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"f" means fluid. The squiggle means ounce (see the bottom of the table at List of abbreviations used in medical prescriptions or Uncia (unit)). "i" is the roman numeral one, and when there are more than one "i", some styles of writing replace "j" as the last character (ij = 2, iij = 3, iiij = iv = 4). So one fluid ounce of the first two ingredients, and two fluid ounces of the third. PDF file here shows more related symbols. 85.76.74.235 (talk) 12:47, 13 May 2018 (UTC)[reply]
