Peptide profile
Lactoferrin
Iron-binding protein for immunity and gut barrier
Compare Lactoferrin with other peptides →Summary
An iron-grabbing protein that helps your immune system and tummy.
- Typical dose
- 250-1000mg oral / 50-100mg injectable Daily
- Route
- Subcutaneous, Oral
- Cycle length
- Ongoing
- Evidence
- Limited human data
Mechanism
How it works
Lactoferrin acts like a hungry vacuum cleaner for iron — it removes the metal that bacteria need to grow while also calling in immune reinforcements.
Lactoferrin binds free iron (starving pathogens), disrupts bacterial membranes, and modulates cytokine production via TLR4 and CD14.
Reported in research
Benefits
- Fights off many kinds of germs
- Helps your immune system work better
- Makes your gut wall stronger
- Helps your body soak up iron
Context, not a prescription
Dosing
- Typical range
- 250-1000mg oral / 50-100mg injectable Daily (Subcutaneous, Oral)
- Cycle length
- Ongoing
Safety
Side effects & contraindications
Possible side effects
- Mild GI discomfort (oral)
- Greenish stool (harmless)
- Allergic reaction (rare)
- Constipation
- Nausea
Contraindications
- Iron overload disorders (hemochromatosis)
- Known milk protein allergy (lactoferrin from bovine milk)
Research information, not medical advice. Always consult a licensed clinician before considering any peptide.
In depth
Full profile
What it does
You get sick less, your gut feels better, and your iron gets better.
How it works
Lactoferrin is like a hungry vacuum cleaner for iron. It sucks up the metal germs need to grow. It also calls in your body's helpers to fight.
It sticks to special spots on your immune cells. It also stops bad bacteria from grabbing onto your gut wall.
What to expect
Immune help comes in days. Gut help comes over weeks.
- Days 3-7: First boost for your immune system.
- Weeks 2-4: Your gut wall gets stronger.
- Weeks 4-6: You may get sick less often.
Good to know
- Start with a smaller dose by mouth (250mg)
- Take it on an empty stomach so your body uses it best
- Pick a non-cow source if you have allergies
Staying safe
- A little tummy ache (by mouth)
- Greenish poop (totally safe)
Avoid if you have:
- People with too much iron in their body (a condition called hemochromatosis)
- People allergic to milk protein (the cow kind comes from cow's milk)
Mechanism of action
Lactoferrin binds free iron (starving pathogens), disrupts bacterial membranes, and modulates cytokine production via TLR4 and CD14.
Binds to receptors on immune cells (LRP, TLR4) and inhibits bacterial adhesion to gut epithelium.
Pharmacodynamics
Immune effects within days; gut benefits over weeks.
Reduced infection risk, improved gut health, better iron status.
Timeline
- Days 3-7: Initial immune support.
- Weeks 2-4: Improved gut barrier function.
- Weeks 4-6: Reduced infection frequency.
Comparisons
- Lactoferrin — effectiveness Moderate, safety Excellent, cost $, Easy to use
- Colostrum — effectiveness Moderate, safety Excellent, cost $, Easy to use
Adverse effects
Common:
- Mild GI discomfort (oral)
- Greenish stool (harmless)
Rare:
- Allergic reaction (rare)
- Constipation
- Nausea
Contraindications & risk mitigation
Contraindicated in:
- Iron overload disorders (hemochromatosis)
- Known milk protein allergy (lactoferrin from bovine milk)
- Start with lower oral dose (250mg)
- Take on empty stomach for best absorption
- Choose non-bovine source if allergic
Qué hace
Te enfermas menos, tu intestino se siente mejor y tu nivel de hierro mejora.
Cómo funciona
La lactoferrina es como una aspiradora hambrienta de hierro. Absorbe el metal que los gérmenes necesitan para crecer. También llama a los ayudantes de tu cuerpo para combatir.
Se adhiere a puntos especiales en tus células inmunitarias. También evita que las bacterias dañinas se agarren a la pared de tu intestino.
Qué esperar
La ayuda inmunológica llega en días. La ayuda intestinal llega en semanas.
- Días 3-7: Primer impulso para tu sistema inmunológico.
- Semanas 2-4: La pared de tu intestino se fortalece.
- Semanas 4-6: Es posible que te enfermes con menos frecuencia.
Bueno saber
- Comenzar con una dosis más pequeña por vía oral (250 mg)
- Tomarlo con el estómago vacío para que tu cuerpo lo aproveche al máximo
- Elegir una fuente no bovina si tienes alergias
Manteniéndose seguro
- Un leve dolor de estómago (por vía oral)
- Heces verdosas (totalmente seguras)
Evitar si tienes:
- Personas con exceso de hierro en el cuerpo (una condición llamada hemocromatosis)
- Personas alérgicas a la proteína de la leche (la de vaca proviene de la leche de vaca)
Mecanismo de acción
La lactoferrina se une al hierro libre (inmuniendo a los patógenos), altera las membranas bacterianas y modula la producción de citoquinas a través de TLR4 y CD14.
Se une a receptores en células inmunitarias (LRP, TLR4) e inhibe la adhesión bacteriana al epitelio intestinal.
Farmacodinamia
Efectos inmunológicos en días; beneficios intestinales en semanas.
Menor riesgo de infección, mejor salud intestinal, mejor estado del hierro.
Cronología
- Días 3-7: Soporte inmunológico inicial.
- Semanas 2-4: Mejora de la función de barrera intestinal.
- Semanas 4-6: Reducción de la frecuencia de infecciones.
Comparaciones
- Lactoferrina — efectividad Moderada, seguridad Excelente, costo $, Fácil de usar
- Calostro — efectividad Moderada, seguridad Excelente, costo $, Fácil de usar
Efectos adversos
Comunes:
- Molestias gastrointestinales leves (oral)
- Heces verdosas (inofensivas)
Raros:
- Reacción alérgica (rara)
- Estreñimiento
- Náuseas
Contraindicaciones y mitigación de riesgos
Contraindicado en:
- Trastornos por sobrecarga de hierro (hemocromatosis)
- Alergia conocida a la proteína de la leche (lactoferrina de leche bovina)
- Comenzar con dosis oral menor (250 mg)
- Tomar con el estómago vacío para una mejor absorción
- Elegir fuente no bovina si es alérgico
Reference data
Specifications
- Route
- Subcutaneous, Oral
- Cycle length
- Ongoing
FAQ
Common questions
Can lactoferrin help with COVID?
Some research suggests possible antiviral activity, but not a proven treatment.
Is bovine or human lactoferrin better?
Bovine is widely available and effective; human lactoferrin is more expensive with similar benefits.
What is the evidence level?
This compound is classified as Limited human data. Some human data exists but trials are small, short-term, or not yet replicated.
Research
Research & sources
Current evidence for Lactoferrin is rated as Limited human data. Limited human data is available.
- 1. Lactoferrin immune modulation (2011) — DOI:10.1016/j.bcp.2011.05.010
- 2. Lactoferrin gut health (2014) — DOI:10.3748/wjg.v20.i23.7478
- 3. Lactoferrin immune modulation (2011)
- 4. Lactoferrin gut health (2014)