Prenatal Multi.

The gap this formula speaks to.

Public health figures the engine matched to this formula's ingredients. Reported by their source, cited and dated, never written by the brand.

Population figures from public health data. Context for the category, not a statement about any individual and not a claim about this product.

Every one of these is a fact the engine could ground.

Each line below was derived from this formula's own record at the time of verification. Nothing here was written by the brand, and nothing can be added that the evidence does not carry.

• Studied in people22 human studies on Zinc back this formula, each one cited.
• A mechanism that is settledHow Folate and Iron work is settled pharmacology.
• Studied together, not just separatelyFolate and Choline have been studied together, not only separately.
• Recent work on the recordThe most recent study on this record was published in 2024.
• Serving amount inside the studied rangeEach serving carries 800 mcg of Folate, inside the range the published research used.
• A stated daily maintenance amountFolate is here at a daily maintenance amount, which is what a daily supplement is for.
• Why this formatIt is a capsule, so the amount per serving is fixed and travels without measuring.
• The exact form, describedThe label names its forms exactly: Folinic acid, Iron bisglycinate (Ferrochel), Choline bitartrate. The record says what each one is and what it suits.
• Full label disclosureEvery ingredient on this label carries its own declared amount.
• Where it comes from and how it is madeFolate is made by more than one route.
• Positions this formula already qualifies forThis formula already qualifies for positions beyond the one it is sold into, on the evidence it carries.
• A position nobody is holding yetSome of those positions are ones almost nobody is selling to yet.
• Interaction screen on the recordEvery active on this label was screened against the interaction record, and the screen is published with it.

The combinations the trials actually measured.

One pairing in this formula has been studied as a combination in human trials. Each finding below is what a named study measured, cited and dated, never written by the brand.

• Vitamin D3 + Vitamin K2Bone

  In a meta-analysis of eight randomized trials, vitamin K2 taken together with vitamin D raised total bone mineral density and lowered undercarboxylated osteocalcin, a marker of vitamin K status.

  Kuang et al., 2020 (Food & Function)PMID 32219282

  Promising

Findings from trials that studied these actives as a combination. Context for how the actives were tested together, not a statement about any individual and not a claim about this product.

What the trials show about timing.

Time-to-effect windows the engine read from the trial record. Each is a window a named study measured, cited and dated, never written by the brand.

• Folatea median of about 36 weeks of daily intakeBuilds with daily use

  A systematic review and Bayesian meta-analysis drew on 108 articles from 14,002 screened records and modelled blood folate against folic acid intake using one-compartment pharmacokinetic models. Red blood cell folate rose 1.78 fold from baseline to steady state at 375 to 570 ug folic acid per day, and reaching that steady state took a median of 36 weeks, 95% credible interval 27 to 52 weeks. Serum or plasma folate rose 11.6% for every 100 ug per day of folic acid intake, 95% credible interval 8.4 to 14.9.

  Crider et al., 2019 (Nutrients)PMID 30609688

  Strong
• Folateabout 18 days for serum folate to reach its maximumBuilds with daily use

  A kinetic study in six healthy men aged 22 to 31 gave 3.6 umol per day, 1.6 mg, of deuterium-labelled folic acid for four weeks, with folate tracked in serum, erythrocytes and urine by microbiological assay and gas chromatography mass spectrometry. Serum folate reached its maximum concentration in about 18 days, while isotopic labelling of erythrocyte folate kept rising across the whole four weeks. After supplementation stopped, red blood cell folate and urinary folate excretion declined linearly, and serum folate fell with a slow-phase half-life of 18.7 days. One study, six men, no control group.

  von der Porten et al., 1992 (J Nutr)PMID 1588447

  Early
• Ironwithin 24 hours of a single doseMeasured within a day

  A randomised crossover study in 54 nonanemic young women with plasma ferritin at or below 20 ug/L gave labelled iron sulfate as single fasting morning doses of 40, 60, 80, 160 and 240 mg. Twenty four hours after doses of 60 mg or more, serum hepcidin was raised and fractional iron absorption from the following dose was 35% to 45% lower. Across the dose range a sixfold rise in dose, 40 to 240 mg, produced a threefold rise in iron absorbed, 6.7 to 18.1 mg. Total iron absorbed from three doses inside 24 hours was not significantly greater than from two morning doses. The measure was iron absorption and serum hepcidin, not a symptom.

  Moretti et al., 2015 (Blood)PMID 26289639

  Promising
• Cholineabout 10 to 12 weeks of daily intakeBuilds with daily use

  In a controlled feeding study, lactating women randomised to 480 or 930 mg choline per day for 10 to 12 weeks showed that the higher intake increased breast milk choline content by raising output of endogenously synthesised choline metabolites.

  Davenport et al., 2015 (The Journal of nutritional biochemistry)PMID 26025328

  Promising
• Vitamin D3about 3 months of daily useBuilds with daily use

  In the trial record, blood vitamin D rises for about 3 months of daily vitamin D3 and then holds at a plateau, near 69 nmol/L at 1,000 IU a day, from a starting level near 41 nmol/L.

  Vieth et al., 2001 (Am J Clin Nutr)PMID 11157326

  Early
• Vitamin K2about four weeks of daily useBuilds with daily use

  A double-blind randomised dose-finding trial gave 60 postmenopausal women aged 50 to 69 either 0, 50, 100 or 200 micrograms of menaquinone-7 daily for four weeks on a controlled diet. The ratio of carboxylated to undercarboxylated osteocalcin rose dose dependently, with significant differences from the 0 microgram group at 100 and 200 micrograms. A companion 12-week trial in 120 people aged 20 to 69 confirmed the change at 100 micrograms daily. Both studies were run by authors affiliated with the R and D division of J-Oil Mills. An independent 8-week double-blind trial in 55 healthy prepubertal children found the same direction at 45 micrograms daily. What was measured is a blood marker of vitamin K status, not bone density and not a sensation.

  Inaba et al., 2015 (J Nutr Sci Vitaminol (Tokyo))PMID 26875489

  van Summeren et al., 2009 (Br J Nutr)PMID 19450370

  Promising

Windows measured in the cited trials. Context for how the active behaves over time, not a statement about any individual and not a claim about this product.

How each ingredient usually behaves over time.

10 ingredients, from each one's own page.

• FolateAbout four to eight weeks

  Red cell folate climbs over roughly four to eight weeks. It's a blood panel change rather than a sensation.

  Its own page, the plain answer on timing ↗

• IronTwo to four weeks

  Before haemoglobin and ferritin start shifting on a blood panel, and everyday stamina tends to follow the markers rather than lead them.

  Its own page, the plain answer on timing ↗

• Choline

  Nothing sharp. Membrane and neurotransmitter pools refill over weeks, and choline status shows up in a blood reading well before it shows up in how you think.

  Its own page, the plain answer on timing ↗

• Vitamin D3About six to twelve weeks

  Blood 25-hydroxyvitamin D climbs over six to twelve weeks on a steady daily dose. It is a panel change first, and anything subjective trails behind it.

  Its own page, the plain answer on timing ↗

• Vitamin K2Within days

  Blood levels move within days. Carboxylation of the vitamin K dependent proteins shifts over roughly four to twelve weeks, and that shows on a lab panel rather than in how you feel.

  Its own page, the plain answer on timing ↗

• IodineWeeks, not days

  Absorption takes hours, but the hormone pool it feeds turns over slowly, so the change reads on a urinary iodine measure and a thyroid panel first.

  Its own page, the plain answer on timing ↗

How each ingredient usually behaves over time, from its own page on IngredientMD. General timing for the ingredient, not a measurement of this product.

The same ingredient, carried differently.

What each form is, and where it fits in a formula. Measured findings carry the study that reported them.

• Ferrous bisglycinate

  Iron chelated to two molecules of the amino acid glycine, rather than carried as a simple salt.

  Fits

  Trade-off

  at 18 mg it did not match 60 mg of ferrous sulfate for ferritin in a non-inferiority trial, and the meta-analysis found no significant difference in haemoglobin or ferritin among children

• Potassium iodide

  The potassium salt of hydroiodic acid, a white crystalline solid that is roughly three-quarters iodide by weight and dissolves readily in water.

  Fits

  A stable, water-soluble way to supply iodide at the small microgram amounts a daily supplement calls for, which is why it is the iodine source in most multivitamins and standalone drops.

  Trade-off

  Potassium iodide is sensitive to moisture, light and air and can slowly oxidise to free iodine that yellows a tablet or liquid, so it usually needs a stabiliser and protective packaging.

• Zinc bisglycinate

  Zinc chelated to two glycine molecules through a nitrogen and an oxygen bond, the smallest amino acid available for chelation, giving a low molecular weight chelate of about 26 percent zinc by weight. It is a neutral-tasting dry powder with mild solubility and is stable across the pH range a capsule or tablet passes through.

  Fits

  Daily capsules, tablets and blends where a chelated organic form and a neutral taste are wanted, including formulas that pair zinc with other minerals in the same dose form. The small chelate size keeps the raw weight manageable at everyday zinc targets.

  Trade-off

  The supporting human study is a pilot intervention with ten young women per arm at 60 mg zinc daily, above the 40 mg tolerable upper intake level for adults, so the reassuring copper-status reading was taken at a dose most consumer formulas do not use, over only six weeks. No stable-isotope absorption study in humans has measured this form.

  In a six-week placebo-controlled pilot intervention in young adult women (10 per arm, 30 in total) at 60 mg zinc daily, a dose above the 40 mg tolerable upper intake level for adults, plasma zinc, described by the authors as the traditional assessment of zinc status, increased in all subjects given zinc glycinate, while no significant change was seen overall for zinc gluconate or placebo. Erythrocyte superoxide dismutase activity, used in that study as a marker of zinc-induced copper deficiency, was unchanged in all three groups over the six weeks. A 2024 narrative review of the chemical forms of zinc, written by authors employed by a supplement manufacturer, states that little information is available comparing the absorption and bioavailability of the different chemical forms. No stable-isotope absorption study in humans has measured this form.

  DiSilvestro 2015, Biol Trace Elem Res (pilot intervention, placebo-controlled)PMID 25877802
• Methylcobalamin

  Cobalamin carrying a methyl group on the cobalt centre, the same species used directly by methionine synthase.

  Fits

  Oral tablets, capsules and powders where a preformed methylated cofactor is wanted.

  Trade-off

• Magnesium bisglycinate

  Magnesium chelated to two molecules of the amino acid glycine, rather than carried as a mineral salt.

  Fits

  evening and sleep-positioned formulas, and pregnancy formulas aimed at leg cramps, which is where its trials sit

  Trade-off

Descriptions of the form itself, read from the cited studies. Not a comparison between products and not a statement about any individual.

Capsule

It is a capsule, so the amount per serving is fixed and travels without measuring.

Because the effect builds and holds only with continued daily use, a steady recurring supply is the practical way to keep it going.