Every infusion carries some risk, and a clinic that tells you otherwise is not being straight with you. The good news is that IV therapy side effects are overwhelmingly mild, short-lived, and preventable with proper screening. Here is the full picture from our nursing team.
Common and expected
- A cool sensation up the arm as room-temperature fluid enters a warm vein. Normal, fades in minutes.
- A metallic or vitamin taste, especially with B vitamins and magnesium. Harmless.
- Warmth or flushing with magnesium or a fast rate. We slow the drip.
- Mild bruising or tenderness at the site for a day or two.
- Needing the bathroom soon after — you just received a liter of fluid.
- Bright yellow urine from riboflavin. Expected, not a problem.
Uncommon
- Lightheadedness or a vasovagal response during the stick. We recline you and it passes.
- Infiltration — fluid entering tissue instead of the vein, causing localized swelling. The nurse stops, removes the line, and restarts elsewhere. Usually resolves in a day.
- Phlebitis — vein irritation, more likely with high-osmolarity additives. Warm compresses; resolves.
- Nausea with NAD+ if the rate is too fast. Entirely rate-dependent and fixed by slowing down; see what to expect from NAD+.
Call us now — or call 911
Stop the infusion and get help immediately for any of the following:
- Difficulty breathing, throat tightness, or wheezing
- Hives or a spreading rash
- Chest pain or palpitations
- Swelling of the face, lips or tongue
- Fever, redness, streaking or worsening pain at the site in the days after — possible infection
Anaphylaxis to a vitamin infusion is rare, but our nurses carry emergency medication and follow a written protocol for exactly this reason.
Who should not get IV therapy
- Kidney disease — impaired clearance of fluid volume and certain minerals.
- Congestive heart failure — volume loading can precipitate decompensation.
- G6PD deficiency — a hard contraindication to high-dose vitamin C, which is why we require the test.
- Pregnancy — only with obstetric clearance and a restricted formulation.
- Uncontrolled hypertension, or a known allergy to a component.
These are why our intake asks what it asks. Screening prevents the large majority of adverse events; see also is IV therapy safe.
How to reduce your risk
Eat something beforehand, arrive hydrated (it makes the stick easier), disclose every medication and supplement including anything over the counter, and tell the nurse the moment something feels off. A slower rate solves most discomfort.
Frequently asked questions
How long do IV therapy side effects last?
Taste and warmth resolve during or shortly after the drip. Bruising can last a few days.
Can IV therapy make you feel worse?
Occasionally people feel briefly tired or headachy afterward, usually from the underlying illness rather than the drip. Persistent worsening is worth a call.
Is the needle painful?
A brief pinch. The catheter is flexible and stays comfortable once placed.
Who do I call with a concern?
Reach our clinical team any time via our contact page or at 1-800-905-4252.
