Best Preconception Vitamins UK 2026: A Buyer's Guide
Best Preconception Vitamins UK, 2026
What to take when you are trying to conceive, planning to, or simply preparing your body in advance. Seven UK preconception vitamins compared honestly. Updated June 2026.
When should you start a preconception vitamin?
NHS guidance is that women trying to conceive (and at least the first 12 weeks of pregnancy) should take a daily 400µg folic acid supplement. Most fertility nutritionists recommend starting 90 days before you start trying actively, because that is roughly how long it takes for a follicle to mature.
If you are 35 or over, have been trying for over 12 months, are preparing for IVF, or are recovering from a miscarriage, the case for a higher-strength formula is stronger.
What to look for
Folate form
Around one in three UK adults carry an MTHFR gene variant that reduces their ability to convert synthetic folic acid into active 5-MTHF. 5-MTHF skips the conversion step, which is why fertility nutritionists prefer it.
B12 form
Methylcobalamin and adenosylcobalamin are the two active forms of B12. Cyanocobalamin is a synthetic form that needs to be converted. Worth checking the label.
CoQ10 dose
For egg quality support, fertility research typically uses 200 to 600mg daily. Doses below 50mg are usually too low to make a meaningful difference for women 35+.
Vitamin D source
Most cheap multivitamins use animal-derived D3. Vegan D3 from lichen exists, is well-absorbed, and is increasingly standard for premium brands.
Capsule shell
Vegan HPMC capsules (vegetable cellulose), ideally delayed-release so the contents bypass stomach acid. Avoid gelatin, magnesium stearate, and titanium dioxide.
Manufacturing and testing
UK GMP-certified manufacturing and independent third-party batch testing for heavy metals, microbiology, and label-claim verification. A brand should publish a Certificate of Analysis on request.
Seven UK preconception vitamins compared
| Product | Folate (form / dose) | B12 (form / dose) | CoQ10 | Vit D | Vegan | Price |
|---|---|---|---|---|---|---|
| BioMirco Fertility Advance | 5-MTHF 800µg | Methyl+adeno 750µg | 300mg | D3 vegan 4000 IU | Yes | £££ |
| BioMirco Fertility Focus | 5-MTHF 533µg | Methyl+adeno 500µg | 200mg | D3 vegan 2000 IU | Yes | ££ |
| Ovum Time to Conceive | 5-MTHF 800µg | Methyl 10µg | 200mg | D3 4000 IU | Vegetarian | £££ |
| Proceive Max Women | 5-MTHF 400µg | Methyl 25µg | 70mg | D3 vegan 1400 IU | Yes | ££££ |
| Pregnacare Conception Max | 5-MTHF 400µg | Methyl 25µg | 50mg | D3 animal 1000 IU | No | ££ |
| Pregnacare Conception | Folic acid 400µg | Cyano 20µg | 20mg | D3 animal 800 IU | No | £ |
| Zita West Vitafem | 5-MTHF 400µg | Methyl 20µg | 40mg | D3 1000 IU | Yes | ££ |
| Wild Nutrition Food-Grown | Food-grown 400µg | Food-grown 200µg | None | D3 400 IU | Vegetarian | £££ |
Reading the table. Green = at or above what fertility nutritionists typically look for. Amber = present but at a modest dose. Red = below what we would consider meaningful for fertility support, or uses the synthetic form.
Our recommendation
If you are 35+ or preparing for IVF: BioMirco Fertility Advance. Highest CoQ10 dose, both active B12 forms at the highest dose, 800µg of 5-MTHF folate, vegan vitamin D3.
If you are under 35 and starting: BioMirco Fertility Focus. Same active forms, moderated doses, designed to continue safely through the first trimester.
If price is the deciding factor: Pregnacare Conception is the most affordable. It uses synthetic folic acid and cyanocobalamin B12, but does cover the NHS-recommended folate dose for women without MTHFR concerns.
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