A fertility brand shaped by experience, care and evidence.
Fertility Advance
Our highest-strength preconception formula. 26 research-backed nutrients in delayed-release vegan capsules, built for women 35+ or trying to conceive for 12+ months.
Higher doses where it counts
Above what the research recommends, not below
CoQ10 300mg
One of the highest doses in a multivitamin for UK fertility category
B12 in two active forms
methylcobalamin + adenosylcobalamin
Dosing: 3 capsules a day
Start at least 90 days before active TTC
Built around four things most prenatals get wrong.
Active 5-MTHF folate
Active 5-MTHF folate
Up to 40% of women can't convert synthetic folic acid into its usable form. We use the active form your body uses directly.
Two active B12 forms
Two active B12 forms
Methylcobalamin for nervous system. Adenosylcobalamin for cellular energy. Most use one. We use both.
Delayed-release capsules
Delayed-release capsules
Most release in the stomach where acid degrades them. Ours opens in the small intestine, where absorption happens.
Therapeutic doses
Therapeutic doses
10× the combined NRV of the UK's leading prenatal. Research-backed doses, not deficiency floors.
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Manufactured to Good Manufacturing Practice standards in audited UK facilities.
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Formulated and manufactured in the United Kingdom.
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Every batch independently tested for purity, identity, and dose accuracy.
Backed by 500+ peer-reviewed studies and research papers.
Our formulations are informed by the cumulative body of peer-reviewed research on the individual nutrients we use. Every choice active 5-MTHF folate, two B12 forms, the 300mg CoQ10 dose traces back to published science.
We don't run our own clinical trials. We build around the trials that already exist.
Your questions answered
Fertility nutrition can feel overwhelming with endless information, conflicting advice, and supplements that overpromise. Whether you're at the start of your TTC journey or you've been trying for over a year, here's what you actually need to know. No noise, no overpromising, just honest answers from the people building BioMirco.
Fertility & TTC Basics
Whether you're just starting or you've been trying for over a year, the core questions are the same when to start, what to take, and when to switch. Here's what fertility nutritionists actually recommend.
When should I start taking a fertility supplement?
When should I start taking a fertility supplement?
Ideally at least 90 days before you actively try to conceive. The egg you ovulate this month started developing roughly 90 days ago, preconception nutrition is most impactful during that window. If you're already trying, start now. Every cycle benefits.
What's the difference between Fertility Advance and Fertility Focus?
What's the difference between Fertility Advance and Fertility Focus?
Advance is our high-strength formula for women 35+ or trying for 12+ months with 300mg CoQ10, 800µg folate, 3 capsules a day. Fertility Focus is for early TTC and continues through the first trimester 200mg CoQ10, 533µg folate, 2 capsules a day. Both use the same active forms.
How long until I see results?
How long until I see results?
Honest answer: there's no quick result with fertility nutrition. The 90-day egg cycle means the eggs you're nutritionally supporting today will mature roughly three months from now. Consistency over months matters more than any single day.
Should my partner take something too?
Should my partner take something too?
Yes, around 40% of fertility challenges involve a male factor, and the 90-day sperm cycle matters too. We're launching Fertility Advance for Men in 2026.
Ingredients & Safety
We make only health claims authorised on the GB Nutrition & Health Claims Register. Every ingredient is in its most bioavailable form. Vegan, third-party tested, made in the UK at our GMP-certified facility.
Do you use synthetic folic acid?
Do you use synthetic folic acid?
No. We use 5-MTHF folate (calcium 5-methyltetrahydrofolate) the active form your body uses directly. Up to 40% of women carry an MTHFR gene variant that limits their ability to convert synthetic folic acid. 5-MTHF works for all women regardless of MTHFR status.
Are BioMirco supplements safe during pregnancy?
Are BioMirco supplements safe during pregnancy?
Fertility Focus is designed to continue through the first trimester. Fertility Advance is preconception only, once pregnant, transition to Fertility Focus, then to a dedicated prenatal at around 12 weeks. Always speak to your midwife.
Are BioMirco supplements vegan?
Are BioMirco supplements vegan?
Yes, our fertility supplements are 100% vegan. Capsule shells are plant-based HPMC (hydroxypropyl methylcellulose). Vitamin D3 is sourced from lichen, not lanolin. No animal testing at any stage.
Can I take BioMirco alongside medication?
Can I take BioMirco alongside medication?
Speak to your GP or pharmacist about any specific medication interactions. The most common ones to flag: zinc can interact with thyroid medication (separate by 2 hours), and iron competes with calcium for absorption (separate by 2 hours). Otherwise BioMirco is broadly compatible with most medications.