IV Therapy: Evidence, Common Formulas, and What to Ask Before Booking

## What Is IV Therapy? Intravenous (IV) nutrient therapy delivers vitamins, minerals, amino acids, and other compounds directly into the bloodstream via an IV drip or push, bypassing the gastrointestinal tract entirely. The claimed advantage is **100% bioavailability** — oral supplements are subject to variable absorption rates that depend on gut health, food intake, and individual metabolism. IV delivery eliminates that variable. IV therapy is administered by registered nurses, paramedics, or physicians in clinic settings. Mobile IV services bring the treatment to homes, hotels, or offices. It sits at the intersection of clinical medicine and wellness — widely used and growing, but with a thinner evidence base than many providers suggest. ## Common IV Formulas **Myers Cocktail** The most studied IV formulation, originally developed by physician John Myers in the 1970s. A standard Myers cocktail contains magnesium, calcium, B vitamins (B1, B2, B3, B5, B6, B12), and vitamin C in normal saline. A 2009 pilot study by Forsyth et al. in the *Journal of Alternative and Complementary Medicine* showed significant improvement in fibromyalgia symptoms. Used for fatigue, migraines, and general wellness. **High-Dose Vitamin C** Doses of 10–75g IV vitamin C are used in integrative oncology settings as an adjunct to chemotherapy, with some evidence of improved quality of life and reduced treatment-related side effects (Padayatty et al., 2006; Carr & Cook, 2018). At high doses, vitamin C acts as a pro-oxidant rather than an antioxidant — the mechanism differs from dietary intake. Note: high-dose IV vitamin C is contraindicated in people with G6PD deficiency, where it can trigger haemolytic anaemia. **NAD+ Infusion** Nicotinamide adenine dinucleotide (NAD+) is a coenzyme involved in energy metabolism, DNA repair, and sirtuin activation. NAD+ declines with age. IV NAD+ is used in addiction recovery settings (Brain Restoration Plus protocol), where a 2014 study by Mestayer et al. reported significant reductions in withdrawal severity and cravings. Its use in healthy individuals for anti-ageing and energy is more anecdotal — oral precursors (NMN, NR) are showing promise in trials, but direct comparative IV data is limited. **Glutathione Push** Glutathione is the body's primary antioxidant. Administered as an IV push (1–3g) often following a Myers cocktail drip. Used for skin brightening, liver support, and oxidative stress. Evidence is mostly mechanistic and observational; randomised controlled trial data is sparse but accumulating in liver disease contexts. **Hydration Drips** Plain normal saline or Lactated Ringer's solution with optional electrolytes — primarily used for hangover recovery, heat exhaustion, or post-event rehydration. The clinical benefit here is well-established for genuine dehydration; whether it provides benefit over adequate oral hydration in healthy individuals is debated. ## What the Evidence Actually Supports IV therapy's evidence base is uneven. The strongest support exists for: - **Correction of documented deficiencies** — IV iron, B12, or magnesium supplementation in patients with confirmed deficiencies and impaired oral absorption - **Adjunct cancer care** — high-dose IV vitamin C alongside conventional treatment - **Acute illness recovery** — IV fluid and electrolyte replacement in genuine dehydration The weaker evidence covers most of the wellness market's use cases: energy boosting, immune "supercharging," anti-ageing, and hangover recovery in otherwise healthy, well-nourished people. This does not mean IV therapy is ineffective in these contexts — it means the evidence is early, and most benefits reported are based on observational data, patient-reported outcomes, or inference from nutrient science rather than RCTs. ## Safety and What to Verify IV therapy is generally safe in clinical hands, but it carries risks that oral supplements do not: - **Phlebitis** — inflammation at the insertion site, risk reduced with proper technique and appropriate gauge needles - **Infection** — risk with any break in skin integrity; sterile technique is non-negotiable - **Fluid overload** — relevant for patients with cardiac or renal insufficiency - **Allergic reactions** — rare, but anaphylaxis to B vitamins or preservatives has been reported; the provider must be equipped to manage this - **Contraindications** — G6PD deficiency (vitamin C), haemochromatosis (iron), pregnancy (certain formulas), drug interactions **Questions to ask before booking:** 1. What are the credentials of the person inserting the IV? (Nurse, paramedic, or physician) 2. Is there a physician on-call or on-site for adverse reactions? 3. What is the full ingredient list of the formula I am receiving? 4. Do you screen for G6PD deficiency, kidney disease, or drug interactions? 5. What is your adverse event protocol? A clinic that cannot answer questions 1–4 clearly and quickly is not operating to an appropriate standard of care. ## Oral vs IV: When Does IV Actually Make Sense? IV delivery makes the most pharmacological sense when: - Oral absorption is impaired (Crohn's disease, post-bariatric surgery, severe malabsorption) - You need a high plasma concentration that oral dosing cannot achieve (high-dose vitamin C) - Speed of delivery matters (acute dehydration, hangover recovery, acute migraine) - You have a documented deficiency with poor oral tolerance For healthy individuals with good gut function, the marginal benefit of IV versus well-absorbed oral supplementation is less clear. The experience — lying down in a calm clinic for 45 minutes — may itself have therapeutic value via relaxation and parasympathetic activation, though that is not what is being sold.