If you’ve known Leapfrog for a while, you’ll know we’re champions of lactoferrin (and the UK's first lactoferrin brand). It’s the star of our formulas for good reason: Mother Nature's multi-tasking protein - found in the milk of most mammals, our tears, saliva, sweat and even within white blood cells - is called the "miracle molecule" by scientists. But what does lactoferrin do for you? It's also known as "the Swiss Army Knife of the human defence system" because of its extraordinary array of benefits to the body. Listed below are some of Leapfrog's favourites.

 

Immune Support: Lock Up the Iron, Lock Out the Invaders

Bacteria are iron-hungry and without it, they struggle to survive. How does Lactoferrin kill bacteria? Lactoferrin steps in and binds to iron tightly, depriving pathogens of the nutrients they need to grow. This antibacterial effect helps keep infections at bay before they can take hold. 

For viruses, lactoferrin is also thought to interfere with their ability to attach to cells and replicate. By blocking viral entry, it gives your immune system a head start and reduces the chances of infection spreading.

Lactoferrin also helps modulate the immune response. It can calm excessive inflammation while still promoting the activity of key immune cells. This balance helps your body respond effectively to threats without triggering unnecessary damage, making your immune system more resilient to daily challenges.

 

COVID and Long COVID: Support for Recovery

Lactoferrin gained attention during the COVID-19 pandemic for its potential to prevent viral particles from binding to cell surfaces, while also helping to reduce the inflammatory cascade that contributes to severe symptoms. A 2021 Lactoferrin Covid study from the University of Michigan revealed it to beat 1,425 available drugs and compounds in its ability to inhibit SARS-Cov-2.

For those experiencing long COVID, preliminary research suggests lactoferrin may help improve fatigue, increase energy levels, and support overall recovery. Its combined effects on infection management and inflammation make it a valuable tool for supporting the body’s natural healing processes.

 

 

Iron Regulation: Balance is Everything

Iron is essential for oxygen transport, energy production, and immune function, but too much or too little can be harmful. Lactoferrin acts as a natural regulator.

When iron levels are low, lactoferrin can enhance absorption, making it easier for your body to maintain healthy levels. When iron levels are high, it binds excess iron, reducing oxidative stress and limiting resources for bacteria. This balancing act protects your tissues, supports your immune system, and helps keep your energy levels stable.

 

Women’s Health: From Cycles to Comfort

Lactoferrin provides targeted benefits for women. Its anti-inflammatory properties can help reduce period discomfort, such as cramping and bloating, while its role in iron regulation supports overall energy during your cycle.

It also promotes vaginal health by helping maintain a balanced microbiome. By reducing inflammation and discouraging harmful bacterial overgrowth, lactoferrin helps protect against recurring infections and supports overall reproductive health.

 

Babies: Nature’s First Gift

Colostrum, the first “liquid gold” milk, is exceptionally rich in lactoferrin. It supports the newborn immune system, protects the developing gut, and enhances iron absorption. These actions help give babies a strong start in life.

Even formula-fed infants benefit from lactoferrin supplementation. Studies show it can reduce the incidence of gastrointestinal and respiratory infections, supporting growth and development while reinforcing early immunity. Scientists call lactoferrin "pink gold" because of its pale pink colour, but also its myriad benefits and high value. There is only 100mg of lactoferrin in a litre of cow's milk, so it's rare and expensive. This is why lactoferrin is considered a premium supplement (and Leapfrog's lactoferrin is extracted from fresh, raw cow's milk, not the byproduct whey as with other cheaper forms of lactoferrin - that way its closer to Mother Nature and with its bioactivity preserved).

 

Skin and Acne: Smarter Clear Skin

Acne isn’t just skin-deep. It starts with bacteria, inflammation, and nutrient availability. Lactoferrin works on multiple levels. It locks away iron, starving acne-causing bacteria and preventing them from multiplying. It also breaks down biofilms, the protective layers that make bacteria harder to eliminate.

Beyond its antibacterial effects, lactoferrin reduces inflammatory signals in the skin, calming redness, swelling, and irritation. It also supports repair mechanisms, helping skin heal faster after breakouts and neutralising bacterial toxins that can trigger further flare-ups. The result is fewer spots, less oil, and a calmer, healthier complexion, often noticeable within weeks.

 

Leapfrog's Love Affair With Lactoferrin

From immunity and iron balance to women’s health, baby’s first defences, skin clarity, and even support with long COVID, lactoferrin is a true multitasker.

It’s the star ingredient in Leapfrog formulas because it supports your body in multiple ways, naturally and effectively. You'll find it in our Leapfrog IMMUNE (for immune health), Leapfrog SNOOZE (for better sleep) and Leapfrog FOCUS (for improved memory, learning and clarity). Smarter health, powered by nature.

 

 

Reference list

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