystalline solid forms are described herein.