"How do you treat Achilles tendonitis? Rest, ice, compression, and elevation are of the utmost importance during the initial acute phase of your injury. Over the counter anti-inflammatories can also have a beneficial effect on increasing the pain and inflammation. Depending on the severity of your injury, you may need to be in a w walker boot for a period of time to calm down the inflammation. To prevent recurrence, physical therapy may be utilized to help stretch out the tendon. Orthotics placed in shoes and sneakers can also help prevent recurrence."