The proprietary liposomal delivery system for bovine colostrum developed by Sovereign Laboratories is essential to ensuring optimal bio-availability and effectiveness. Colostrum supplements lacking liposomal delivery are simply not as effective.

When taking any colostrum supplement, it is vitally important that the colostrum molecules be protected from stomach acids and digestive enzymes until they reach the intestine, where they are then absorbed by the body for maximum benefit. To understand the importance of liposomal delivery, one must start at the beginning of an infant’s life and the beginning of mother’s colostrum production.

Colostrum, like milk, is produced by cells in the mammary gland, and like milk, it is expressed from the mammary cells. One of the components of colostrum, cell membrane fats or lipids, are secreted in tiny globules surrounded by a portion of the cell membrane from the mammary cell. This process (Figure 1 below) shows how a single secretory cell produces milk (or colostrum) fat globules by pinching off a globule from the cell membrane. The components which the cell uses to produce the milk fat are taken up by the cell into small vesicles, which then are processed through the organelles of the cell, the Golgi apparatus and the endoplasmic reticulum, to produce the fat globule. The mitochondria provide the energy that drives the process, while the nucleus of the cell contains the DNA that codes all the proteins the cell produces in its organelles. The membrane surrounding the globule acts to protect the milk fat and colostrum molecules from the digestive action of the gastrointestinal tract until it reaches the small intestine where it has the most benefit to the infant.

Figure 1. Expression of milk globule by mammary secretory cell.

Commercially prepared colostrum powder loses this protective membrane during the defatting, pasteurization, drying and/or freezing processes. In order to protect colostrum from an adult’s stomach acids and digestive enzymes, it is necessary to add back the phospholipid coating that was lost and to create phospholipid liposomes around the colostral components. This helps protect the colostrum as it passes through the stomach and delivers it to the small intestine where the individual components can be of most benefit. Liposomes can also penetrate skin surfaces and carry colostrum components into the bloodstream for further delivery throughout the body to organs and cells for use as needed. Liposomes also help prevent oxidation of the product between the time of manufacture and consumption.

Studies have shown that colostrum without liposomal delivery (LD) tends to clump together in the gastrointestinal tract, while colostrum with LD readily disperses for maximum absorption and effectiveness.1 Digestion studies comparing colostrum without LD to colostrum with LD show that liposomal delivery offers nearly 100% protection to IgG (immunoglobulin G) in the colostrum from being broken down by stomach acids and digestive enzymes; compared to almost a 50% destruction of immunoglobulin in colostrum without LD.2 Chemical studies have shown that the phospholipids in LD form liposomes, or tiny spheres of lipid which enclose and protect the contents, in this case colostrum.3

In addition to its protective effect, the phospholipids which make up LD have important physiological effects. All the body’s cells are protected by a cell membrane consisting of the same phospholipids as what’s in LD. These phospholipids play an important role in maintaining cell membrane health and function by providing a lipid “sea” in which important membrane proteins “float”. Problems can occur when these phospholipids are not present in the proper ratios. In nerve cells, for example, some chronic nervous conditions, such as Alzheimer’s disease, senile dementia and Parkinson’s disease, show improvement in symptoms following supplementation with phosphatidylserine.4-6 Down syndrome is also characterized by an imbalance in brain phospholipids.7

Phospholipids are helpful in counteracting the effects of stress, which in turn can affect the immune system and disrupt normal intestinal functioning.8-10 Phospholipids also play important roles in cell signaling — the way the interior environment of the cell communicates with the extracellular environment. These include growth inhibition, cellular differentiation and programmed cell death.11-13 Furthermore, phospholipids play crucial roles in maintenance of the barrier function of the skin,14,15 antimicrobial defenses of the skin,16 protection of the stomach lining against ulceration,17,18 preventing hepatitis C recurrence,19 blood clotting,20-23 and protein assembly.24

In short, LD provides not only an effective delivery system for the bioactive healing components in PRO Colostrum-LD® but provides vital nutrients in its own right.


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  2. Buhmeyer, J. Digestion studies done at independent laboratory in 2004, unpublished.
  3. Aust, D. Chemical analyses of liposomes, 2002, unpublished.
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