Products Granisetron hydrochloride is available in 1-mL single-use d 4-mL multiple-use vials containing in each milliliter the equiv- alent of granisetron 1 mg, sodium chloride 0.9%, citric acid 2 mg, and benzyl alcohol 10 mg as a preservative. (1) Granisetron hydrochloride is also available in 1-mLsingle-use vials containing the equivalent of granisetron 0.1 mg, sodium chloride 9 mg, and citric acid 2 mg. (1)