Why Six Hour Colostrum

Five Essential Facts about Bovine Colostrum

(1) With cows there is a hormone flux at the time of calving, that stops colostrum production and starts milk production, so there is only one udder full of colostrum.

(2) When colostrum production stops, instead of the vital colostrum components transferring from the cows bloodstream to the udder, the process is reversed, and the components begin to be reabsorbed back into the cows bloodstream, while at the same time they are replaced in the udder by common milk components.

(3) The change after 6 hours post calving is dramatic. By 12 hours vital proteins comprising the essential immune, regulating, and growth factors are reduced by 65%.

(4) Only colostrum collected within 0 to 6 hours post calving has maximum bioactivity.

(5) Only whole, intact, 100% pure colostrum such as Synertek has natural liposomal delivery and no artificially added lipids.

Degradation Over Time

The table below from the Fundamentals of Dairy Chemistry (a college textbook) shows degradation over time post calving.

why 1st six hour, table showing change over time

Marker levels typical of O hour colostrum and 6 hour colostrum.
0 & 1st six hour

Marker levels in Synertek colostrum compared to O and 6 hour colostrum.
Synertek compared to 0 hour and six hour colostrum.

Comparison of Synertek with other colostrum brands.

The products of eight leading competitors are compared to O hour and 6 hour colostrum in the graph below. This research was again conducted by a major United States university. None of Synertek’s competitors in the study have marker values consistent with those of O-6 hour bovine colostrum.

why 1st six hour, competitors

About Synergism

Nature, in her perfect way, has designed for the components of colostrum to complement each other. Working together in the correct proportions, they accomplish more than the sum of each component working independently. This is known as synergism. With colostrum from the first six hours, the components are in the proportions designed by nature to achieve maximum synergism. Only colostrum from the first six hours has the maximum synergism designed by Nature.

About Immunoglobulin Content

Immunoglobulin content is only one measure of colostrum quality, but it is perhaps more frequently referred to than any other measure of quality. Note that liquid six hour colostrum has 5.30% albumin by weight, which is mostly immunoglobulin, while colostrum from twelve hours has 2.96% albumin. Much of the colostrum on the market is not even from the first twelve hours, but is collected over a period of 24 hours and from two or more milkings.

About Lactose Content

Lactose content has a great influence on allergic-like responses experienced by some individuals. Lactose intolerant individuals (regardless of body weight) can usually tolerate up to about 77 mg. lactose before a response is likely to occur. (Ley) With colostrum from the first six hours, such individuals can easily use 600 mg of colostrum without worry. Some persons with lactose intolerance can use larger amounts without experiencing lactose intolerance symptomatology, and some report that their lactose intolerance vanishes entirely.

Lactose content rises over time, and from the first milking through the subsequent several milkings. This is another gauge for determining quality of colostrum.

Certified Analysis Lot #579

Component Specification Actual
Protein At least 48.9% 55.8%
Fat At least 18.9% 21.7%
Lactose * Less than 13.3% 11.6%
IgG ** Tentative 26.7%
Total Immunoglobulin Tentative 32.0%


* The amount of lactose in Synertek colostrum is too small to cause a reaction in lactose-intolerant persons, at the maintenance level of usage.

** IgG content can be a measure of colostrum quality, if the IgG level has not been artificially raised by altering the colostrum, such as by removing the fat. For highest quality colostrum make sure all of the above components fall near the specified values.