Ticarcillin and clavulanic acid is a prescription medication used to treat bacterial infections of the stomach, skin, lungs, bone, joint, urinary tract, and female reproductive system. It is a combination product that contains 2 medications ticarcillin, a beta lactam antibacterial, and clavulanic acid, a beta lactamse inhibitor. This medication comes in an injectable form and is given into the vein by a healthcare provider. The length of treatment can vary depending on your condition. Common side effects include rash, nausea, diarrhea, and irritation at the site of injection. Use this medication only as prescribed. To keep up to date with medication information,.