Written by: Chaz Faulhaber
Published: March 3, 2021
Updated On: August 7, 2026

Enhance Your Immune System This Fall: How an IV Bar Can Help You Stay Ahead of the Season

Fall in Colorado hits hard: shorter days, dry air, altitude, packed schedules, and the first wave of cold and flu season all at once. If you're already running low, that's a tough combination.

An IV bar like Onus IV Therapy + Longevity is where medical professionals administer IV infusions of fluids, vitamins, and minerals to support hydration, recovery, wellness, and overall longevity. Here's how it works, what a session actually feels like, and why so many athletes, busy professionals, and travelers make it part of their fall routine.

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Onus iV has locations in Denver, Boulder and Greenwood Village, Wheat Ridge, Highlands Ranch, and Fort Collins, Colorado. A hydration therapy session at Onus iV involves a healthy dose of vitamins and minerals infused directly into the bloodstream and a comfortable space to sit back and relax in.

YOGA + Life connected with Onus iV to learn more about the benefits of hydration therapy and how it can benefit one’s wellness routine this season.

IV Hydration Bar Denver Colorado

“I’ve now received three IVs by the awesome folk at Onus, and each time I walk out of their office feeling like The Hulk. I’ve used their service both to fight off soul-crushing hangovers as well as to tune my meat machine up for important athletic endeavors (like a four-month backpacking trip). Works wonders for both. Highly recommended.” ~ Zach Davis

What Is an IV Bar? 

An IV bar provides IV hydration therapy with infusions of fluids, vitamins, and minerals in a comfortable lounge setting or through mobile IV services that come to you. IV therapy isn't new. It dates back to the 1950s and the original Myers Cocktail, formulated with Calcium, Magnesium, B Vitamins & Vitamin C to help with migraines, fatigue, fibromyalgia, muscle spasms, cardiovascular concerns, and dehydration.

Why Fall Is the Season to Focus on Immunity

Cold and flu season and Colorado's climate stack the deck against you:

  • High altitude accelerates fluid loss
  • Dry air pulls moisture from your body all day long
  • Active lifestyles add training and recovery demands
  • Travel and indoor crowding increase exposure
  • Busy schedules push self-care to the bottom of the list

Hydration plays a crucial role in supporting immune function and overall health, and staying ahead of it through fall helps maintain optimal hydration and combat fatigue during busy schedules.

How IV Hydration Supports Your Immune System

A liter of saline restores fluid and electrolyte balance more efficiently than drinking alone, so IV support can complement drinking fluids when faster rehydration is needed, with less GI distress for many people.
Because saline matches the osmolarity of plasma in your cells, IV hydration delivers fluids, electrolytes, B vitamins, vitamin C, amino acids, and additional vitamins directly into the bloodstream for maximum absorption, which can support the body at the cellular level while bypassing limitations of the digestive system. That supports:

  • Energy and stamina
  • Cellular health and optimal cellular function
  • Mental clarity
  • Skin health
  • Overall well-being

Vitamin C supports collagen formation and boosts immune defenses.

Glutathione is considered a master antioxidant for cellular health and enhances the body's ability to neutralize toxins.

Alpha-Lipoic Acid helps neutralize free radicals and may help maintain healthy skin and blood sugar levels. Pro-Tip: If you’re interested in ALA, reach out prior to your appointment, as our team may need to custom order it for you!

A note on the evidence: IV therapy has validated medical uses for people with nutrient absorption issues. Medical organizations note that proven benefits for otherwise healthy individuals are more limited.


Best IV Drips for an Immune System Boost in Fall

Not every drip does the same job. For fall, most clients start with formulas selected around specific wellness goals, whether that means immunity, recovery, energy, or hydration.

Browse our immunity IV drips to compare options, or see the full IV menu and pricing if you're weighing recovery or energy formulas too. Some options are built as personalized care plans tailored to different wellness goals.

Popular pairings this time of year:

  • Immunity drip - first line of defense during cold and flu season
  • Hydration + electrolytes - for altitude, travel, and dry air
  • Recovery formulas - for athletes stacking hard training days and aiming for faster recovery after intense blocks
  • NAD+ - for energy, focus, and longevity support

Some blends also use arginine to support blood flow and enhance exercise performance.

Glutamine can aid in muscle recovery and immune support.

What to Expect at Your First Session

Sessions are simple and unhurried:

  1. Meet your nurse, nurse practitioner or paramedic. You'll talk with one of our registered nurses, nurse practitioners or paramedics about how you're feeling so your visit is tailored to your budget and goals.
  2. Choose your IV cocktail from the menu as the right treatment for your visit.
  3. Vitals and brief medical history before anything is administered.
  4. Relax while it drips. Vitamin IV cocktails typically run 45 minutes to an hour. NAD+ IVs may take up to two to three hours due to a slower drip rate.

If available, zero-gravity massage chairs add to the comfort of the lounge experience.

Need quiet? Most locations have a private room. Need to work? Lounge chairs have built-in chargers and complimentary WiFi.

NAD+ for Energy and Longevity

Onus is one of the few IV bars offering NAD+, an essential coenzyme for cellular energy production. Our bodies retain it less effectively as we age — part of why kids seem to have limitless energy and adults feel wrung out by 3 p.m. Some clients also pair IVs with vitamin injections for more targeted support.

Vitamin B12 injections can support energy, cognitive function, and muscle function. Alpha-Lipoic Acid helps neutralize free radicals and supports cellular energy.

Supplementing NAD+ may support:

  • Higher, steadier energy levels
  • Mental clarity and focus
  • DNA repair
  • Healthy aging

What Makes Onus Different

Built on ER standards. Our medical director is a board-certified ER physician, and we only hire staff with 2+ years of emergency care experience. Most of our team performs 10–30 IV starts a day. Onus also offers advanced therapies designed to support broader wellness objectives. We can also support weight loss with customized plans built around individual needs and challenges. As part of a supervised plan, injections may help regulate appetite and promote fullness. 

These programs can enhance overall body function and may support healing while helping with weight management. Lipolean & GLP1 injections support fat metabolism, enhance energy levels, and aid weight management. Vitamin D injections support bone health and immune function. Glutathione injections enhance detoxification and cellular health.

The B.O.S.S. delivery system. Most clinics take a "set it and forget it" approach. Our proprietary system respects your time, your comfort, and the efficiency you'd expect from a real investment in your health, helping you maintain progress over time toward optimal health.

Is IV Therapy Right for You?

We screen for medical conditions to help match treatment to your individual needs and wellness journey, and risks can include infection, vein irritation, and fluid overload. If you're strongly needle-averse, this may not be your thing (though it's simpler than giving blood).

It tends to be a great fit if you're:

  • An athlete putting real stress on your body
  • A parent keeping up with an active family
  • A frequent traveler dealing with jet lag and long-haul flights
  • Anyone seeking relief or a seasonal boost

Some people also use IV therapy proactively to stay healthy.

Book Your Fall Immunity Drip

One good decision leads to another. Whether that's a workout, a better meal, or an IV drip with us!

Explore immunity IV drips or view the full menu and pricing to choose the services that match all the benefits you want most, like hydration, energy, or recovery.
Onus IV has locations across Colorado, with nurses and advanced paramedics administering every infusion and providing personalized care aligned with each client's wellness goals.

Frequently Asked Questions

Most vitamin IV cocktails take 45 minutes to an hour. NAD+ runs two to three hours.

Many clients come in every 2-4 weeks through fall and winter, and some use regular visits as ongoing wellness support during that stretch. Your provider can help you find the right cadence to maintain progress toward your wellness goals.

IV delivery bypasses digestion, so more of what you're taking in actually reaches your bloodstream.

Yes. Mobile IV options are available if you'd rather stay home or host a group. Note: Individual in-home appointments are available in Fall 2026.