Dexasone 4mg Injection is a steroid used to treat inflammatory and autoimmune conditions. It can cause various side effects and interact with other medicines and vaccines. Learn more about its benefits, safety, and alternatives. In Conclusion In conclusion, understanding the dexamethasone injection dosage for adults is essential for effective treatment and management of various conditions. By following the recommended dosage guidelines, administering the injections properly, and being aware of potential side effects, you can ensure the safe and beneficial use of dexamethasone in your healthcare regimen. Remember to consult your healthcare provider for personalized dosage instructions tailored to your specific needs ... Find patient medical information for Dexamethasone (Decadron) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Dexamethasone Injection Dexamethasone is a corticosteroid that treats inflammation in your organs. Inflammation occurs when your immune system sends out cells to fight bacteria or heal an injury. A healthcare provider will give you this injection in a hospital or clinic setting.