(Or a mix of all of the above.)

Multivitaminsare designed to supplement a balanced diet, not replace it.

What Causes Multivitamin Intoxication?

a photo of various supplements and vitamins

Photo:Getty Images

This can lead to production problems like contamination or inaccurate dosing, Li says.

(This can also lead to unexpected side effectsor no benefit at all.)

This underscores the importance of buying from reputable sources and looking for independent verification and certification, Bannan says.

Look for a seal on the label from a group likeConsumer Lab,NSF InternationalandUS Pharmacopeia (USP).

Can You Die from Multivitamin Intoxication?

Death from vitamin and mineral overdose is extremely rare.

And with certain vitamins and minerals, it can be dangerous or even fatal.

The symptoms you may experience depend on the levels and types of toxicity.

The symptoms of vitamin toxicity vary depending on the vitamin or mineral that has been overconsumed.

Some warning signs include vomiting, unusual weight loss, excessive hair loss, confusion and fatigue.

If these build up in the body, they can lead to adverse side effects.

In severe cases and with a select few vitamins and minerals, overdosing can be fatal.

If you take too many water-soluble vitamins, your body will simply excrete the extra through your urine.

So, with that in mind, ensuring youredrinking enough wateris helpful.

National Cancer Institute.Fat-Soluble Vitamins.

National Institutes of Health Office of Dietary Supplements.

Fact Sheet for Health Professionals.Vitamin K.

United States Consumer Product Safety Commission.Third Party Testing Guideance.

Anum Asif; Nauman Farooq.Vitamin D Toxicity.

StatPearls Publishing; 2023.

Kristen N. Owen; Olga Dewald.Vitamin E Toxicity.

StatPearls Publishing; 2023.

Ho-Wang Yuen; Wenxia Becker.Iron Toxicity.

StatPearls Publishing; 2023.

Jazmine M. Olson; Muhammad Atif Ameer; Amandeep Goyal.Vitamin A Toxicity.

StatPearls Publishing; 2023.

Nazia M. Sadiq; Catherine Anastasopoulou; Goonja Patel; Madhu Badireddy.Hypercalcemia.

StatPearls Publishing; 2023.