Tools

Free supplement tools and data trackers

Her Vitals builds free, no sign-up tools that show the numbers supplement sellers rarely do: what a product costs per effective dose of the active ingredient, and what official NHS data says. Everything runs in your browser or comes from a named primary source. Information only, not medical advice.

Honest value tools

The numbers supplement sellers rarely show: whether you are overpaying, whether you need it at all, and whether the evidence stands up.

Are you overpaying for vitamins?

Enter a price, servings and active dose to see the cost per effective dose and whether it sits above a typical UK price band for that nutrient.

Do you actually need this supplement?

The honest NHS and EFSA verdict by life stage: recommended, situational or no good evidence, plus the cheaper or free alternative. Anti-sales by design.

Ingredient evidence scorecard

Score a supplement's headline claims against the EFSA and GB authorised health-claim register and NHS guidance, dated and sourced.

Supplement stack daily cost

Add your whole routine to see the real combined cost per day and per year, with a flag when the same nutrient appears twice.

Proprietary blend decoder

Why a proprietary blend hides per-ingredient doses, and a flag for when a blend is too small to hold an effective dose of its headline ingredient.

Safety and intake checkers

Upper safe limit checker

Check a daily amount against the NHS and EFSA tolerable upper intake guidance for each nutrient. A genuine safety service most sellers never show.

Recommended daily intake lookup

NHS reference daily intakes of key nutrients for women by life stage, from trying to conceive to over 50.

Cost per effective dose calculators

Price any UK supplement by what matters: per 10 mcg of vitamin D, per 100 mg of elemental magnesium, per gram of EPA + DHA, per 10 g of collagen, per mg of elemental iron, per 5 g of creatine, the NHS prenatal baseline, and per standardised ashwagandha dose. Eight calculators, NHS and EFSA reference figures, instant results.

Data trackers

UK HRT Prescribing Tracker

How much HRT the NHS in England dispenses each month, charted from official NHSBSA prescribing data: 1,056,986 items in June 2025, the latest published month. Updated 2026-06-11.

Information only, not medical advice. This tool is educational and is not a substitute for a registered clinician. It does not diagnose anything and does not recommend that you take any supplement. Always read product labels and speak to your GP or pharmacist before starting, stopping or combining supplements.

Research and data assets

UK Supplement Price-Per-Effective-Dose Index

Eight common supplements priced by their effective daily dose of the active ingredient, not by the pack, with the NHS or EFSA basis and a primary source for every figure.

Printables

Free printable checklists and food lists

Iron and magnesium food lists, a menopause symptoms checklist, a GP appointment prep sheet and a supplement audit worksheet that pairs with the checker above. No sign-up.

Verified UK figures live on our statistics page and our research data assets, and our guides explain the evidence by life stage, from trying to conceive to menopause and the senior years.

Oliver Mackman

Editor, Her Vitals

Oliver leads Her Vitals's editorial coverage of women's life-stage health and supplements. He curates and reviews existing branded products across trying to conceive, pregnancy, postnatal, perimenopause, menopause and the senior years, weighing what the evidence supports against guidance from bodies such as EFSA, the NHS and NICE, and is clear that the content is information rather than medical advice.

Last reviewed: 11 June 2026

Reviewed by Oliver Mackman, Editor. Editorial review against published guidance; not a clinical review.