IV therapy and vitamin injections both get nutrients into your body without going through your digestive system. The real differences are volume, time, cost, and what you're trying to fix. Here's the side-by-side, a goal-by-goal guide, and the cases where neither one is the right call.
The side-by-side
| Vitamin injection | IV therapy | |
|---|---|---|
| How it goes in | A small shot into the muscle, usually arm or hip | A drip into a vein through a small catheter |
| What's in it | One nutrient or a small blend (B12, vitamin D, MIC, glutathione, and others) | IV fluid plus a broader mix of vitamins, minerals, and sometimes medication |
| Fluids | None | Yes, which is the big difference when you're depleted |
| Time | About 2 minutes; whole visit about 5 | 30–45 minutes for most formulas; NAD+ 60–120+ |
| Cost at Refine Redding | Under $50 per shot | $199; NAD+ $500 |
| Best for | A specific nutrient you know you need | When hydration is part of the problem, or you want several things at once |
| How often | Easy to fit into a routine | Usually situational or spaced further apart |
Current shot prices live on the vitamin injections page and IV prices on the IV therapy page.
How each one works
A vitamin injection puts a concentrated dose of one nutrient into the muscle, where it's absorbed into your bloodstream over time. It's quick, it's targeted, and it skips the gut, which matters for nutrients like B12 that some people don't absorb well from food or pills.
An IV delivers fluids and nutrients straight into a vein, so everything is in your bloodstream immediately and at higher amounts than a pill could manage. Because each bag includes IV fluid, it rehydrates you at the same time, which is the main reason it can feel so different after illness, a rough night, or a punishing training week.
Does an IV absorb better than a shot?
Technically, yes: an IV puts 100% of what's in the bag into your bloodstream right away, while a shot absorbs from the muscle over hours. In practice, for many single nutrients (B12 is the classic example), a shot is plenty effective, which is exactly why it's been a standard medical treatment for B12 deficiency for decades. More absorption only matters if you needed more in the first place.
Which one fits your goal?
| If you're dealing with… | Usually start with |
|---|---|
| A low B12 level on recent labs | B12 injection |
| A low vitamin D level your doctor flagged | Vitamin D injection |
| Supporting a GLP-1 or weight-loss routine | B12 or MIC shot as an add-on |
| The morning after, with nausea | Hangover Relief IV |
| Recovering from a stomach bug once you can drink again | An IV for fluids, or oral rehydration if you're keeping liquids down |
| A run-down week and general reset | Myers' Cocktail IV |
| Sore and inflamed after hard training | Anti-Inflammatory IV |
| Interest in longevity science | NAD+ IV, with honest talk about how early the human research is |
What each visit looks like
A vitamin injection is about as quick as healthcare gets. We confirm which shot fits your goal, clean the spot, and give the injection, usually in the arm or hip. You feel a pinch, maybe some mild soreness later that day, and you're back in your car in about five minutes.
An IV takes more time but asks very little of you. We do a quick health check, get you comfortable in a private room, and place the IV, which feels like a blood draw. Then you sit back for 30 to 45 minutes while it runs. Bring a book, answer email, or rest. You can drive yourself home after most formulas.
What a month costs either way
Because the price gap is so wide, it helps to think in months, not visits. A weekly B12 shot for a month costs less than a single IV. A single IV costs about what six to a dozen shots would, depending on which ones. The right choice depends on what you're trying to fix and whether fluids are part of it.
How often is too often?
For most vitamin shots, there's no strict schedule. Many people come weekly or every few weeks and adjust based on how they feel and, ideally, on their labs. For IVs, most people do best treating them as situational rather than routine. If you feel like you need either one constantly just to function, that's a signal to look for the underlying cause with your doctor, not to book more.
When you don't need either
We'll say it even though it costs us the sale: if you eat reasonably well, your labs are normal, and you feel fine, there's no strong evidence you need extra vitamins by shot or drip. If you're mildly dehydrated, water and an electrolyte drink usually do the job. And if you're seriously ill, with chest pain, trouble breathing, confusion, or a fever that won't break, that's a job for urgent care or the ER, not a wellness visit.
The research is clearest for correcting a real deficiency and rehydrating after fluid loss. Broader claims about energy, mood, or immunity are popular and sometimes reasonable, but often not backed by large trials. We'll tell you where the evidence stands for whatever you're considering.
Can you do both?
Yes, and plenty of people do. Adding a shot to an IV visit is easy and doesn't need a separate appointment. A common pattern is a regular B12 or MIC shot as part of a routine, with an IV saved for the weeks that call for one.
Still not sure?
That's a normal place to be. Text us at (530) 201-2665 with what you're trying to fix, and we'll point you to the right option, even if it's the cheaper one. Or read more on what IV therapy costs in Redding.
Frequently asked questions
Is a B12 shot or an IV better?
For a known B12 deficiency, a B12 injection is usually all you need: it's quick, inexpensive, and a long-standing medical treatment. An IV makes more sense when you also need fluids or several nutrients at once.
Does IV therapy absorb better than a vitamin injection?
An IV puts everything into your bloodstream immediately, while a shot absorbs from the muscle over hours. For many single nutrients, a shot is fully effective; more absorption only matters if you needed more.
Which is cheaper, IV therapy or vitamin injections?
Vitamin injections, by a lot. At Refine Redding a shot is under $50, while IVs are $199 and NAD+ is $500.
How long does each one take?
A vitamin injection takes about two minutes and the whole visit about five. Most IV formulas take 30 to 45 minutes once placed; NAD+ takes 60 to 120 minutes or more.
Can I get a vitamin injection and an IV at the same visit?
Yes. Many clients add a shot to an IV appointment so they don't need a separate visit.
Is IV hydration better than drinking water?
Only when you can't rehydrate well by mouth or you're significantly depleted. For mild dehydration, water and an electrolyte drink are usually enough.
Sources
These are the main sources behind the numbers and safety information in this guide.
- Vitamin B12: Fact Sheet for Health ProfessionalsNIH Office of Dietary Supplements. Why B12 injections are a standard treatment when the body doesn’t absorb it well.
- Vitamin D: Fact Sheet for Health ProfessionalsNIH Office of Dietary Supplements. Background on vitamin D levels and deficiency.
- Intravenous Vitamin Therapy (Myers’ Cocktail)Merck Manual Professional Version, reviewed 2025. An independent overview of IV vitamin therapy, what the research shows, and the risks.
- Intravenous Micronutrient Therapy (Myers’ Cocktail) for Fibromyalgia: A Placebo-Controlled Pilot StudyAli A et al., Journal of Alternative and Complementary Medicine, 2009. One of the few placebo-controlled trials of a Myers’ Cocktail, and why we call the evidence early.
- NAD+ precursor supplementation in human ageing: clinical evidence and challengesVinten KT et al., Nature Metabolism, 2025. A recent review of the human NAD+ research, which is still limited.