Why Are IV Fluids Used in POTS Treatment? Benefits and Risks Explained

If you live with POTS, you've probably wondered whether POTS IV fluids could offer relief that daily hydration alone doesn't. They work by quickly increasing blood volume, which can ease symptoms like dizziness and fatigue. 

However, they're not something doctors typically recommend using regularly, and they come with real considerations around cost, access, and risk.

This guide breaks down how POTS IV fluids work. Discover when they're actually recommended, the risks of regular use, and the alternatives most patients rely on day-to-day. By the end, you'll have a clearer picture of where IV fluids fit into a bigger POTS management plan.

Key Takeaways

• Fast relief, not a fix: POTS IV fluids can quickly ease symptoms by boosting blood volume, but they don't treat the underlying autonomic dysfunction, and effects usually fade within a day or two.
• Not meant for routine use: The Heart Rhythm Society and Canadian Cardiovascular Society both advise against long-term IV therapy, reserving it for emergencies, surgery, or confirmed hypovolemia.
• Access has real limits: Insurance restrictions and risks like infection and vein damage make regular IV fluid therapy difficult to obtain and sustain.
• Daily management leans on other tools: Oral hydration, salt intake, and compression garments remain the safer, more accessible foundation for most patients.

Table of Contents

• Why POTS Patients Often Have Low Blood Volume
• How Do IV Fluids Help with POTS Symptoms?
• When Are IV Fluids Typically Prescribed for POTS?
• What Are the Risks of Regular IV Fluid Use?
• The Challenge of Accessing IV Fluid Treatment for POTS
• Alternatives to IV Fluid Therapy in POTS
• How Much Does IV Fluid Therapy and Hydration Bars Cost?
• Consider All Options Before Seeking IV Fluid Therapy for POTS

Why POTS Patients Often Have Low Blood Volume

Many people with POTS have a lower-than-normal blood volume, a condition called hypovolemia.⁵ This matters because when there's less circulating fluid in the body, it becomes harder to maintain stable blood pressure when standing up. This is where many POTS symptoms originate.

Researchers point to a few possible explanations for this pattern:

• Excessive loss of sodium and water through the kidneys
• Impaired hormonal regulation of fluid balance, including dysfunction in the renin-aldosterone system that normally helps the body retain fluid
• Increased dehydration risk from symptoms like vomiting, diarrhea, or difficulty maintaining adequate oral intake

When blood volume runs low, the heart has to work harder to compensate. This often results in the rapid heart rate increase that defines POTS upon standing. It’s the underlying reason hydration, whether oral or intravenous, plays such a central role in managing the condition.

How Do IV Fluids Help with POTS Symptoms?

IV fluids for POTS work by quickly increasing blood volume, which can help improve circulation and reduce common POTS symptoms like dizziness, lightheadedness, and fatigue.

For POTS patients who struggle with dehydration or low blood volume, an infusion of saline or lactated Ringer's solution can provide rapid relief.¹

Types of POTS IV Fluids

View the types of fluids that are typically used to help manage POTS symptoms.

Fluid Type	Composition	When It's Typically Used
Normal Saline (0.9% sodium chloride)	Closely matches the natural electrolyte concentration of blood⁸	The standard, first-line IV fluid choice for POTS
Lactated Ringer's	Contains sodium chloride plus additional electrolytes	Used in specific cases requiring broader electrolyte correction

Learn more about POTS symptom triggers to stay proactive.

Research on Fluid Therapy for POTS

Research has shown promising results for IV fluid therapy in POTS. Studies have found that patients receiving IV saline experienced significant reductions in standing heart rate increases, suggesting improved circulation.¹

In one long-term study, 93% of patients reported feeling better after receiving occasional IV saline treatments.² Discover additional coping strategies for managing your POTS symptoms.

Benefits of IV Fluids for POTS

The primary benefits of IV fluid therapy for POTS include:

• Quick increase in blood volume
• Improved circulation
• Reduced dizziness and lightheadedness
• Decreased fatigue in some patients

These benefits can provide rapid relief for POTS symptoms, potentially improving a patient's quality of life and ability to function in daily activities.³

However, it's important to note that while these results are encouraging, more research is needed to fully understand the long-term effects of IV treatment for POTS.

When Are POTS IV Fluids Typically Prescribed?

Despite their potential benefits, IV fluids are not typically prescribed as a regular treatment for POTS. They're most often used in situations like:

• During severe symptom flares
• After episodes of significant dehydration
• In emergency situations where immediate volume expansion is necessary³

While POTS IV fluids can be effective in certain situations, they're not typically prescribed as a regular treatment due to associated risks and the availability of safer alternatives.

Recommended Use	Not Recommended
Emergency dehydration, such as from gastroenteritis or severe vomiting	Routine or chronic infusions for everyday symptom maintenance
Before and after surgery, when oral intake is disrupted	Regularly scheduled infusions without a specific acute trigger
Severe gut-related conditions that limit oral fluid intake	Long-term reliance on IV fluids before you’ve given oral options a try
Documented hypovolemia confirmed by clinical or lab evidence, such as low blood pressure, abnormal electrolytes, or increased heart rate on standing	Use as a first-line treatment before trying oral hydration, salt loading, and other standard approaches

Both the 2015 Heart Rhythm Society Expert Consensus Statement and the 2020 Canadian Cardiovascular Society Position Statement recommend against the routine, long-term use of intravenous hydration for POTS, citing a lack of proven efficacy and real risk of complications like infection and thrombosis.⁷

What Are the Risks of Regular IV Fluid Use?

While IV fluids can provide quick relief, regular use comes with several potential risks:

• Infection: Any time there's an entry point into the bloodstream, there's a risk of infection.
• Vein Damage: Repeated IV insertions can lead to scarring and hardening of veins.
• Electrolyte Imbalances: Frequent infusions can disrupt the body's delicate electrolyte balance.
• Fluid Overload: Too much fluid can strain the heart and lungs.
• Complications from Long-Term Access: For patients needing regular treatments, long-term IV access methods like central venous catheters carry risks of serious infection, blood clots, and in rare cases, more severe complications.³

These risks are a primary reason why many doctors hesitate to prescribe regular IV treatments for POTS patients.

What Happens During an IV Fluid Session

If you're prescribed IV fluids for POTS, the process is straightforward and typically takes place in a clinical setting under medical supervision.

A trained provider inserts a small IV catheter into a vein, using sterile technique to reduce infection risk. The catheter connects to a bag of fluid, most often normal saline, which is infused over roughly 30 to 90 minutes.⁶ This depends on the volume needed and how well the patient tolerates it.

Throughout the session, your blood pressure, heart rate, and symptoms are typically monitored, along with the insertion site for any signs of swelling or discomfort. Many patients report feeling some improvement in symptoms like dizziness or fatigue during or shortly after the infusion, though improvement varies from person to person.

Learn more about other hydration tips for POTS to help mitigate symptoms.

How Long Do the Effects of IV Fluids Typically Last?

The benefits of a single IV fluid session are temporary. Many patients notice improvement in symptoms like heart rate response, lightheadedness, and brain fog within minutes of starting an infusion. That relief typically fades within hours to a day or two.³

Because the effects don't last, IV fluids are best understood as short-term support during a flare-up, not an ongoing maintenance strategy.

Is IV Fluid Therapy a Cure for POTS?

IV fluids can offer meaningful, short-term symptom relief. However, they don't address the underlying autonomic nervous system dysfunction that causes POTS. Once the infused fluid is redistributed and eliminated by the body, symptoms typically return to their baseline.³

The Challenge of Accessing IV Fluid Treatment for POTS

For patients who believe they might benefit from regular IV fluid therapy, accessing this treatment can be challenging:

• Healthcare Provider Reluctance: Medical guidelines do not typically endorse regular IV fluid therapy for POTS, and many doctors only prescribe it in emergency cases where patients experience significant dehydration or require volume expansion after surgery or illness.
• Insurance Coverage Issues: Many insurance companies classify IV fluids for POTS as "experimental" or "not medically necessary," which limits coverage and makes it expensive for patients to access regularly.
• Limited Availability: Access to regular IV therapy outside of emergency situations remains limited, as most doctors focus on safer, long-term management options for POTS patients.
• Complications and Risks: The potential risks associated with repeated IV therapy, such as infection, vein damage, and electrolyte imbalances, make doctors hesitant to prescribe this as a long-term solution.
• Cost Barriers: Without insurance coverage, the expense of regular IV treatments can be prohibitive for many patients.³⁴

Overall, regular use of IV fluids for POTS is far from common, with many patients and healthcare providers opting for safer, more accessible alternatives.

Buoy Quick Tip: If you're considering IV fluid therapy for your POTS symptoms, discuss the potential benefits and risks thoroughly with your healthcare provider. They can help you weigh the pros and cons based on your individual health situation.

Why Insurance Often Won't Cover Regular IV Fluids

Insurance denials for IV fluid therapy typically follow specific medical policy criteria. Many insurers classify long-term, outpatient IV hydration for POTS as investigational and not medically necessary, since there's no controlled research showing it works better than other established treatments.⁵

Short-term IV hydration is more likely to be covered when there's documented evidence of low blood volume, such as: 

• Low blood pressure
• Abnormal electrolyte levels
• Diagnosis expected to cause significant fluid loss

Without that kind of documentation, coverage is often denied.

Alternatives to POTS IV Fluids

Given the challenges and risks associated with IV fluid therapy, many POTS patients find success with alternative strategies:

• Oral Hydration: Increasing fluid intake, especially with electrolyte-rich beverages, can help maintain blood volume. Get more hydration tips in our POTS Hydration Guide.
• Compression Garments: Use these to prevent blood pooling in the lower extremities and help maintain blood pressure.
• Lifestyle Changes: Elevate the head of your bed slightly (4–6 inches) to help retain fluid overnight. Under medical supervision, increase salt intake to help retain more fluid. Buoy Rescue Drops are 6x stronger than regular liquid electrolytes and help add sodium to manage POTS symptoms.
• Exercise: Try recumbent exercise to improve circulation without the orthostatic stress of upright exercise.
• Medications: Some medications, like fludrocortisone, can increase blood volume, though they come with their own risks and side effects.

Combining these strategies and working closely with your healthcare provider can help develop a comprehensive management plan that doesn't rely on IV fluids. Explore additional supportive therapies for POTS.

IV Hydration vs. Oral Hydration at a Glance

Compare the differences between IV hydration and oral hydration below.

Factor	IV Hydration	Oral Hydration
Speed of relief	Fast, often within minutes	Gradual, builds over time with consistent intake
Duration of effect	Temporary, typically fades within hours to a day or two	Ongoing, as long as intake is maintained
Risk level	Higher (infection, vein damage, fluid overload)	Low
Accessibility	Limited, requires medical supervision and often isn't covered by insurance	High, can be managed independently at home

For more ways to manage your symptoms, check out our guide: Expert Tips on Managing POTS Symptoms.

How Much Does IV Fluid Therapy and Hydration Bars Cost?

For those who do pursue IV fluid therapy outside of a hospital setting, such as at hydration bars or infusion clinics, costs can be significant:

• Single sessions typically range from $200 to $400 per bag.
• Monthly costs for regular treatments can exceed $1,000.⁴
• These treatments are usually not covered by insurance when used for POTS management.

The high costs associated with IV fluid therapy, coupled with the lack of insurance coverage, make this treatment option financially challenging for many POTS patients.

It's important to weigh these costs against the potential benefits and consider more cost-effective, long-term management strategies.

Buoy Quick Tip: IV fluid therapy for POTS is often not covered by insurance. Many insurers consider it "experimental" or "not medically necessary" since it's not a standard first-line treatment. As a result, patients often face high out-of-pocket costs when seeking this therapy outside of emergencies or hospital settings.

Consider All Options Before Seeking IV Fluid Therapy for POTS

While IV fluids for POTS, particularly saline IV for POTS, can be a powerful tool for managing severe symptoms in certain situations, they come with significant risks, costs, and access challenges.

Before pursuing IV fluid therapy, consider exploring all available options, including lifestyle adjustments and alternative treatments.

Hydrate Safely with Buoy

For more information on managing POTS symptoms and staying hydrated, explore our POTS Resource Guides and consider trying Buoy's Rescue Drops to support your daily hydration needs without the risks associated with IV therapy.

Explore our specific solutions and the best electrolytes for POTS that we have to offer, so you can combat symptoms before they even start.

References

1. ¹Snapper, H. & Cheshire, W. P. (2022). Oral and Intravenous Hydration in the Treatment of Orthostatic Hypotension and Postural Tachycardia Syndrome. Autonomic Neuroscience: Basic & Clinical, 238, 102951. Retrieved from https://www.sciencedirect.com/science/article/pii/S1566070222000108
2. ²Ruzieh, M., Baugh, A., Dasa, O., Parker, R. L., Perrault, J. T., Renno, A., Karabin, B. L. & Grubb, B. (2017). Effects of Intermittent Intravenous Saline Infusions in Patients with Medication-Refractory Postural Tachycardia Syndrome. Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing, 48(3), 255–260. Retrieved from https://www.researchgate.net/publication/313506555_Effects_of_intermittent_intravenous_saline_infusions_in_patients_with_medication-refractory_postural_tachycardia_syndrome
3. ³Standing Up to POTS. (n.d.). Intravenous Fluids Guide. Retrieved from https://www.standinguptopots.org/resources/iv-saline
4. ⁴Forbes. (2023). What is IV Therapy? Benefits, Side-Effects, and Costs. Retrieved from https://www.forbes.com/health/wellness/iv-therapy/
5. ⁵South Carolina Blue Cross Blue Shield. (2025). IV Hydration - CAM 929 [Medical policy document]. Retrieved from https://www.southcarolinablues.com/web/public/brands/medicalpolicy/external-policies/iv-hydration/
6. ⁶Shlamovitz, G. Z. (2023). Intravenous cannulation technique. Medscape. Retrieved from https://emedicine.medscape.com/article/1998177-technique
7. ⁷Raj, S. R., Guzman, J. C., Harvey, P., Richer, L., Schondorf, R., Seifer, C., Thibodeau-Jarry, N., & Sheldon, R. S. (2020). Canadian Cardiovascular Society Position Statement on Postural Orthostatic Tachycardia Syndrome (POTS) and Related Disorders of Chronic Orthostatic Intolerance. Canadian Journal of Cardiology, 36(3), 357-372. PMID: 32145864
8. ⁸ACLS Certification Institute. (2024). Intravenous (IV) fluids explained. Retrieved from https://aclscertification.org/intravenous-iv-fluids-explained/