From Battlefield Pain Relief to Chronic Pain and Depression: The Expanding Role of Ketamine Therapy

The U.S. military’s latest investment in ketamine is drawing national attention to a medication with an increasingly diverse role in modern medicine.

Earlier this month, headlines revealed that the Pentagon is pursuing an expedited authorization pathway for a dissolvable ketamine wafer intended to help military personnel manage severe pain on the battlefield. But the science behind ketamine’s pain-relieving properties is not limited to emergency medicine.

For decades, researchers have explored ketamine’s effects on the nervous system, including its potential role in managing certain chronic pain conditions and treatment-resistant depression. At Tranquility Ketamine Clinic in Albuquerque, New Mexico, medically supervised IV ketamine infusions are among the treatment options available to appropriately selected patients experiencing chronic pain and mental health conditions.

Although battlefield pain management and outpatient infusion therapy have very different clinical objectives, they share an important scientific foundation: ketamine’s ability to influence how the nervous system processes pain and other signals.

From Acute Battlefield Injuries to Chronic Pain: Understanding Ketamine’s Role

The military’s proposed ketamine wafer is being developed to manage acute pain—the immediate pain associated with injuries or other sudden medical events. Chronic pain, however, is fundamentally different.

While acute pain generally serves as a warning that the body has experienced an injury or illness, chronic pain persists or recurs for more than three months. In some cases, pain continues long after the original injury has healed.

Chronic pain can involve changes in how the nervous system processes and responds to pain signals. This is sometimes referred to as central sensitization, a process in which the nervous system becomes increasingly sensitive to certain stimuli.

Ketamine interacts with NMDA receptors, which are involved in glutamate signaling and can contribute to pain sensitization. By blocking these receptors, ketamine may temporarily interrupt some of the signaling processes associated with persistent pain. Researchers have investigated IV ketamine for conditions involving neuropathic pain, including complex regional pain syndrome (CRPS), as well as certain other difficult-to-treat pain conditions.

The evidence varies considerably by diagnosis. Some studies suggest that selected patients may experience meaningful pain relief, while others show limited or uncertain benefits. A 2025 Cochrane systematic review concluded that the available evidence for ketamine in chronic non-cancer pain remains limited and of low to very low certainty. This means IV ketamine should not be viewed as a universal solution for chronic pain. Rather, it may be considered as part of an individualized treatment plan after careful evaluation of the patient’s condition, medical history, previous treatments, and potential risks.

The Connection Between Chronic Pain and Depression

One of the most important aspects of ketamine research involves the relationship between physical pain and mental health. Chronic pain and depression frequently occur together. Living with persistent pain can affect sleep, mobility, relationships, and the ability to participate in everyday activities. Over time, these challenges may contribute to emotional distress, anxiety, and depressive symptoms.

Depression, in turn, can influence how individuals perceive and cope with physical pain. Although pain and depression are distinct medical conditions, they involve some overlapping neural pathways and neurotransmitter systems, including glutamate signaling. This is one reason researchers are interested in ketamine’s potential applications across both pain management and mental health care.

For treatment-resistant depression, clinical research has demonstrated that IV ketamine can produce relatively rapid antidepressant effects in some patients. For chronic pain, the evidence is more variable, and treatment outcomes depend heavily on the underlying condition. For individuals experiencing both chronic pain and depression, a comprehensive medical evaluation is especially important. Treatment planning should consider each condition independently, rather than assuming improvement in one will automatically resolve the other.

The broader significance of ketamine research lies in its potential to provide additional options for patients whose symptoms have not responded adequately to conventional care. At Tranquility Ketamine Clinic, understanding the relationship between physical discomfort and emotional well-being is an important part of exploring individualized treatment options.

Contact us to schedule a private consultation to learn if Ketamine IV Therapy is right for you.