The Type segmentation of the Post‑traumatic Stress Disorder Treatment Drug market distinguishes therapeutic modalities based on molecular architecture and development pathway. Small‑molecule drugs dominate the segment, accounting for roughly 70% of the market value, due to their established regulatory pathways, oral bioavailability, and cost‑effective manufacturing. Biologic agents, including monoclonal antibodies and recombinant proteins, represent an emerging niche (~15%) driven by advances in neuro‑immune modulation and targeted receptor engagement. Peptide therapeutics contribute about 10% of the market, offering high specificity with reduced systemic side effects, though delivery challenges limit broader adoption. Finally, gene‑therapy and RNA‑based approaches occupy a marginal (<5%) share, reflecting early‑stage clinical exploration and substantial development risk. Each type influences overall market size by dictating R&D investment, pricing strategy, and reimbursement dynamics, thereby shaping the competitive landscape within the PTSD drug portfolio.