You can eat tomatoes after receiving a tetanus shot. There are two types of tetanus injections: tetanus toxoid, which requires a skin test, and tetanus immunoglobulin, which does not require a skin test. If you are to receive the tetanus toxoid, it is essential to perform a skin test beforehand. If an allergy is present, its use is prohibited. Furthermore, it is advised to abstain from alcohol before getting a tetanus shot to avoid any skin redness caused by drinking, which can affect the outcome of the skin test, leading to a failure in the indication for the tetanus injection. There are no contraindications regarding eating tomatoes after a tetanus shot. It is generally recommended to get the tetanus shot within 24 hours after injury.