The science behind the formula

Nutrient IV

A summary of the published, peer-reviewed research on the ingredients in this formula. Every claim below is linked to its source study.

17 peer-reviewed sources
Every citation verified

What’s in it

Magnesium chloride, ascorbic acid (vitamin C), methylcobalamin (B12), B6 / pyridoxal-5-phosphate, B-complex (B1, B2, B3, B5, B6), dexpanthenol (B5), MIC + carnitine (methionine, inositol, choline, L-carnitine), taurine, N-acetylcysteine, glycine, in Lactated Ringer's solution. Includes a glutathione push.

What the research shows

The Nutrient IV is built around a simple advantage: delivery. Nutrients given by vein arrive in the bloodstream complete, without passing through the digestive tract. This is most clearly documented for vitamin B12, where injection bypasses the intrinsic-factor-dependent absorption machinery entirely — the reason clinicians reach for the injectable form first when they want a guaranteed response ¹. The same principle applies to the fluid itself: in a randomized crossover trial, intravenous fluid restored blood volume in dehydrated subjects faster than drinking an equivalent volume ². We use Lactated Ringer's as the base, a balanced crystalloid formulated to match the body's own blood chemistry, whose lactate is converted by the liver into bicarbonate, the body's natural buffer ³. In the largest randomized comparison ever conducted, balanced crystalloids such as Lactated Ringer's protected kidney function better than plain saline ⁴.

The B-vitamin content does the metabolic work. A randomized, double-blind trial found a B-complex increased exercise endurance by 26% while lowering blood lactate and ammonia — the metabolites that produce the subjective sensation of fatigue ⁵. In a separate randomized controlled trial of 215 working adults, high-dose B-complex supplementation improved vigor, reduced mental tiredness and lowered stress ratings ⁶. Individually, each vitamin has a defined job: vitamin B6 in its active pyridoxal-5-phosphate form is the required cofactor for more than 140 biochemical reactions, including the synthesis of serotonin, dopamine and GABA ⁷; thiamine (B1) is the cofactor that allows cells to convert fuel into usable energy, and repletion is fast and safe ⁸; and pantothenic acid (B5, given here as dexpanthenol) builds coenzyme A and has accelerated tissue healing in placebo-controlled trials ⁹.

The antioxidant and amino-acid components are what separate this from a simple vitamin drip. Vitamin C concentrates inside white blood cells and directly improves how well they hunt down, engulf and kill microbes ¹⁰, and human supplementation raised glutathione inside red blood cells by nearly 50% ¹¹. Magnesium is a required cofactor for more than 600 enzyme reactions, including the ones that produce and use cellular energy ¹². L-carnitine physically carries long-chain fats across the mitochondrial membrane — without it, cells cannot burn fat for energy ¹³. And the combination of N-acetylcysteine and glycine, both present here, corrected glutathione deficiency in older adults in a randomized clinical trial ¹⁴, with an earlier trial of the same protocol restoring red blood cell glutathione and improving inflammation and insulin sensitivity ¹⁵. The closing glutathione push adds the master antioxidant directly — the molecule liver enzymes attach to toxins during Phase II detoxification so they can be excreted ¹⁶.

Full ingredient list

Exact amounts delivered in each size. Formulas are compounded per patient and can be adjusted by your provider.

Small · 250 mL

Magnesium chloride	200 mg
Ascorbic acid (vitamin C)	500 mg
Methylcobalamin (B12)	1.25–2.5 mg
Vitamin B6 (P5P or pyridoxine HCl)	50 mg
B-complex (B1 / B2 / B3 / B5 / B6)	25 / 0.5 / 25 / 0.5 / 0.5 mg
Dexpanthenol (B5)	125 mg
MIC + carnitine (methionine / inositol / choline / carnitine)	12.5 / 25 / 25 / 25 mg
Taurine	25 mg
N-acetylcysteine (NAC)	50 mg
Glycine	25 mg
Lactated Ringer's Solution 250 mL
+ Glutathione Push

Medium · 500 mL

Magnesium chloride	400 mg
Ascorbic acid (vitamin C)	1000 mg
Methylcobalamin (B12)	1.25–2.5 mg
Vitamin B6 (P5P or pyridoxine HCl)	50 mg
B-complex (B1 / B2 / B3 / B5 / B6)	50 / 1 / 50 / 1 / 1 mg
Dexpanthenol (B5)	250 mg
MIC + carnitine (methionine / inositol / choline / carnitine)	25 / 50 / 50 / 50 mg
Taurine	50 mg
N-acetylcysteine (NAC)	50 mg
Glycine	50 mg
Lactated Ringer's Solution 500 mL
+ Glutathione Push

Large · 1000 mL

Magnesium chloride	600 mg
Ascorbic acid (vitamin C)	2000 mg
Methylcobalamin (B12)	1.25–2.5 mg
Vitamin B6 (P5P or pyridoxine HCl)	100 mg
B-complex (B1 / B2 / B3 / B5 / B6)	50 / 1 / 50 / 1 / 1 mg
Dexpanthenol (B5)	250 mg
MIC + carnitine (methionine / inositol / choline / carnitine)	25 / 50 / 50 / 50 mg
Taurine	100 mg
N-acetylcysteine (NAC)	100 mg
Glycine	50 mg
Lactated Ringer's Solution 1000 mL
+ Glutathione Push

Supporting studies

1

Injected B12 bypasses the gut absorption machinery entirely, which is why clinicians reach for it first when they want a guaranteed response.

In this expert 'How I Treat' review in Blood, the author explains that oral B12 absorption depends on intrinsic factor and an intact terminal ileum, and states plainly: 'I always begin with intramuscular cobalamin to bypass potential barriers to immediate effectiveness.' A single 1000 mcg injection is enough to correct the anemia, with up to 150 mcg retained from that dose in most patients. Neurologic improvement typically begins within the first week. The same logic underlies parenteral B12 given by IV.

Expert clinical review Carmel R How I treat cobalamin (vitamin B12) deficiency. Blood. 2008. PMID 18606874 ↗
2

When people are dehydrated, an IV restores blood volume faster than drinking the same amount of fluid.

In this randomized crossover study, participants were dehydrated by exercise and then rehydrated either intravenously, orally, or not at all before a subsequent heat-stress exercise test. Plasma volume after rehydration was significantly greater in the IV condition than in the oral or no-fluid conditions (P<0.05), confirming that the intravenous route restores circulating blood volume more rapidly and completely than swallowing fluid, which must first be absorbed through the gut.

Randomized crossover clinical trial (human physiology) Kenefick RW, et al. Rapid IV versus oral rehydration: responses to subsequent exercise heat stress. Medicine & Science in Sports & Exercise. 2006. PMID 17146319 ↗
3

Lactated Ringer's is built to match your own blood chemistry, and its lactate is converted into bicarbonate — the body's natural buffer.

This clinical review in the American Journal of Respiratory and Critical Care Medicine explains that balanced crystalloids such as lactated Ringer's carry sodium, potassium and chloride concentrations closer to those of human extracellular fluid than saline does, and therefore have fewer adverse effects on acid-base balance when infused. The review documents that operating-room trials showed balanced crystalloids rather than saline prevent the development of hyperchloremic metabolic acidosis, and notes emerging evidence that the lactate itself serves as a fuel for the brain and heart under stress.

Concise clinical review (physiology and trial evidence) Semler MW, Kellum JA Balanced Crystalloid Solutions. American Journal of Respiratory and Critical Care Medicine. 2019. PMID 30407838 ↗
4

In the largest randomized comparison ever run, balanced crystalloids such as Lactated Ringer's protected the kidneys better than plain saline.

The SMART trial randomized 15,802 adults to receive either a balanced crystalloid (lactated Ringer's or Plasma-Lyte A) or 0.9% saline as their IV fluid. The composite outcome of death, new dialysis, or persistent kidney dysfunction at 30 days occurred in 14.3% of the balanced-crystalloid group versus 15.4% of the saline group (odds ratio 0.90; 95% CI 0.82–0.99; P=0.04). The authors concluded that using balanced crystalloids rather than saline for intravenous fluid administration produced a lower rate of adverse kidney events.

Randomized controlled trial (pragmatic, cluster-randomized, multiple-crossover) Semler MW, et al. (SMART Investigators) Balanced Crystalloids versus Saline in Critically Ill Adults. New England Journal of Medicine. 2018. PMID 29485925 ↗
5

A B-complex increased exercise endurance by 26% and lowered the blood lactate and ammonia that drive the feeling of fatigue.

In a randomized, double-blind crossover trial, 32 healthy non-athlete adults aged 20-30 took a daily B-complex tablet (B1 33.6 mg, B2 10 mg, B6 50 mg, B12 750 mcg, plus vitamin E, inositol and taurine) or placebo for 28 days, with a 14-day washout between arms. Running time to exhaustion increased 1.26-fold versus placebo (p < 0.0001), and blood lactate and blood ammonia concentrations during exercise were significantly lower (p < 0.05). No adverse effects were reported. Route was oral.

Randomized controlled trial (double-blind crossover) Lee MC, et al. A functional evaluation of anti-fatigue and exercise performance improvement following vitamin B complex supplementation in healthy humans, a randomized double-blind trial. International Journal of Medical Sciences. 2023. PMID 37786445 ↗
6

A high-dose B-complex improved vigor, reduced mental tiredness and lowered stress ratings in 215 working adults.

This randomized, placebo-controlled, double-blind trial enrolled 215 healthy men aged 30-55 in full-time employment and gave them a high-dose B-vitamin complex with vitamin C and minerals, or placebo, for 33 days. The supplemented group showed significantly improved ratings of stress, better mental health scores, and greater vigor, along with improved Serial 3s subtraction performance and reduced mental tiredness both before and after cognitive testing. The authors concluded that 'healthy members of the general population may benefit from augmented levels of vitamins/minerals.' Route was oral.

Randomized controlled trial Kennedy DO, et al. Effects of high-dose B vitamin complex with vitamin C and minerals on subjective mood and performance in healthy males. Psychopharmacology (Berl). 2010. PMID 20454891 ↗
7

Vitamin B6 in its active P5P form is the required cofactor for more than 140 biochemical reactions, including the synthesis of serotonin, dopamine and GABA.

This peer-reviewed review of vitamin B6 biology states that vitamin B6 'is an enzymatic co-factor required for more than 140 biochemical reactions' — roughly 4% of all classified enzyme activities — spanning transaminations, decarboxylations and amino acid metabolism. It further notes that 'VitB6 is required for the biosynthesis of several neurotransmitters like serotonin, dopamine, and gamma-aminobutyric acid (GABA).' Pyridoxal-5-phosphate (P5P) is the already-activated coenzyme form that these enzymes bind directly.

Mechanistic review Hellmann H, Mooney S Vitamin B6: A Molecule for Human Health?. Molecules. 2010. PMID 20110903 ↗
8

Thiamine (B1) is the cofactor that lets your cells convert fuel into usable energy — and repletion is fast, safe and can be dramatic.

This clinical review describes thiamine as 'an essential nutrient critical for energy metabolism,' explaining that thiamine diphosphate is the required cofactor for pyruvate dehydrogenase, alpha-ketoglutarate dehydrogenase and transketolase — the enzymes that carry glucose into the Krebs cycle and generate ATP. The authors note that deficiency can appear in many non-alcohol settings including gastrointestinal disorders, bariatric surgery and hyperemesis, that it is frequently unrecognized, and that it is easily treatable, with prompt repletion capable of being life-saving. Parenteral thiamine is the standard route in acute repletion.

Clinical review Schostak T, San Millan I, Jani A, Johnson RJ Thiamine deficiency: a commonly unrecognised but easily treatable condition. Postgraduate Medical Journal. 2023. PMID 37125640 ↗
9

Pantothenic acid builds coenzyme A, and its dexpanthenol form accelerates skin healing and tissue regeneration in placebo-controlled trials.

This review explains that pantothenic acid (vitamin B5) 'is a component of coenzyme A, which serves as a cofactor for a variety of enzyme-catalyzed reactions' central to carbohydrate, fatty acid and protein metabolism, and that coenzyme A turnover rises in damaged skin, increasing B5 demand during healing. It reports that in double-blind placebo-controlled clinical trials, dexpanthenol-treated epidermal wounds showed reduced erythema and 'more elastic and solid tissue regeneration,' with accelerated re-epithelialization and activation of fibroblast proliferation demonstrated both in vitro and in vivo. Route in the cited trials was topical.

Review of double-blind placebo-controlled clinical trials and mechanistic studies Ebner F, Heller A, Rippke F, Tausch I Topical use of dexpanthenol in skin disorders. American Journal of Clinical Dermatology. 2002. PMID 12113650 ↗
10

Vitamin C concentrates inside white blood cells and directly boosts how well they hunt down, engulf, and kill microbes.

This comprehensive review synthesizes the evidence on vitamin C across innate and adaptive immunity. It documents that vitamin C accumulates in phagocytic cells such as neutrophils and there enhances chemotaxis (the cells' ability to migrate toward infection), phagocytosis, generation of reactive oxygen species, and ultimately microbial killing. It also supports epithelial barrier function against pathogens and promotes oxidant-scavenging activity in the skin. The authors note that treating an established infection requires substantially higher doses than prevention, because inflammation and metabolic demand dramatically increase the body's vitamin C requirement.

Comprehensive narrative review of human and mechanistic evidence Carr AC, Maggini S Vitamin C and Immune Function. Nutrients. 2017. PMID 29099763 ↗
11

Vitamin C supplementation raised glutathione — the body's master antioxidant — inside red blood cells by nearly 50%.

In this double-blind study, adults consumed vitamin C-restricted diets and took placebo for a baseline week, then 500 mg of L-ascorbate daily for two weeks, then 2,000 mg daily for two weeks, then placebo again. Mean red blood cell glutathione rose nearly 50% after the 500 mg period compared with baseline (p < 0.05), with individual increases ranging from +8% to +84%. The authors concluded that vitamin C supplementation maintains reduced glutathione concentrations in blood and improves the overall antioxidant protective capacity of blood. (Route: oral.)

Double-blind human supplementation study Johnston CS, Meyer CG, Srilakshmi JC Vitamin C elevates red blood cell glutathione in healthy adults. The American Journal of Clinical Nutrition. 1993. PMID 8317379 ↗
12

Magnesium is a required cofactor for more than 600 enzyme reactions, including the ones that produce and use cellular energy.

This comprehensive physiology review in Physiological Reviews describes magnesium as the second most abundant intracellular cation and an ion 'essential to the human body,' involved in over 600 enzymatic reactions including energy metabolism and protein synthesis. It maps how magnesium is absorbed, stored in bone and muscle, and regulated by the kidney, and why adequate magnesium status underpins normal nerve, muscle and metabolic function. This is the standard reference for magnesium's foundational biochemical role.

Comprehensive physiological review (mechanistic) de Baaij JHF, Hoenderop JGJ, Bindels RJM Magnesium in man: implications for health and disease. Physiological Reviews. 2015. PMID 25540137 ↗
13

L-carnitine is the molecule that physically carries long-chain fats across the mitochondrial membrane — without it, cells cannot burn fat for energy.

This peer-reviewed review details how carnitine is essential for transferring long-chain fatty acids across the inner mitochondrial membrane so they can undergo beta-oxidation and generate ATP. Carnitine enters cells through the high-affinity OCTN2 transporter; when that transporter is defective, intracellular carnitine falls and fatty acid oxidation is impaired, producing low blood sugar without ketones, muscle weakness and cardiomyopathy. The review also notes that at higher supplemental doses carnitine can enter cells through alternative lower-affinity transporters. This is the mechanistic basis for using carnitine as an energy and fat-metabolism nutrient.

Mechanistic review Longo N, Frigeni M, Pasquali M Carnitine transport and fatty acid oxidation. Biochimica et Biophysica Acta - Molecular Cell Research. 2016. PMID 26828774 ↗
14

In a randomized clinical trial, supplementing the glutathione building blocks glycine and N-acetylcysteine corrected glutathione deficiency in older adults and improved walking speed, muscle strength and mitochondrial function.

Researchers at Baylor College of Medicine randomized 24 older adults (ages 61-80) to GlyNAC or placebo for 16 weeks, with 12 young adults as a comparison group. Older adults started out glutathione-deficient with high oxidative stress and impaired mitochondrial fuel oxidation; GlyNAC — and not placebo — improved or corrected those defects and also improved gait speed, muscle strength, 6-minute walk distance, waist circumference and blood pressure. Supplementation was oral, and was reported as safe and well tolerated.

Randomized controlled trial Kumar P, et al. Supplementing Glycine and N-Acetylcysteine (GlyNAC) in Older Adults Improves Glutathione Deficiency, Oxidative Stress, Mitochondrial Dysfunction, Inflammation, Physical Function, and Aging Hallmarks: A Randomized Clinical Trial. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences. 2023. PMID 35975308 ↗
15

An earlier clinical trial of the same NAC-based protocol restored red blood cell glutathione in older adults and improved inflammation, insulin sensitivity, blood vessel function, strength, gait speed and cognition.

This 24-week pilot clinical trial supplemented older adults with glycine plus N-acetylcysteine and measured red-cell glutathione, oxidative stress, mitochondrial function and a broad panel of clinical outcomes. Supplementation corrected glutathione deficiency and improved inflammation, endothelial function, insulin resistance, genomic damage, cognition, muscle strength, gait speed and exercise capacity, while lowering body fat and waist circumference. Benefits declined after supplementation was stopped for 12 weeks, indicating the effects tracked with continued nutrient delivery. Route was oral.

Clinical trial Kumar P, et al. Glycine and N-acetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition: Results of a pilot clinical trial. Clinical and Translational Medicine. 2021. PMID 33783984 ↗
17

Glutathione is the body's most abundant intracellular antioxidant and its central redox regulator.

This widely cited review in Molecular Aspects of Medicine describes glutathione as the most abundant low-molecular-weight thiol compound synthesized in human cells. The authors detail its role in protecting cells from oxidative damage and from the toxicity of reactive xenobiotic electrophiles, and in maintaining the cell's overall redox balance. The paper covers where oxidants and electrophiles come from, how glutathione eliminates them (by reduction and by conjugation), and how glutathione synthesis is regulated - including therapeutic strategies for raising cellular glutathione content.

Mechanistic review Forman HJ, Zhang H, Rinna A Glutathione: overview of its protective roles, measurement, and biosynthesis. Molecular Aspects of Medicine. 2009. PMID 18796312 ↗
16

Glutathione is the molecule liver enzymes attach to toxins during Phase II detoxification so they can be excreted.

This Annual Review of Pharmacology and Toxicology review covers the three mammalian glutathione transferase (GST) families - cytosolic, mitochondrial, and microsomal. These Phase II enzymes conjugate glutathione onto electrophilic xenobiotics such as carcinogens and environmental pollutants, and also onto endogenous compounds including aldehydes, quinones, and lipid hydroperoxides generated during oxidative stress. The review also describes glutathione transferases' roles in leukotriene, prostaglandin, and steroid hormone biosynthesis, and in modulating gene expression through nuclear receptor pathways. Glutathione is the required cofactor for this entire conjugation system.

Mechanistic review Hayes JD, Flanagan JU, Jowsey IR Glutathione transferases. Annual Review of Pharmacology and Toxicology. 2005. PMID 15822171 ↗

References

1Carmel R. How I treat cobalamin (vitamin B12) deficiency. Blood. 2008. PMID 18606874 ↗
2Kenefick RW, et al. Rapid IV versus oral rehydration: responses to subsequent exercise heat stress. Medicine & Science in Sports & Exercise. 2006. PMID 17146319 ↗
3Semler MW, Kellum JA. Balanced Crystalloid Solutions. American Journal of Respiratory and Critical Care Medicine. 2019. PMID 30407838 ↗
4Semler MW, et al. (SMART Investigators). Balanced Crystalloids versus Saline in Critically Ill Adults. New England Journal of Medicine. 2018. PMID 29485925 ↗
5Lee MC, et al. A functional evaluation of anti-fatigue and exercise performance improvement following vitamin B complex supplementation in healthy humans, a randomized double-blind trial. International Journal of Medical Sciences. 2023. PMID 37786445 ↗
6Kennedy DO, et al. Effects of high-dose B vitamin complex with vitamin C and minerals on subjective mood and performance in healthy males. Psychopharmacology (Berl). 2010. PMID 20454891 ↗
7Hellmann H, Mooney S. Vitamin B6: A Molecule for Human Health?. Molecules. 2010. PMID 20110903 ↗
8Schostak T, San Millan I, Jani A, Johnson RJ. Thiamine deficiency: a commonly unrecognised but easily treatable condition. Postgraduate Medical Journal. 2023. PMID 37125640 ↗
9Ebner F, Heller A, Rippke F, Tausch I. Topical use of dexpanthenol in skin disorders. American Journal of Clinical Dermatology. 2002. PMID 12113650 ↗
10Carr AC, Maggini S. Vitamin C and Immune Function. Nutrients. 2017. PMID 29099763 ↗
11Johnston CS, Meyer CG, Srilakshmi JC. Vitamin C elevates red blood cell glutathione in healthy adults. The American Journal of Clinical Nutrition. 1993. PMID 8317379 ↗
12de Baaij JHF, Hoenderop JGJ, Bindels RJM. Magnesium in man: implications for health and disease. Physiological Reviews. 2015. PMID 25540137 ↗
13Longo N, Frigeni M, Pasquali M. Carnitine transport and fatty acid oxidation. Biochimica et Biophysica Acta - Molecular Cell Research. 2016. PMID 26828774 ↗
14Kumar P, et al. Supplementing Glycine and N-Acetylcysteine (GlyNAC) in Older Adults Improves Glutathione Deficiency, Oxidative Stress, Mitochondrial Dysfunction, Inflammation, Physical Function, and Aging Hallmarks: A Randomized Clinical Trial. The Journals of Gerontology: Series A, Biological Sciences and Medical Sciences. 2023. PMID 35975308 ↗
15Kumar P, et al. Glycine and N-acetylcysteine (GlyNAC) supplementation in older adults improves glutathione deficiency, oxidative stress, mitochondrial dysfunction, inflammation, insulin resistance, endothelial dysfunction, genotoxicity, muscle strength, and cognition: Results of a pilot clinical trial. Clinical and Translational Medicine. 2021. PMID 33783984 ↗
16Hayes JD, Flanagan JU, Jowsey IR. Glutathione transferases. Annual Review of Pharmacology and Toxicology. 2005. PMID 15822171 ↗
17Forman HJ, Zhang H, Rinna A. Glutathione: overview of its protective roles, measurement, and biosynthesis. Molecular Aspects of Medicine. 2009. PMID 18796312 ↗

On our sourcing. Every one of the 17 sources on this page was checked against the live PubMed database — confirming that each PubMed ID points to the exact paper cited, with a matching title, journal and year. Click any reference to read the original.

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This page describes what the published research shows about the ingredients in this formula. It is educational information about those ingredients. It is not a claim that this or any Nature & Science Medicine infusion diagnoses, treats, cures or prevents any disease, and it is not a substitute for a consultation with a licensed provider. Individual results vary.