selenium sulfide topical(Selsun 2.5% topical shampoo), 1 application, Topical, alternate days, PRN for dandruff
selsun -> selenium sulfide
 {
  "is_medication": true,
  "brand_name": "Selsun",
  "generic_name": "selenium sulfide",
  "active_ingredients": [
    {
      "name": "selenium sulfide",
      "strength": 2.5,
      "strength_unit": "%"
    }
  ],
  "prn": true,
  "form": "Shampoo",
  "route": "Topical",
  "systemic": false,
  "doses": 1,
  "daily_frequency": "Alternate days",
  "total_daily_dose": null,
  "total_daily_dose_unit": null}