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What it is
A single-serve daily stick pack pairing 1 gram of bovine colostrum standardized to 10% IgG (immunoglobulin G, the antibody-like immune proteins in the first milk a mammal produces) with an LC-Plasma postbiotic (heat-treated Lactococcus lactis strain Plasma), plus vitamins C and D3 and fiber. It is built to support both the gut lining and everyday immune-cell communication. Contains milk.
Why the evidence supports it
This pairs two ingredients that each carry their own human research rather than leaning on colostrum alone: the LC-Plasma postbiotic is studied for activating the 'leader' immune cells (plasmacytoid dendritic cells) that help coordinate a broader immune response, and bovine colostrum has trial work on gut-barrier integrity, including reduced intestinal permeability markers in athletes. Vitamins C and D3 round it out as recognized cofactors for normal immune-cell function. Together that makes it an evidence-based way to support the cell's Exchange function — the gut lining's normal antigen-handling and the chatter between immune cells that keeps that barrier coordinated — and it is support only, not a treatment or preventive for infection or gut disease. Exact postbiotic count and vitamin amounts still need visual label confirmation.
What it supports
- Supports healthy gut-barrier integrity
- Supports the immune system's normal, everyday cell-to-cell communication
- Provides IgG-rich bovine colostrum and an LC-Plasma postbiotic
- Provides vitamin C and D3 alongside gut-supportive fiber
Which function it supports
Ties to the cell's Exchange function — colostrum's IgG and the LC-Plasma postbiotic support the gut lining's normal antigen-handling and the everyday chatter between immune cells that keeps that barrier coordinated. This is gut-barrier and communication support only, not a treatment for infection or gut disease.
Learn the why behind this pillarHow it relates to your cells and mind
Every product here ties back to a specific job your body does. This one touches the functions below — follow either link to see the mechanism in full, then dig into the studies.
What it is made of — and the mechanisms behind it
Each ingredient acts on several of the body's functions. Taken together, this product touches these cell and mind functions — follow any to see the mechanism in full.
The ingredients
Mechanisms drawn from our ingredient knowledge base (5 profiled ingredients). Structure and function only — not a treatment claim.
The science on the ingredients
Carotenoid profile in maternal and cord plasma and its trends in breast milk during lactation: a comparative study among three cities in northern ChinaEmergingCross-sectional survey2025
In northern-Chinese mothers, carotenoids transferred into breast milk shifted over lactation -- beta-carotene predominated in colostrum and lutein in mature milk -- and milk levels partly tracked mothers' dietary carotenoid intake.
Tian L, Wang L, Li F, Sun A, Ni M, Sun H, Wang H, Li X, Zhao Y, Zhang L, Li X, Kuchan M, Mao Y, Chen J. — Food & function
Bioactive Peptides from Bovine Colostrum: Sources, Structures, and Biomedical Applications.2026
A review describes how bioactive peptides derived from bovine colostrum proteins, including caseins, immunoglobulins, and lactoferrin, show antimicrobial, antitumor, anti-inflammatory, and antioxidant properties supporting mucosal immunity and gut integrity.
Alkan Y; Yalçıntaş YM; Karav S — Probiotics and antimicrobial proteins
Nutritional and health effects of bovine colostrum in neonates.2024
Review describes bovine colostrum immunoglobulins, bioactive peptides, and growth factors as supporting neonatal gut health and immune function, with supplementation studies showing reduced rates of rotavirus diarrhea, necrotizing enterocolitis, and sepsis in prematurity models.
Luo F; Zhang M; Zhang L; Zhou P — Nutrition reviews
Bovine Colostrum in Pediatric Nutrition and Health.2024
A review found that bovine colostrum, rich in immunoglobulins, lactoferrin, and glycans, supports gut and immune health in infants and children, with reported associations to conditions including necrotizing enterocolitis and inflammatory bowel disease.
Canbolat AA; Lombardo M; Mondragon ADC; López JMM; Bechelany M; Karav S — Nutrients
A review of bovine colostrum preservation techniques.2022
A review of bovine colostrum preservation explains that first-milking colostrum is rich in immunoglobulins essential for passive immunity in newborn calves, typically preserved by refrigeration, freezing, or chemical preservatives, though colostrum from infected cows should be discarded.
Denholm K — The Journal of dairy research
Bovine Colostrum: Its Constituents and Uses.2021
A review found that bovine colostrum contains immunoglobulins, antimicrobial peptides, and growth factors that support immune defense and gut barrier function, with studies reporting various therapeutic effects.
Playford RJ; Weiser MJ — Nutrients
Potential Benefits of Bovine Colostrum in Pediatric Nutrition and Health.2021
This review of bovine colostrum in infants and children summarizes its high immunoglobulin and protein content and its studied use for supporting gut and immune function in conditions like diarrhea, infection, and short-bowel syndrome.
Sangild PT; Vonderohe C; Melendez Hebib V; Burrin DG — Nutrients
The Use of Bovine Colostrum in Sport and Exercise.2021
Narrative review of bovine colostrum in sports nutrition finds some evidence of protection against performance decrements and gut permeability issues, though dose-response data remain limited across variable commercial products.
Davison G — Nutrients
Lactococcus lactis strain Plasma activates plasmacytoid dendritic cells and mitigates common cold-like symptoms in healthy adults: a meta-analysis of individual participant dataEmergingMeta-analysis2025
LC-Plasma maintained pDC CD86 and HLA-DR activation markers and reduced cough by 0.69 days and feverishness by 0.26 days per 28 days versus placebo
Kato Y et al. — Frontiers in Immunology
Oral vitamin C supplementation decreased low-density lipoprotein in adults on hemodialysis: A systematic review and meta-analysis.EmergingMeta-analysis2025
A systematic review found oral vitamin C supplementation decreased LDL cholesterol levels in adults undergoing hemodialysis, with further clarification of dosing needed.
de Oliveira IM; Hauschild DB; Machado RP; Marques BS; Wazlawik E — Nutrition research (New York, N.Y.)
Vitamin C reduces the severity of common colds: a meta-analysisMeta-analysis2023
A meta-analysis of 10 placebo-controlled trials found vitamin C reduced the duration of more severe cold symptoms, though it showed less effect on mild symptoms.
Hemila H — PubMed Central (PMC)
Enhanced Vitamin C Delivery: A Systematic Literature Review Assessing the Efficacy and Safety of Alternative Supplement Forms in Healthy Adults.EmergingSystematic review2025
A systematic review on Vitamin C found that studies highlight the advantages of Calcium ascorbate EC over traditional ascorbic acid in terms of its tolerability and its potential to increase leukocyte vitamin C concentrations.
Calder PC; Kreider RB; McKay DL — Nutrients
Treatment efficacy of vitamin C or ascorbate given as co-intervention with iron for anemia - A systematic review and meta-analysis of experimental studies.EmergingMeta-analysis2023
A meta-analysis found no significant difference in hemoglobin or serum ferritin when vitamin C was combined with iron compared with iron alone.
Loganathan V; Bharathi A; Prince AM; Ramakrishnan J — Clinical nutrition ESPEN
The Effects of Dietary Supplementation with Collagen and Vitamin C and Their Combination with Hyaluronic Acid on Skin Density, Texture and Other Parameters: A Randomised, Double-Blind, Placebo-Controlled TrialEstablishedRandomized controlled trial2024
In a 16-week double-blind, placebo-controlled trial, 5 g hydrolyzed collagen with 80 mg vitamin C daily significantly improved dermis density and skin texture and reduced wrinkle severity, while showing no significant effect on elasticity or hydration.
Katja Žmitek; Janko Žmitek; Hristo Hristov; Mirjam Rogl Butina; Petra Keršmanc; Tina Pogačnik — Nutrients
Do Liposomal Vitamin C Formulations Have Improved Bioavailability? A Scoping Review Identifying Future Research Directions.EmergingClinical trial2025
An expert review on Vitamin C found that ten studies were identified, which administered different liposomal formulations, vitamin C doses (0.15-10 g) and sample collection durations (4-24 h).
Carr AC — Basic & clinical pharmacology & toxicology
Comparative Effectiveness of Ascorbic Acid vs. Calcium Ascorbate Ingestion on Pharmacokinetic Profiles and Immune Biomarkers in Healthy Adults: A Preliminary Study.ContestedRandomized controlled trial2024
A randomized controlled trial on Vitamin C found that there were no significant differences in the primary or secondary outcomes between the two treatments in the 250 mg low-dose study.
Dickerson B; Gonzalez DE; Sowinski R; Xing D; Leonard M; Kendra J; Jenkins V; Gopalakrishnan S; Yoo C; Ko J; Pillai SS; Bhamore JR; Patil BS; Wright GA; Rasmussen CJ; Kreider RB — Nutrients
Role of sodium-dependent vitamin C transporter 2 in human periodontal ligament fibroblasts.EmergingClinical trial2025
A clinical trial on Vitamin C found that our study reveals the SVCT2 expression in PDL and the pivotal role of SVCT2 in mediating AA-induced enhancements of ALP activity and collagen production in PDLF.
Kanda T; Iwasaki K; Taguchi Y; Umeda M — Journal of periodontal research
Effects of Acute Vitamin C plus Vitamin E Supplementation on Exercise-Induced Muscle Damage in Runners: A Double-Blind Randomized Controlled Trial.ContestedRandomized controlled trial2022
A randomized controlled trial found that vitamin C and E supplementation does not seem to help with EIMD in endurance-trained individuals.
Martínez-Ferrán M; Cuadrado-Peñafiel V; Sánchez-Andreo JM; Villar-Lucas M; Castellanos-Montealegre M; Rubio-Martín A; Romero-Morales C; Casla-Barrio S; Pareja-Galeano H — Nutrients
Ascorbate mitigates oxidative stress and hemin cytotoxicity in heme oxygenase-1 deficiency.EmergingClinical trial2025
A clinical trial on Vitamin C found that treatment with 2-phospho-L-ascorbic acid (AA2P) restored cell viability in both models upon hemin-induced stress, with protection requiring functional SVCT2-mediated uptake.
Berendes LS; Schulze Westhoff P; Tobinski AM; Narvaez Pardo JA; Wingert V; Fobker M; Biskup S; Seelhöfer A; Van Marck V; Heitplatz B; Drell PT; Wittkowski H; Das AM; Hannibal L; Nowak WN; Józkowicz A; Klotz L; Varga G; Marquardt T; Park J — The Journal of biological chemistry
Comparative Bioavailability of Vitamin C After Short-Term Consumption of Raw Fruits and Vegetables and Their Juices: A Randomized Crossover Study.EmergingRandomized controlled trial2025
A randomized controlled trial on Vitamin C found that antioxidant activity showed transient ORAC elevation post-powder but no sustained improvements.
Choi M; Baek J; Yun JM; Hong YS; Park E — Nutrients
Vitamin C-Based Gingival Depigmentation Versus Surgical Depigmentation: A Randomized Clinical Trial.EmergingRandomized controlled trial2024
A randomized controlled trial on Vitamin C found that both the techniques were successful in treating gingival hyperpigmentation, but the patients who underwent vitamin C-based depigmentation showed significantly higher satisfaction with the treatment result.
Haque AU; Lal N; Kaushal S; Rastogi P; Singhal R — TheScientificWorldJournal
Comparative efficacy of platelet-rich plasma (PRP) injection versus PRP combined with vitamin C injection for partial-thickness rotator cuff tears: a randomized controlled trial.EmergingRandomized controlled trial2024
A randomized controlled trial on Vitamin C found that while PRP alone showed significant benefits, further research is required to ascertain if the combination therapy offers statistically significant advantages over PRP alone.
Mohammadivahedi F; Sadeghifar A; Farsinejad A; Jambarsang S; Mirhosseini H — Journal of orthopaedic surgery and research
Vitamin C mesotherapy versus diode laser for the esthetic management of physiologic gingival hyperpigmentation: a randomized clinical trial.EmergingRandomized controlled trial2023
A randomized controlled trial found that vitamin C mesotherapy and diode laser are both effective in the management of physiologic gingival hyperpigmentation.
Esmat SA; El-Sayed NM; Fahmy RA — BMC oral health
Transport of dehydroascorbic acid by glucose transporters GLUTs.EmergingExpert review2025
Dehydroascorbic acid transporters mediate physiological distribution of vitamin C throughout the body, with ongoing research into their broader cellular transport roles.
Mardones L — Vitamins and hormones
Balanced by design — we show supporting and contradicting findings. Search all studies
No product works in isolation
Every cell function above — Sense, Exchange, Transform, Build, Maintain, Adapt — needs the same broad base of optimal micronutrient levels running underneath it, all the time. Colostrum Defense is not a stand-alone fix; it is one piece that plugs into that larger system. The foundation comes first, and this supports it.
Stacks well with
Pick your goal — here is what Colostrum Defense pairs with for each. Nothing works in isolation; these share the same systems.
For Gut Health
For Immune
Foundational, or targeted?
Not everything in the shop is meant to be taken forever. Some products here are foundational — a daily nutrient base built for long-term, ongoing use. Others are targeted -- shorter-term support for a specific season, not a lifelong habit. If you are not sure which one this is, that is a fair question to ask us before you buy.
Learn more, on your terms
Do not take our word for it — go read. Each topic below opens a pre-loaded search so you can explore the nutrient, the mechanism, or the device for yourself.
Search the full studies libraryHow to use it
Mix one stick into 6 to 8 ounces of water or another beverage once daily. If you have a milk allergy, this product is not for you since it contains dairy-derived colostrum.
Where to get it
Ready when you are. This link takes you to the official, verified source for this product.
Get Colostrum DefenseThe studies
See the research behind the science we point to.
Explore studiesThe blog
Plain-language reads on how it all fits together.
Read the blogOptimal nutrients are the definition of longevity
Long-term cell function depends on having what it needs, at the level it needs it, for as long as it needs it. That is the whole thesis behind everything we point you to here.
When you buy through our links, we earn a small commission — and that is what funds all the free education here. It never costs you more. Products are not intended to diagnose, treat, cure, or prevent any disease.