IV therapy risks and side effects: what to know

An IV puts fluid and nutrients directly into a vein through a needle and a small line left in place. That makes it a medical procedure, with medical risks. This page lists them the way a careful clinician would.

The common ones: local effects

StatPearls, a clinical reference hosted by the National Library of Medicine, lists the local complications of a peripheral IV:

• Infiltration. Fluid leaks from the vein into the surrounding tissue. The area swells and feels cool. The nurse stops the drip and moves the site.
• Phlebitis. Inflammation of the vein. The site is tender, warm or red along the vein. It can progress to infection if ignored.
• Bruising or bleeding at the site. Common, usually minor, and more likely for people on blood thinners.

Call or text 385-521-5237 if you have questions after a visit.

The less common ones

Too much of a vitamin. Cleveland Clinic notes that excess vitamins can cause nausea or dizziness and, at worst, serious harm. Doses should be ordered for you, not chosen from a menu.

Fluid overload. An IV adds fluid directly to the bloodstream. Cleveland Clinic lists heart failure, kidney conditions and cirrhosis among the causes of hypervolemia, too much fluid in the body, and notes that IV fluids can contribute. Symptoms include swelling in the arms and legs, bloating, quick weight gain, and, in serious cases, high blood pressure and shortness of breath.

Ingredient-specific cautions. The NIH notes that magnesium toxicity risk rises with impaired kidney function. The National Cancer Institute states that high-dose vitamin C should not be given to people with G6PD deficiency, and that people likely to form kidney stones should not receive IV vitamin C.

Medication interactions. Some IV ingredients can interact with medications. Bring the full list to your clearance, including supplements.

Allergic reactions. Uncommon, but possible with any substance given into a vein. Your nurse stays with you for the whole visit.

What lowers the odds

The order of a careful visit exists for a reason:

1. A licensed provider reviews your history, medications and the ingredients being considered, and decides whether an IV is appropriate. Some people are not cleared.
2. A licensed nurse checks your vitals before anything starts.
3. Sterile, single-use supplies.
4. The nurse stays for the whole drip and checks your vitals again before leaving.

This is how RESRV works, step by step, on how it works.

When to call 911

If anything feels like an emergency during or after any IV, from any provider: trouble breathing, chest pain, confusion, fainting, or swelling of the face or throat. Do not wait for a call back.

This guide is general education, not medical advice. Talk to a qualified clinician about your own health.