IVs or IMs, what's the difference? Swipe right to see the main benefits of each method. IV stands for intravenous drip therapy, a medical procedure that, via a cannula, delivers fluids, 10 Pack Glutathione Intramuscular Shot ELIXR IV Therapy Glutathione IV vs. Pills in Los Angeles: Which One Works Better FDA highlights concerns with using dietary ingredient glutathione to compound sterile injectables FDA