IV Immune Support

The IV drip clinic is the chiropractor of the 2020s. Strip mall storefront, soft lighting, a recliner, a nurse in scrubs, and a thousand-dollar-a-month subscription to feel like you’re doing something about your health. The wellness IV industry has convinced a lot of otherwise reasonable people that vitamins work better when delivered by needle than by mouth, which is true in a small number of medical situations and false in almost every situation those clinics are actually selling to.

I’m not a hospitalist. I’m a psychiatrist. I end up in this conversation anyway, because patients who have anxiety or burnout or long COVID brain fog will tell me, almost apologetically, that they’ve been “doing the drips” for six months. They want to know if I think it’s helping. Most of the time the honest answer is that the rest of what they’re doing is helping, and the IV is the part they can post about.

I had a woman in clinic last spring, late 30s, two kids in daycare, who told me she was paying around $300 a session for monthly “immune support” drips because she “kept getting sick.” Her kids were bringing home a virus every three weeks. That’s not an immune problem. That’s a daycare problem. Daycare is a biohazard. The drip wasn’t doing anything except moving money from her account to a clinic that had figured out the marketing.

What’s actually in the bag

A typical “immune support” or “Myers cocktail” IV is some combination of saline, vitamin C (usually somewhere between 1 and 25 grams), B-complex vitamins, magnesium, calcium, zinc, and sometimes glutathione as a separate push. The branding varies. The contents don’t, much. You’re getting water-soluble vitamins that your kidneys will start excreting within hours, plus electrolytes you almost certainly didn’t need.

Vitamin C is the headliner because it’s cheap and people have heard of it. The Linus Pauling vitamin C megadose story has been around since the 1970s and it has not aged well. Oral vitamin C absorption tops out at around 200mg per dose because the gut has saturable transporters. IV gets around that ceiling, which is genuinely interesting and is exactly why oncology researchers have studied high-dose IV vitamin C in cancer settings. Outside of those specific research protocols, the case for megadose vitamin C in a healthy adult is thin enough to read a newspaper through.

B vitamins are water-soluble. If you’re not deficient, you pee them out. Your urine turns highlighter yellow about an hour after the drip. People interpret that as the vitamins “working.” It’s the vitamins leaving.

Glutathione is the one that gets sold as the prestige add-on. It’s the body’s main intracellular antioxidant, which sounds important, and it is important, inside cells, where you make your own. The data on IV glutathione doing anything useful in healthy adults is essentially absent. There’s some Parkinson’s research. That’s not what the strip mall clinic is treating.

Why people feel better anyway

They do feel better. I’m not going to pretend otherwise. The patient gets an hour in a quiet room, reclined, hydrated, attended to by a person in scrubs who takes their vitals and asks how they’re sleeping. That’s a real intervention. It’s just not a pharmacological one.

The saline alone matters. A lot of the people walking into these clinics are mildly dehydrated, underslept, running on coffee and stress. Drop a liter of normal saline into them and they will, in fact, feel better for the rest of the day. That’s not vitamins. That’s water.

You can buy the feeling of being cared for, and it’s worth something. Just know that’s what you’re buying.

Then there’s placebo, which is not nothing. Placebo effects on subjective symptoms like fatigue, mood, and “energy” run somewhere between 20 and 40 percent in most studies. An IV is the most theatrical placebo we have. There’s a needle. There’s a bag. There’s a clinical setting. There’s a price tag, and the price tag itself elevates the response. Everything about the experience is engineered to produce a strong placebo signal, and it does.

I’m not being snide about this. The experience economy is real and people are allowed to spend their money on experiences. I just want patients to know they’re paying for the experience, not for a measurable improvement in immune function, because that distinction matters when they’re choosing between an IV subscription and, say, a therapist, or a vacation, or a humidifier in the kids’ room.

When IV vitamins are actually indicated

There’s a real version of this. Hospitals run IV vitamins on people who need them. The bar is just much higher than “I want to feel boosted.”

Vitamin D deficiency is the one place where the “I should be supplementing” instinct is often correct. A significant chunk of the population is genuinely low, especially anyone who works indoors and lives north of about 35 degrees latitude. The fix is oral cholecalciferol, 1000 to 4000 IU a day depending on your starting level, with a 25-hydroxy vitamin D blood test to check whether it’s working. It costs about five dollars a month. You don’t need an IV. Vitamin D isn’t even in most “immune drip” cocktails, because it’s fat-soluble and doesn’t play well with the format.

What actually moves the needle on getting sick less

I tell patients the boring stuff because the boring stuff is what works. Sleep seven to eight hours. Genuinely. Sleep deprivation tanks immune function in studies that have been replicated for thirty years and the effect size is bigger than anything you’re going to get from a vitamin. If you have kids in daycare, accept that you’re going to catch everything for two or three years and then you’ll have the immune system of a Victorian nursemaid. If you have pets that lick your face, same deal, slightly slower. Wash your hands. Get the flu shot. Get the COVID booster if you’re in a risk group. Vitamin D if you’re low on the labs.

The part nobody wants to hear: most “I keep getting sick” complaints in healthy adults aren’t immune deficiency. They’re exposure. The drip can’t out-run the toddler.

If you’ve got the money and the IV makes you feel better and you understand what you’re buying, fine. People spend money on stranger things. But if you’re choosing between the drip and rent, or between the drip and seeing your primary care doc for actual labs, the drip should lose every time. The thing about expensive placebo is it works best on people who can afford it without noticing. Everybody else is just paying retail to feel cared for, and there are cheaper ways to be cared for if you go looking.