Vitamin & Mineral Symptom Checker

Select all symptoms that apply. The checker ranks possible nutritional deficiencies and suggests what to discuss with a pharmacist, GP or dietitian.

Important: This tool cannot diagnose a deficiency and should not be used to self-prescribe high-dose supplements. Many symptoms overlap with non-nutritional causes. For persistent, severe, sudden or worrying symptoms, speak to a GP or NHS 111. Chest pain, severe breathlessness, fainting, one-sided weakness, confusion, black stools, coughing blood, or suicidal thoughts require urgent medical help.

1. Choose symptoms

No symptoms selected yet.

2. Results

Generated from selected symptoms in the Vitamin & Mineral Symptom Checker.

Select symptoms to see possible deficiencies.

Supplement safety notes: Avoid high-dose vitamin A if pregnant or trying to conceive unless prescribed. Do not take more than 100 micrograms / 4,000 IU vitamin D daily unless advised. High-dose folic acid can mask B12 deficiency. Iron supplements can be harmful if you are not deficient.

How to use this responsibly

This is a screening aid, not a diagnosis. The safest next step is usually a blood test or professional advice, especially for B12, folate, vitamin D and iron. Consider food intake, medical conditions, medicines, alcohol intake, gut problems, heavy periods, pregnancy, vegan or vegetarian diet, and limited sunlight exposure.

Evidence base used: NHS pages on vitamins and minerals, vitamin D, B vitamins/folate, vitamin K and iron deficiency anaemia; NHS Inform on B12/folate deficiency; NIH Office of Dietary Supplements B12 fact sheet; Healthdirect vitamin C deficiency; UK government and Patient.info vitamin A deficiency guidance.