Supplements of calcium and vitamin D

Condition of abnormally high storage levels of vitamins, which can lead to various symptoms as over excitement, irritability, or even toxicity.

- Hypervitaminosis

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Organic molecule that is an essential micronutrient which an organism needs in small quantities for the proper functioning of its metabolism.

A bottle of B-complex vitamin pills
Calcium combined with vitamin D (as calciferol) supplement tablets with fillers.
Jack Drummond's single-paragraph article in 1920 which provided structure and nomenclature used today for vitamins

Vitamins A and D can accumulate in the body, which can result in dangerous hypervitaminosis.

Vitamin deficiency

Condition of a long-term lack of a vitamin.

Jack Drummond's single-paragraph article in 1920 which provided structure and nomenclature used today for vitamins

Conversely, hypervitaminosis refers to symptoms caused by vitamin intakes in excess of needs, especially for fat-soluble vitamins that can accumulate in body tissues.

Drug overdose

Ingestion or application of a drug or other substance in quantities much greater than are recommended.

A photograph showing a person who had overdosed
Timeline of US drug overdose death rates by race and ethnicity. Rate per 100,000 population.
Activated carbon is a commonly used agent for decontamination of the gastrointestinal tract in overdoses.
U.S. yearly overdose deaths from all drugs.<ref name="NIDA-deaths">Overdose Death Rates. And {{webarchive|url=https://web.archive.org/web/20151128091723/http://www.drugabuse.gov/related-topics/trends-statistics/overdose-death-rates |date=2015-11-28}}. By National Institute on Drug Abuse.</ref>
U.S. yearly overdose deaths involving benzodiazepines.<ref name="NIDA-deaths" />
U.S. yearly overdose deaths involving cocaine.<ref name="NIDA-deaths" />
U.S. yearly overdose deaths involving heroin.<ref name="NIDA-deaths" />
U.S. overdose deaths involving all opioids. Deaths per 100,000 population.<ref name=CDC-opioids>Opioid Data Analysis and Resources. Drug Overdose. CDC Injury Center. Centers for Disease Control and Prevention. Click on "Rising Rates" tab for a graph. See data table below the graph.</ref>
U.S. yearly deaths involving prescription opioids. is a category dominated by illegally acquired fentanyl, and has been excluded.<ref name="NIDA-deaths" />
US yearly overdose deaths, and the drugs involved. Among the 70,200 deaths in 2017, the sharpest increase occurred among deaths related to fentanyl and fentanyl analogs with 28,466 deaths.<ref name=NIDA-deaths/>

Vitamin poisoning


State of low muscle tone , often involving reduced muscle strength.

Oil painting depicting Claude Bernard, the father of modern physiology, with his pupils


List of systemic diseases with ocular manifestations

Eye condition that directly or indirectly results from a disease process in another part of the body.

Scanning electron micrograph of Mycobacterium tuberculosis, a species of pathogenic bacteria that cause tuberculosis

Hypervitaminosis A, B, and D


Form of malnutrition in which the intake of nutrients is oversupplied.

A malnourished child in an MSF treatment tent in Dolo Ado.

Oversupplying a specific nutrient, such as dietary minerals or vitamin poisoning.

Health freedom movement

Libertarian coalition that opposes regulation of health practices and advocates for increased access to "non-traditional" health care.

17 August 1860 edition of Le Libertaire, Journal du mouvement social, a libertarian communist publication in New York City

Very rarely, large doses of some vitamins lead to vitamin poisoning (hypervitaminosis).