Beauty intravenous drips and injections: what do they treat? Evidence for fatigue relief and skin brightening, side effects to know before receiving

Beauty intravenous drips and injections deliver components such as vitamin C and glutathione directly into the bloodstream, achieving blood concentrations not possible through oral intake.[1]Comparative trials show fatigue improves for 2 hours to the next day after infusion,[2]but the evidence for skin brightening is weak, and glutathione infusions carry safety concerns.[3][4]What you can realistically expect and what precautions apply depend on your treatment goal.

How do they differ from oral supplements?

The difference is blood concentration. High-dose vitamin C infusions achieve blood levels that cannot be reached by oral intake.[1]Oral vitamin C has limited absorption, and blood levels do not rise much.[2]

However, achieving high blood concentration is separate from seeing visible changes in skin or overall condition. The sections that follow review what research shows for each treatment goal.

What is the evidence for fatigue recovery?

Short-term effects are shown in trials. In a double-blind comparative trial of 141 healthy office workers aged 20–49, divided between vitamin C 10g infusion and saline-only infusion, fatigue scores were lower in the vitamin C group at 2 hours after infusion and the next day.[2]

Oxidative stress markers also decreased, with no difference in side effects.[2]However, the effect appeared only in people whose baseline blood vitamin C was low; those with higher baseline levels showed no difference.[2]

This trial followed a single infusion over one day. Effects from repeated infusions and effects in people without a baseline deficiency are not shown by this result.

Does skin brightening (glutathione infusion) work?

The evidence is still weak. Glutathione is thought to suppress the enzyme that produces melanin and shift melanin toward lighter types, but whether this translates to visible change is unclear.[3]

A 2026 systematic review notes that reported improvements are small and variable, study sizes are limited, assessment methods are not standardized, and follow-up periods are short.[3]Vitamin C is often added together, making it difficult to separate which ingredient is responsible.[3]

Oral glutathione shows reported melanin reduction, but effects vary.[4]Infusions work faster, but concerns include anaphylaxis (severe allergic reaction), liver damage risk, and the absence of established dosing standards.[4]

What are the side effects and who should not receive it?

Vitamin C infusion carries risk of oxalate kidney disease (oxalate nephropathy) and hemolysis in people with G6PD deficiency.[1]These are reported to occur more easily with high doses or repeated infusions.[1]

For this reason, guidelines recommend G6PD testing before vitamin C infusion.[5]Vitamin C supplementation is contraindicated in people with hemochromatosis (iron overload disease), thalassemia, G6PD deficiency, or sickle cell disease.[6]

Glutathione injection reports include hepatic failure in close to one in three people, allergic reactions, and anaphylaxis cases; opinion is cited that it should not be sold outside hospital oversight.[4]Glutathione infusions should be limited to monitored medical settings, according to the systematic review conclusion.[4]

By treatment goal: who is suited and who is not

For people wanting quick fatigue relief, trials demonstrate short-term benefits of vitamin C infusion.[2]For people without baseline deficiency or seeking to fundamentally resolve chronic fatigue, the same results do not necessarily apply.[2]

For those pursuing skin brightening, the decision requires understanding that the evidence is weak and glutathione infusions carry safety concerns.[3][4]Infusions are often chosen based on the wish to brighten overall skin tone,[7]but realistic expectations are best kept modest.

If you have kidney disease, iron disease or anemia traits, or a history of allergies, inform your provider before treatment.

What should be confirmed at consultation before receiving treatment?

Points to confirm are kidney function, presence of G6PD deficiency or iron disease, allergy history, current medications, and your treatment goal. Once your goal is clear, the components, dosage, and frequency are determined.

Ask about the interval and number of sessions, and how to respond if you feel unwell during the infusion. Whether it suits you cannot be decided from an article alone; having your condition evaluated by a healthcare provider before deciding is most reliable.