Twice daily means exactly that
"Our IV therapies complement rather than replace standard medical care, focusing on supporting your body's natural recovery processes." Scientific Evidence Base The research behind IV therapy components varies by specific nutrient: Vitamin C has been the subject of multiple clinical trials for respiratory infections, including COVID-19
Dev Psychobiol 2022;64:e22252
Even when the vitamin formula itself is genuine, improper administration can lead to complications such as dizziness, irregular heartbeat, a drop in blood pressure, or in rare cases, an air embolism
PubMed laboratory research record [PMID: 18077579] PubMed record related to this compound for laboratory literature review
The body does this with foods high in sulfur, protein (particularly cysteine), and foods rich in methyl- groups