Background: Mild traumatic brain injury (mTBI) is common and often associated with persistent symptoms, reduced quality of life, and emotional well-being, with no proven pharmacological treatments to enhance recovery. NeuroAiD (MLC901), a multi-component botanical formulation with neuroprotective and neurorestorative properties, has shown potential benefits, but evidence from individual trials remains limited and inconsistent. We aimed to systematically review and synthesise evidence on the efficacy and safety of MLC901 in adults with mTBI.Methods: We conducted a systematic review and aggregated meta-analysis of randomised placebo-controlled trials identified through searches of PubMed, Cochrane Central, Scopus, and Google Scholar to May 31, 2026. The primary outcome was post-concussion symptom burden measured by the Rivermead Post-Concussion Symptoms Questionnaire (RPQ) at 6 months. Secondary outcomes included cognitive function, quality of life, and emotional well-being. Effect estimates were pooled using inverse-variance random-effects meta-analysis with DerSimonian–Laird estimation of between-study variance and are presented as mean differences or standardised mean differences with 95% confidence intervals.Results: 21 papers were identified through systematic literature search and two randomised placebo-controlled trials comprising 260 participants (128 assigned to MLC901 and 132 to placebo) were included in the review. At 6 months, MLC901 was associated with significantly reduced post-concussion symptoms compared with placebo (mean difference [MD] −4.39, 95% CI −6.21 to −2.57; I²=0%) and improved quality of life (QOLIBRI MD 4.80, 95% CI 1.79–7.80; I²=0%). MLC901 was also associated with significant reductions in anxiety (HADS-Anxiety MD −1.49, 95% CI −2.24 to −0.73; I²=0%) and depression (HADS-Depression MD −1.18, 95% CI −1.91 to −0.44; I²=0%). Six CNS Vital Signs cognitive domains were harmonised and pooled; however, no statistically significant pooled effects were observed for Complex Attention, Executive Function, Processing Speed, Visual Memory, Verbal Memory, or Reaction Time. Adverse events were infrequent and similar between groups (4.6% vs 7.8%; risk ratio 0.59, 95% CI 0.22–1.58), and no serious adverse events were reported.Conclusions: Among adults with mTBI, treatment with MLC901 for 6 months was associated with reductions in post-concussion symptoms, improvements in health-related quality of life, anxiety, and depression, but no change in cognition compared with placebo, and was well tolerated by participants. Although these findings were consistent across the included trials, they should be interpreted cautiously because the evidence is based on only two randomised trials and requires confirmation in larger adequately powered studies.