NHS Doctors Warn Vitamin D Users About Four Key Overdose Symptoms

NHS Doctors Warn Vitamin D Users About Four Key Overdose Symptoms

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Updated Jan 22, 2026 | 07:16 AM IST

SummaryNHS doctors warn against overdosing on vitamin D supplements, advising a daily 10 microgram dose in winter. Experts say excess intake can cause thirst, frequent urination, nausea, aches, cramps, headaches and brain fog. With 42% UK adults supplementing, overdose cases and hospitalizations for hypercalcaemia have been reported by NHS England data.

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