A customized intravenous micronutrient infusion originating with Baltimore physician John Myers, M.D., and later described in the literature by Alan Gaby, M.D. Typical components include magnesium, calcium, B-complex vitamins, and vitamin C in sterile fluid. Used electively for fatigue, migraine, fibromyalgia, and recovery; high-quality outcome evidence remains limited, so it is best framed as an adjunct after screening—not a stand-alone cure.
A Myers’ Cocktail IV is an intravenous mix of magnesium, calcium, B vitamins, and vitamin C—named for John Myers, M.D., who used nutrient injections in Baltimore from the 1950s until 1984. Alan Gaby, M.D., later published a widely cited clinical description of a diluted “Myers’ cocktail” and the conditions for which it was used in practice (fatigue, migraine, muscle spasm, seasonal allergies, and fibromyalgia among them).
What It Includes
Formulas vary by clinic. Gaby’s published version typically combines magnesium chloride, calcium gluconate, hydroxocobalamin (B12), pyridoxine (B6), dexpanthenol (B5), B-complex, and ascorbic acid, diluted in sterile water or saline and infused slowly. Modern longevity clinics often customize doses, swap B12 forms, or add glutathione at the end as a separate push. The bag is not a single FDA-approved drug product; it is a compounded mixture of approved ingredients used off-label for wellness indications.
Mechanisms
IV delivery bypasses intestinal absorption limits and first-pass metabolism, producing higher peak plasma levels than oral tablets—especially for magnesium and vitamin C, whose gut uptake saturates. Magnesium is a cofactor in hundreds of enzymatic reactions and can reduce neuromuscular excitability (relevant to migraine and muscle cramp protocols). B vitamins serve as cofactors in mitochondrial energy metabolism. Vitamin C supports collagen synthesis and redox chemistry. None of these mechanisms, by themselves, prove a clinic’s marketing claim; they explain why the ingredients were chosen.
Evidence & Limits
The best-known trial is a small randomized, placebo-controlled pilot of intravenous micronutrient therapy in fibromyalgia (Ali et al., 2009), which found a trend toward improvement but was not definitive. Magnesium has a stronger independent evidence base for some migraine patients with documented low levels or poor oral tolerance. Parenteral B12 is indicated for true deficiency, not for a one-time energy boost in replete adults. Position the Myers’ Cocktail as an elective micronutrient infusion with mixed, mostly low-to-moderate quality evidence—useful for some people after labs and a clear goal, not as a protocol that reverses chronic disease.
Safety
Infusion-rate effects (warmth, flushing, hypotension from magnesium, taste changes from B vitamins) are the most common complaints and usually ease when the drip is slowed. High-dose vitamin C requires G6PD screening because of hemolysis risk. Calcium–phosphate compatibility, osmolarity, and renal function must be checked before compounding. Use USP <797> sterile technique; never mix undocumented “cocktails” at the chairside without a compatibility review.
Summary
A Myers’ Cocktail IV is a classic nutrient drip—magnesium, B vitamins, and vitamin C given intravenously. It is a reasonable elective option for selected patients when ingredients, doses, and screening are explicit, and a poor substitute for diagnosing deficiency, sleep debt, or iron/thyroid disease.
Eat a light meal and hydrate. Wear a sleeve that rolls above the elbow. Bring a full medication and supplement list (especially blood-pressure drugs, diuretics, and high-dose oral vitamins). Complete G6PD testing if the clinic uses higher-dose vitamin C. Tell staff about kidney stones, heart block, or known G6PD deficiency.
Minimal downtime. Transient warmth, metallic or vitamin taste, increased urination, or mild fatigue can occur the same day. Most people resume normal activity immediately. Keep hydrating and note any delayed rash, chest symptoms, or severe headache.
Vein irritation, burning at the site, flushing, hypotension (especially from magnesium given too fast), vasovagal reaction, infiltration, infection, and electrolyte shifts. High-dose vitamin C can trigger hemolysis in G6PD deficiency. Calcium-containing formulas require extra compatibility care. Not appropriate in significant renal failure, untreated hypercalcemia, or as emergency care for anaphylaxis or severe asthma.
Gaby A.R. Intravenous Nutrient Therapy: the "Myers' Cocktail" (Altern Med Rev, 2002).
https://pubmed.ncbi.nlm.nih.gov/12126456/Ali A. et al. Intravenous Micronutrient Therapy (Myers' Cocktail) for Fibromyalgia: a Placebo-Controlled Pilot Study (J Altern Complement Med, 2009).
https://doi.org/10.1089/acm.2008.0410Padayatty S.J. et al. Vitamin C: Intravenous Use by Complementary and Alternative Medicine Practitioners and Adverse Effects (PLoS One, 2010).
https://doi.org/10.1371/journal.pone.0011414Mauskop A., Varughese J. Why All Migraine Patients Should Be Treated with Magnesium (J Neural Transm, 2012).
https://doi.org/10.1007/s00702-012-0790-2CDC. Injection Safety and Safe Practices (One & Only Campaign).
https://www.cdc.gov/injection-safety/USP <797> Sterile Compounding Standards (overview).
https://www.usp.org/compounding/usp-compounding-standards© 2026 Longevity Clinic Finder. All rights reserved.
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$150–$400 per infusion for a standard Myers-type formula; $250–$600+ with add-ons such as extra vitamin C or glutathione (market-dependent).
Frequency
Common clinic pattern: weekly for 4–8 visits while assessing response, then monthly or as needed. Frequency should follow symptoms and labs—not a fixed retail package alone.
Adults with a defined goal (e.g., migraine adjunct, documented micronutrient need, post-viral fatigue workup already underway) who pass renal, G6PD, and allergy screening and understand that wellness-cocktail evidence is limited.
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