MVI stands for Multi-Vitamin Infusion, a prescription combination of 13 essential vitamins delivered directly into the bloodstream through an IV line. It is not a pill or supplement you take at home. MVI is a hospital medication used when a patient cannot eat or absorb nutrients normally and needs vitamins supplied intravenously.
Why MVI Is Used
The most common reason someone receives MVI is that they are on parenteral nutrition, often called TPN, which is IV feeding for people whose digestive systems are not functioning well enough to absorb food. When all of your nutrition comes through an IV, none of the vitamins you would normally get from food are entering your body. Without a daily multivitamin added to the IV bag, dangerous deficiencies can develop within days to weeks.
MVI is also used in situations that place extreme metabolic stress on the body: major surgery, severe burns, fractures and other serious trauma, severe infections, and comatose states. These conditions increase the body’s demand for vitamins while often making it impossible for the patient to eat. The infusion helps maintain the body’s ability to heal tissue and fight infection during recovery.
What Vitamins It Contains
A standard adult dose of MVI comes in two vials (5 mL each, totaling 10 mL) that together supply 13 vitamins. The first vial contains the bulk of the formula:
- Vitamin C: 200 mg
- Vitamin A: 3,300 IU
- Vitamin D: 200 IU
- Vitamin E: 10 IU
- Vitamin K: 150 mcg
- Thiamine (B1): 6 mg
- Riboflavin (B2): 3.6 mg
- Vitamin B6: 6 mg
- Niacinamide (B3): 40 mg
- Dexpanthenol (B5): 15 mg
The second vial adds three vitamins that need to be stored separately for stability:
- Folic acid: 600 mcg
- Biotin: 60 mcg
- Vitamin B12: 5 mcg
Because four of these vitamins (A, D, E, and K) are fat-soluble and don’t naturally dissolve in water, the formulation uses a special processing technique with an ingredient called polysorbate 80 to make them mixable with IV fluids. This is one reason MVI exists as a distinct product rather than just dissolving a regular multivitamin tablet into saline.
How MVI Is Given
MVI is never injected directly into a vein on its own. Doing so can cause dizziness, faintness, and irritation at the injection site. Instead, the two vials are mixed together and then diluted into a larger IV bag containing at least 500 mL (and preferably 1,000 mL) of a standard IV fluid like dextrose or saline. The vitamins then drip slowly into the bloodstream along with the rest of the IV solution.
Pharmacy staff prepare MVI in a sterile environment, typically a laminar flow hood that filters the air to prevent contamination. Once the vitamins are mixed into the IV bag, the solution needs to be used within four hours, because some of the vitamins begin to break down after that point. The standard dose for adults and children 11 and older is one 10 mL dose per day.
MVI Formulations: Adult vs. Pediatric
There are separate formulations for adults and children. MVI Adult (and similar products like Infuvite Adult) is approved for patients 11 years and older. MVI Pediatric is designed for infants and children under 11, with adjusted vitamin amounts appropriate for smaller bodies. Both contain the same 13 vitamins but in different concentrations.
Older formulations you may see referenced, like M.V.I.-12, contained only 12 vitamins and lacked vitamin K. Current FDA-approved products include all 13, with the 150 mcg of vitamin K added to the standard formula. This matters because vitamin K is essential for blood clotting, and patients on long-term IV nutrition without it were developing bleeding problems.
Potential Interactions and Precautions
The vitamin K in MVI is worth noting for patients who take blood thinners. Vitamin K works against the mechanism of certain anticoagulants, so the 150 mcg daily dose can affect how well those medications work. Medical teams monitor this and adjust dosing of the blood thinner as needed.
Allergic reactions are rare but possible, particularly to the polysorbate 80 used to dissolve the fat-soluble vitamins. People with known sensitivity to polysorbate should alert their care team. Individual vitamins in the mix can also cause issues in specific conditions. For example, vitamin A can build up to harmful levels in patients with kidney failure, since the body has difficulty clearing it.
Why You Might See MVI on a Hospital Chart
If you or a family member spotted “MVI” on a medication list during a hospital stay, it simply means the care team is supplementing vitamins through the IV to prevent deficiencies. It is a routine, daily addition to IV nutrition rather than a treatment for any specific disease. For patients who cannot eat for extended periods, it is considered an essential part of nutritional support, on par with the calories, protein, and electrolytes also being delivered through the IV line.