Resonium A oral and rectal powder, 15 g, Oral, daily, PRN
resonium -> sodium polystyrene sulfonate
 {
  "is_medication": true,
  "brand_name": "Resonium A",
  "generic_name": "sodium polystyrene sulfonate",
  "active_ingredients": [
    {
      "name": "sodium polystyrene sulfonate",
      "strength": null,
      "strength_unit": null
    }
  ],
  "prn": true,
  "form": "Powder",
  "route": "Oral",
  "systemic": true,
  "doses": null,
  "daily_frequency": "1",
  "total_daily_dose": "15",
  "total_daily_dose_unit": "g"}