7 Little-Known Myers Cocktail Negative Side Effects

In this article, we’ll go over the most common Myers Cocktail negative side effects.

The Myers Cocktail is a popular vitamin and mineral intravenous (IV) therapy used to treat various conditions, such as migraines, Lyme disease, and fatigue.

While Myers Cocktail is generally considered safe, you should be aware of a few potential Myers cocktail negative side effects. 

What Is a Myers Cocktail?

A Myers cocktail is an intravenous (IV) vitamin drip Dr. John Myers developed in 1954.

The Myers cocktail contains vitamins and minerals that help with chronic conditions such as fatigue, asthma, fibromyalgia, migraines, and more.

Myers cocktail is sometimes called a “vitamin IV” or a “nutrient IV.” It usually contains vitamins B Complex, B12, Vitamin C, Zinc, Magnesium, magnesium, and calcium.

Some Myers cocktail recipes also include glutathione, an antioxidant that is thought to protect cells from damage.

The Myers cocktail is sometimes used to treat fatigue, anxiety, migraines, and other conditions. It is also a hangover remedy to boost energy levels and immunity.

7 Myers Cocktail Negative Side Effects

The Myers cocktail therapy has seen a massive increase over the years. You will also find clinics open to offer this therapy.

With its benefits to those who use it, most people consider it a go-to option to boost their overall health. You should know the most common Myers cocktail negative side effects.

1. Muscle Cramps or Weakness

One of the Myers cocktail’s negative side effects is muscle cramps or weakness. Magnesium is one of the main ingredients in Myers Cocktail.

While low magnesium can cause muscle weakness and cramps, the opposite is also true. Too much magnesium, especially when the infusion has been administered too quickly, can cause muscle cramps or pain.

Further, people who suffer from kidney disease and alcoholism can have muscle weakness and abnormal heart rhythms because of their magnesium intake.

2. Low Blood Pressure and Fainting

Low blood pressure (hypotension) is among the Mylers cocktail negative side effects some people experience

If the infusion is infused too quickly, you may start to feel lightheaded, which can cause fainting. Lightheadedness is due to the magnesium in the Myers cocktail being a vasodilator.

Lightheadedness may also indicate low blood pressure; if detected, the infusion should be discontinued immediately until the symptoms subside.

3. Excessive Heat

During the administration of the Myers Cocktail, people noted a sense of warmth. While the heat may not bother some, others complain that the heat is excessive.

Excessive heat can cause nausea, sweating, dizziness, and palpitations.

4. Allergic Reactions or Irritation Related to IV Placement

Some people experience irritation or a burning sensation in the area of injection. The burning sensation varies from person to person.

In addition, others can have allergic reactions to Myers’s cocktail due to some ingredients.

One common allergic reaction is anaphylaxis. Anaphylaxis can be a life-threatening allergic reaction that starts immediately when a person is exposed. Vitamins and minerals in excess might have negative effects.

As one of Myers cocktail’s negative side effects, anaphylaxis can be caused by thiamine. An increased level of thiamine in the body may cause a mild or severe allergic reaction.

5. The Cocktail Can Lead to Infections

The intravenous treatment of Myers’s cocktail involves injecting directly into the vein. The injected area may become infected if contamination occurs during or immediately after the injection.

In addition, the IV line poses a risk of infection. When the line is put into your vein, bacteria can enter your body through the tube.

Ensure the IV site is properly disinfected before administering to avoid negative Myers cocktail side effects.

6. Can Lead to Fluid Overload

The Myers Cocktail is characterized by having a high-dose vitamin infusion, which can lead to fluid overload (hypervolemia).

Fluid overload is defined as having too much liquid in the body. It can temporarily raise your blood pressure and lead to difficulty breathing.

Myers cocktail is not recommended for people with heart conditions and high blood pressure because its high vitamin composition could lead to fluid overload.

A fluid overload could permanently damage the kidney, brain, and heart.

7. Myers Cocktail Can Cause Blood Clots

Blood clots are one of the negative effects of any IV therapy. A blood clot, one of the negative Myers cocktail side effects, is the blood mass that forms when platelets, proteins, and cells in the blood stick together.

What are the Benefits of using Myers cocktails?

  • Improved immune function: vitamin C is essential to immune system function.
  • Improved mood: The Myers cocktail includes B vitamins that help in optical and may help improve mood.
  • Increased energy and alertness: The Myers cocktail contains several vitamins and antioxidants that help maintain the brain and body’s full functionality. Optimum general body organs functionality makes one feel energetic and alert.
  • Reduced muscle spasms and cramps: magnesium helps reduce muscle spasms and cramps.

How Should One Feel After a Myers Cocktail?

After injection, you might experience some negative Myers cocktail side effects, such as soreness or rash at the injection site.

You can also feel increased heat, lightheadedness, and muscle cramps; in some cases, some people faint.

However, when these side effects pass, you will feel more energized and focused. In addition, the Myler’s Cocktail can boost your moods, makes you feel relaxed, and generally boosts your overall well-being.

How Much Magnesium Is in a Myers Cocktail?

Myers cocktails are composed of multiple elements. It contains 5 mL of magnesium chloride hexahydrate (20%).

The varying elements’ concentration varies depending on the severity and the treated condition.


Since Myers’ discovery in 1954, it has continuously increased in usage. A lot of people have accepted it as their nutrient supplement of choice.

The increase has been attributed to its multiple nutrients and effectiveness as it is injected directly into the bloodstream.

Myers cocktail has many beneficial effects, but just like any other supplement, it has some drawbacks, which you must pay attention to while planning to use.

The negative Myers cocktail side effects differ from one person to the other. So, it is best practice to work with your doctor to reduce the possible negative effects and for maximum nutritional value. 

Your body’s nutritional needs should be identified before administration; this will ensure you get the right nutritional percentage mix.

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