How Often Can You Safely Get IV Therapy?
Why there's no single answer, the factors that set safe frequency, and warning signs that you're getting drips too often.
Read guideMinerals
Magnesium
Also known as: magnesium sulfate, magnesium chloride, Mg
A mineral for muscle and nerve function. Used in hospitals for migraines and low magnesium; wellness benefits are less clear.
Medically reviewed by Akash Bhagat, DO, FACEP
What the evidence supports
| Use | Evidence |
|---|---|
| Correcting low magnesium | Established |
| Acute migraine (emergency settings) | Emerging |
| Muscle cramps / relaxation in healthy people | Limited |
Common side effects
- Warmth and flushing
- Lightheadedness
- Burning at IV site if infused fast
Who should be cautious or avoid this
- Kidney disease — can accumulate
- Myasthenia gravis
- Heart block or slow heart rate
- Low blood pressure
What it is
Magnesium is a mineral involved in hundreds of enzyme reactions, including muscle contraction, nerve signaling, and heart rhythm.
Why it’s used in IV therapy
A core Myers’ cocktail ingredient. Clinics include it in recovery, migraine, and relaxation drips.
What the evidence says
IV magnesium is established for correcting low magnesium levels and is used in hospitals for several specific conditions. For migraine, emergency department studies show mixed but sometimes positive results. For healthy people seeking relaxation or cramp relief, evidence is limited.
Side effects and cautions
A warm, flushed feeling is very common, especially if it runs quickly — slowing the drip helps. Because the kidneys clear magnesium, people with kidney disease are at risk of buildup. Too much can slow the heart and lower blood pressure.