Vitamin D Toxicity

How it works

Risks & contraindications

Evidence quality

Highlighted claims

• True vitamin D toxicity, in the sense that vitamin D itself is the harmful agent, does not exist. — The Big Lie About Vitamin D
• Adverse symptoms from high-dose vitamin D are caused by downstream deficiencies in co-factors, primarily magnesium and vitamin K2. — The Big Lie About Vitamin D
• Vitamin D toxicity studies involve people taking hundreds of thousands of IU for months at a time, not typical supplementation doses. — 7 Ways to Boost Your ABSORPTION of Vitamin D
• The main side effect of vitamin D toxicity is hypercalcemia, which can raise kidney stone risk. — 7 Ways to Boost Your ABSORPTION of Vitamin D
• Wikipedia acknowledges that some symptoms attributed to vitamin D toxicity are actually due to vitamin K depletion. — The Big Lie About Vitamin D
• Magnesium deficiency alone can produce virtually every symptom attributed to vitamin D overdose. — The Big Lie About Vitamin D
• Drinking at least 2.5 litres of fluid per day prevents kidney stone formation associated with high-dose vitamin D. — 7 Ways to Boost Your ABSORPTION of Vitamin D
• Avoiding large-dose calcium supplements while taking high-dose vitamin D nearly eliminates toxicity risk. — 7 Ways to Boost Your ABSORPTION of Vitamin D
• In case studies of supposed vitamin D toxicity, patients are typically not taking magnesium or K2, and often use vitamin D2 rather than D3. — The Big Lie About Vitamin D
• Calcium is sometimes administered to patients with suspected vitamin D toxicity, which is counterproductive because hypercalcemia is the defining symptom. — The Big Lie About Vitamin D