Wellness5 min readUpdated
IV Vitamin Therapy: Benefits, Evidence and Who It Helps
What IV vitamin therapy can and cannot do, what the research says about hangovers, immunity, energy and NAD+ drips, the risks, who should avoid it and how to choose a safe provider.
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IV vitamin therapy delivers fluids, vitamins and minerals straight into a vein, producing higher blood levels than pills. It can help with dehydration and proven deficiencies, and many people feel refreshed afterward, but there is little evidence that it boosts immunity, cures hangovers, causes weight loss or slows aging in healthy people. It carries small risks such as vein irritation and, rarely, infection, so it should follow medical screening by a licensed provider.
- IV therapy bypasses the gut, giving higher blood levels than oral supplements.
- It makes most sense for dehydration and proven deficiencies.
- There is little evidence for immunity, hangover cures, weight loss, detox or anti-aging claims.
- Human evidence for IV NAD+ is very limited, and it must be infused slowly.
- Risks include bruising, vein irritation and, rarely, infection or fluid overload.
- Choose a provider who screens your health and lab results and tells you exactly what is in the bag.
On this page 8 sections
IV vitamin therapy delivers fluids, vitamins and minerals through a small catheter in a vein, straight into the bloodstream. Drips are marketed for everything from hangovers and jet lag to glowing skin, immunity and anti-aging. Some of those uses make sense, and many are not backed by good evidence yet. Because IV therapy is a medical procedure with real, if small, risks, it is worth knowing which is which before you book.
This guide explains what IV therapy can and cannot do, what the research says, what NAD+ drips are, the risks, who should avoid it and what to look for in a provider.
How IV vitamin therapy works
A nurse places a thin catheter in a vein in your arm or hand, and a bag of saline or another fluid with added vitamins, minerals or amino acids drips in over 30 to 60 minutes. Because it bypasses the gut, nutrients reach your blood faster and at higher levels than when you swallow them. For example, the gut absorbs less vitamin C as oral doses rise, while IV vitamin C can produce blood levels many times higher.
Higher blood levels are not the same as better health, though. Water-soluble vitamins such as vitamin C and the B vitamins are filtered out by the kidneys within hours once the body’s needs are met, and in healthy, well-fed people there is little evidence that the extra amount improves energy, immunity or skin.
What IV therapy can and cannot do
Reasonable uses
Where it makes sense
- RehydrationWhen you are dehydrated and struggling to drink enough
- Proven deficiencyWhen blood tests show low levels and pills are not absorbed well
- Comfort and recoveryFeeling refreshed after illness, travel or heavy exercise, alongside rest and fluids
Not proven
Claims to be wary of
- Curing hangoversFluids help dehydration, but nothing “cures” a hangover
- Boosting immunityNo good evidence of fewer colds in healthy people
- Weight lossA drip does not burn fat
- DetoxYour liver and kidneys already do this
- Anti-agingNo proof it slows aging
A 2026 Harvard Health review summed it up: scientific evidence does not back up most marketing claims for IV vitamin therapy, and it carries risks. Many people do feel better after a drip, and some of that comes from the fluids themselves, rest and the experience. That can be worth it to you, as long as you know what you are paying for.
Common ingredients and what they do
| Ingredient | Role in the body |
|---|---|
| Saline or lactated Ringer’s | Fluid and electrolytes; the part that actually rehydrates you |
| B vitamins (B-complex, B12) | Energy metabolism and nerve function; B12 deficiency causes real fatigue |
| Vitamin C | Antioxidant and needed to make collagen |
| Magnesium, zinc | Muscle and nerve function, immunity, wound healing |
| Amino acids | Building blocks of protein, often marketed for recovery |
| Glutathione | An antioxidant the body makes itself; benefits of IV doses are not well proven |
What about NAD+ drips?
NAD+ (nicotinamide adenine dinucleotide) is a molecule every cell uses to make energy and repair DNA, and its levels fall with age. That has made NAD+ infusions popular for energy and “longevity.” The human evidence for IV NAD+ is very limited: a handful of small studies, none showing that it slows aging or improves healthspan. NAD+ also has to be given slowly, often over 1 to 4 hours, because a fast drip can cause nausea, cramping, chest pressure, a racing heart or flushing. If you try it, expect a longer appointment, ask what dose you are getting, and treat it as an experiment rather than a proven treatment.
Risks and side effects
- Common: bruising, soreness or a cold feeling in the arm where the catheter goes in, and a metallic taste or warm flush with some ingredients.
- Less common: a vein becoming inflamed (phlebitis), fluid leaking under the skin, lightheadedness.
- Rare but serious: infection or sepsis from contaminated products, allergic reactions, too much fluid for people with heart or kidney disease, and electrolyte problems. The FDA has warned about IV products mixed under unsanitary conditions at some clinics, med spas and mobile IV services, including a case of septic shock after an at-home vitamin infusion.
IV therapy is not for everyone. Tell your provider if you have heart, kidney or liver disease, high blood pressure, are pregnant or breastfeeding, take blood thinners or other medicines, or have G6PD deficiency (high-dose vitamin C can cause red blood cells to break down) or a history of kidney stones.
How to choose a safe IV provider
- Medical screening firstA licensed provider should review your health history, medicines and, ideally, recent lab results before your first drip.
- Licensed staffA registered nurse or other qualified clinician should place the IV and monitor you.
- Clear ingredientsYou should be told exactly what is in your bag and in what dose.
- Sterile preparationAsk where the products come from and how they are prepared.
- Honest adviceA good provider will tell you when you do not need a drip, and when pills, food or a B12 shot would do the job.
IV therapy at Glow Theory
Every new IV client at Glow Theory has a consultation that reviews current lab results before treatment, and drips take 30 to 60 minutes. We offer three blends:
Glow Boost
Single$195
Paired$150
Body Sculpt Boost
Single$225
Paired$185
NAD+ Boost
From$375
“Paired” prices apply when the drip is booked with another treatment. Glow Boost combines vitamins and antioxidants for skin and post-treatment support; Body Sculpt Boost adds amino acids, vitamins and minerals for recovery and pairs with CoolSculpting Elite and EMSCULPT NEO. See IV therapy in Carlsbad for details, read our guide to vitamin C, or book a consultation at our South Carlsbad studio on El Camino Real.
Frequently asked questions
What are the benefits of IV vitamin therapy?
It rehydrates quickly and can correct some proven deficiencies. Many people feel refreshed, but evidence for immunity, energy, anti-aging and weight loss claims in healthy people is limited.
Does IV therapy help hangovers?
The fluids can ease dehydration symptoms, but nothing cures a hangover, and drinking water, resting and time work for most people.
Is IV vitamin therapy safe?
It is generally low risk when given by licensed staff after screening, but it can cause bruising and vein irritation and, rarely, infection, allergic reactions or fluid overload.
Who should not get IV therapy?
People with heart, kidney or liver disease, uncontrolled high blood pressure, G6PD deficiency or kidney stones, and those who are pregnant or breastfeeding, unless cleared by their doctor.
Does NAD+ IV therapy work?
Human studies are few and small, and none show that it slows aging. It must be infused slowly to avoid nausea, cramping and chest pressure.
How long does an IV drip take?
Most vitamin drips take 30 to 60 minutes; NAD+ drips usually take longer.
Sources
- IV therapy for vitamin replenishment: health boost or expensive placebo? Harvard Health Publishing, 2026
- FDA highlights concerns with compounding of drug products by medical offices and clinics under insanitary conditions. US Food and Drug Administration, 2021
- Intravenous NAD+ versus nicotinamide riboside: a retrospective tolerability pilot study. Frontiers in Aging, 2026
- Vitamin C fact sheet. NIH Office of Dietary Supplements
Insiyah Darugar
Insiyah Darugar, MSN, FNP is the founder and CEO of Glow Theory Aesthetic & Dermatology Studio in Carlsbad. She brings more than 15 years of hands-on experience in dermatology and aesthetics and completed the Dermatology Nurse Practitioner Fellowship at Lahey Hospital & Medical Center, a…
