Blood Builder.

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 people20 human studies on Vitamin C back this formula, each one cited.
• A mechanism that is settledHow Vitamin C and Folate work is settled pharmacology.
• Studied together, not just separatelyVitamin C and Vitamin B12 have been studied together, not only separately.
• Recent work on the recordThe most recent study on this record was published in 2025.
• Serving amount inside the studied rangeEach serving carries 680 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 tablet, so the amount per serving is fixed and it stores well.
• An absorption partner in the same servingIron is in the same serving as Vitamin C, where it has a measured absorption role.
• Full label disclosureEvery ingredient on this label carries its own declared amount.
• Where it comes from and how it is madeVitamin C is made by fermentation.
• 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.

• Iron + Vitamin CAbsorption

  In a controlled radioiron study in 63 men, adding ascorbic acid to a non-heme iron meal increased iron absorption in proportion to the dose, from about 1.6 times the meal alone at 25 mg to about 9 times at 1000 mg.

  Cook & Monsen, 1977 (Am J Clin Nutr)PMID 835510

  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.

• Vitamin Cwithin 24 hours of a single doseMeasured within a day

  In a randomised crossover trial, 12 healthy adults consumed 101.7 mg of vitamin C as a powder, as raw fruits and vegetables, or as juice, and plasma vitamin C rose after every intake form, with plasma and urinary levels tracked over the 24 hours following the single dose.

  Choi et al., 2025 (Nutrients)PMID 41228404

  Strong
• 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
• Vitamin B12about 16 weeks of daily oral useBuilds with daily use

  A randomised, double-blind, parallel-group dose-finding trial in 120 older people with mild vitamin B12 deficiency, defined as serum B12 of 100 to 300 pmol/L with methylmalonic acid at or above 0.26 umol/L, gave daily oral cyanocobalamin at 2.5, 100, 250, 500 or 1000 ug for 16 weeks. Mean plasma methylmalonic acid fell 16%, 16%, 23%, 33% and 33% across those doses. Daily doses of 647 to 1032 ug accounted for 80% to 90% of the estimated maximum reduction. The window was measured on a blood marker of B12 status, not on a symptom.

  Eussen et al., 2005 (Arch Intern Med)PMID 15911731

  Promising
• Vitamin B12serum levels peak about seven hours after a single tabletMeasured within a day

  An open-label randomised single-dose pharmacokinetic study in 20 healthy men aged 20 to 45, conducted and authored by staff of Emisphere Technologies, the developer of the SNAC carrier under test, measured serum vitamin B12 after one 5 mg cyanocobalamin tablet, with six men on the marketed tablet. Time to peak serum B12 was 6.83 hours for the marketed tablet and 0.5 hours for the carrier coformulation. Absolute bioavailability was 2.16% and 5.09% respectively. One trial, six men per arm. Serum concentration was measured, not any symptom.

  Castelli et al., 2011 (Clin Ther)PMID 21722960

  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

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.

Five ingredients, from each one's own page.

• Vitamin CWithin hours

  Blood levels rise within hours and tissue pools fill over days. Collagen-linked changes in skin and gums build over weeks and show as tissue quality, not as a sensation.

  Its own page, the plain answer on timing ↗

• 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 ↗

• Vitamin B12

  Markers move first. Methylmalonic acid and homocysteine start shifting within a week or two, while anything you would notice takes several weeks of daily use.

  Its own page, the plain answer on timing ↗

• IronTwo to four weeks

  Before everyday stamina shifts. Ferritin, the storage marker, climbs over months of steady daily intake rather than days.

  Its own page, the plain answer on timing ↗

• Beet RootAbout two to three hours

  The circulation and exercise effect lands about two to three hours after a dose. Readings on a blood pressure cuff shift over one to two weeks of daily use.

  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.

Tablet

It is a tablet, so the amount per serving is fixed and it stores well.

Studied alongside this brand's other formulas

Where two of this brand's products carry actives the literature has read together, the pairing and its basis are below. The evidence word is the corpus row's own confidence, never a score.

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