Subcutaneous (under the skin) with an insulin syringe
Intravenous administration allows glutathione to bypass the digestive system, leading to higher bioavailability and more effective increases in glutathione levels compared to oral supplements
PubMed CrossRef Ou SH, Wu LY, Chen HY, et al

Concentration Calculation 1500mg mixed with 6ml bacteriostatic water provides a concentration of: 250mg/ml Syringe Conversion Guide Quick Reference 1ml = 250mg 0.5ml = 125mg 2ml = 500mg Experimental Research Ranges Lower Experimental Range Research Range 100150mg Frequency: 23 weekly Commonly Investigated In Antioxidant-support research Oxidative-stress regulation pathways Cellular-resilience investigations Example Volumes 100mg = 0.4ml (40 units) 150mg = 0.6ml (60 units) Intermediate Experimental Range Research Range 250mg Frequency: 23 weekly Commonly Investigated In Metabolic-support research Mitochondrial-signaling pathways Pigmentation-related investigations Cellular-maintenance research Example Volume 250mg = 1ml (100 insulin units) Higher-Range Experimental Research Research Range 500mg Frequency: Up to 23 weekly Research Context Considered a higher-range experimental protocol commonly investigated in more intensive antioxidant and oxidative-stress research settings

These comments reflect subjective experiences, not clinically measured outcomes, and should not be viewed as typical or guaranteed results
Dizziness is a broad term describing lightheadedness, unsteadiness, or a floating sensation