cod liver oil capsules

Vitamin D Cautions

Certain people should not take vitamin D supplements without first consulting their doctor for advice:

  • People with cardiovascular disease
  • People with chronic diarrhoea
  • People with epilepsy
  • People with gastrointestinal problems
  • People with kidney, liver or pancreatic disease
  • People with sarcoidosis
  • Women that are trying to get pregnant

Toxic Levels of Vitamin D

  • Acute toxicity: Vitamin D is toxic at doses greater than 1000mcg (40000 IU) per day if taken for 1-4 months.
  • Chronic toxicity: Doses of vitamin D higher than 75mcg (3000 IU) can produce toxicity symptoms if taken over many years.
Certain people should not take high levels of vitamin D supplements without discussing it with their medical practitioner

Overdosage and Toxicity Symptoms

Vitamin D can produce the following toxicity symptoms:

  • Abdominal cramps
  • Constipation
  • Diarrhoea
  • Dry mouth
  • Elevated blood calcium levels
  • Headache
  • Increased thirst
  • Lethargy and feeling tired
  • Loss of appetite
  • Mental confusion
  • Metallic taste in the mouth
  • Nausea
  • Vomiting

In addition to the above toxicity symptoms, overdosage of vitamin D supplements can deposit of the elevated calcium in various tissues in the body (such as blood vessels and the kidney), which could cause serious and life-threatening problems.

People who experience any of the above toxicity symptoms should discontinue their vitamin D supplements and see their doctor for advice.

Overdosage and toxicity is more likely to occur from taking too many supplements, whereas dietary intake of vitamin D is highly unlikely to cause overdosage.

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