Background: TBIs are the leading causes of impairmentand asthenia.It is deemed that approximately1.5-2 million people are injured every year.The rehabilitation of such people can be financially draining and can put further strain on several aspects of such households. The intricate and the diversity of such injuries make it tough topredetermine a standardized treatment protocol for rehabilitation. TENS can be used to alter brain activity by stimulating the vagus nerve. Thus, promoting recovery of consciousness and cognition.Purpose: To evaluate the effect oftVNS onthe promotion of cognitive recovery in patients with post-traumatic moderate to severe brain injury and compare traditional neuro-rehabilitative methods with application of tVNS.Method: A sample of 58 patients affected with moderate to severe TBI owing to various patho-physiologic sequalae within the age group 16-40 years were selected and divided into two groups-A and B, A was the control group whereas participants of only group B received tVNS in the first ten days of the treatment (acute phase). Outcome measures used for the study were GCS and RLAS-R. Result: Patients belonging to group B showed greater cognitive retrieval when compared to patients of group A. tVNS when applied in the acute phase yields better results.Conclusion: tVNS is an inexpensive supplementary method and can be inculcated in the early rehabilitation protocol.It is well tolerated and is user friendly and can be easily instilled in the rehabilitation methods.