Application segmentation of the Melatonin Capsules market isolates demand drivers across four principal use‑cases. The dominant Sleep Disorders segment, accounting for roughly 45 % of total volume, comprises patients diagnosed with insomnia, delayed sleep‑phase syndrome, and other clinically defined disturbances; its size is reinforced by prescription uptake and over‑the‑counter sales in mature markets. The Jet Lag segment, representing about 20 % of the market, reflects transient circadian‑rhythm adjustments among international travelers, with seasonal spikes aligned to major holiday periods. Shift Work consumption, estimated at 25 %, captures labor forces engaged in non‑standard schedules, where melatonin supplementation mitigates chronic misalignment and associated health risks. Finally, the General Wellness segment, roughly 10 %, includes consumers seeking preventative sleep support without a formal diagnosis, driven by lifestyle‑focused marketing. Collectively, these application categories define the overall market size and inform the Melatonin Capsules segmentation framework used by analysts to allocate revenue forecasts.