Segmentation by type categorises erectile dysfunction medication into distinct pharmacologic classes and their sub‑variants. The dominant class, PDE5 inhibitors, includes sildenafil, tadalafil, vardenafil, and avanafil, each differing in onset time, half‑life, and food interaction profile, collectively capturing the bulk of prescription volume. Hormonal therapies, primarily testosterone replacement (gel, patch, injection), address hypogonadal states that exacerbate ED, representing a smaller but clinically essential niche. Alprostadil‑based products comprise intracavernosal injections, intraurethral suppositories, and topical gels; these are reserved for patients unresponsive to oral agents and thus occupy a specialized market slice. Finally, investigational and emerging agents such as soluble guanylate cyclase stimulators and novel nitric‑oxide donors are in early‑stage trials, indicating future diversification. Each type contributes uniquely to the overall market size, with PDE5 inhibitors driving the majority share while the ancillary classes provide depth and therapeutic breadth.