Supports Overall Bone Health & Density in Women

NatruCal® aids in maintaining/increasing overall bone density in women by providing a highly bioavailable, natural source of calcium and the necessary co-factors needed for calcium absorption and utilization.  NatruCal® also contains other essential bone nutrients like vitamin D3 and vitamin K2, making it a full-spectrum women’s bone health supplement.

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NatruCal® – Avoid the “Calcium Bomb”

Dr. Rudi explains the importance of modulated estrogen levels in relation to calcium absorption for women.

Learn why many women often mistakenly consume ineffective “calcium bombs” that are not properly absorbed and put to use in women’s bodies. Dr. Rudi details how the NatruCal® formulation combines phytoestrogens, essential vitamins, and a unique source of calcium to ensure women achieve maximum bone density.

A Full Spectrum Bone Health Supplement for Women

A Highly Bioavailable Source of Calcium

NatruCal® is formulated leveraging eggshell calcium, which is among the most highly bioavailable source of calcium that can be easily assimilated by the body.  Eggshell calcium contains transporter proteins (bound to the shell) and trace minerals such as strontium, magnesium, zinc, boron, and phosphorus—all easily absorbed by the body.

Essential Co-Factors for Improved Bone Health

NatruCal® is formulated with bone healthy vitamins D3 and K2.  Vitamin D3 aids in the absorption of the calcium while K2 moves the calcium throughout the body, effectively reaching the bones.

Estrogen Regulation for Improved Bone Health

NatruCal® contains plant-based phytoestrogens HMRLignans, which have been clinically shown to regulate and stabilize estrogen levels in women.  The regulation of estrogen has been independently shown to dramatically increase calcium absorption and improve bone mineral density.  Even if a woman is consuming adequate amounts of calcium and calcium co-factors, she may still experience bone health issues if estrogen is imbalanced.

“Women and Bone Density”

Millions of women across the US face bone mineral density issues that put them at risk of debilitating fractures and breaks.  If proper measures are not taken early, the risk grows in severity and can dramatically affect a women’s quality of life in her later years.  Unfortunately, women are more at risk than men for bone health issues later in life due to biology.  Women start with less bone density and lose it faster with age than their male counterparts.

Below is a look at some numbers about bone health:
  • 1 in 3 women over the age of 50 will experience osteoporotic fractures
  • Osteoporosis and low bone mass are currently estimated to be a major public health threat for almost 44 million U.S. women and men aged 50 and older.
  • A 10% loss of bone mass in the vertebrae can double the risk of vertebral fractures, and similarly, a 10% loss of bone mass in the hip can result in a 2.5 times greater risk of hip fracture
  • 80%, 75%, 70% and 58% of forearm, humerus, hip and spine fractures, respectively, occur in women.

Source: International Osteoporosis Foundation

Estrogen Irregularities: The Unknown Culprit to Women’s Bone Issues

As women age they face a continually increasing risk of bone-mineral density issues and low calcium levels.  Fluctuations and irregularities in estrogen levels are in fact one of the major causes for this risk women face.  As estrogen plays a key role in the assimilation, absorption, and utilization of calcium within the intestine, disharmony in levels decreases overall calcium and bone-mineral density in women.  Many women do not realize that though they may be consuming adequate amounts of calcium, an imbalance in estrogen limits how much of that calcium is actually processed and put to good use.

Vitamin K2:  The Missing Co-Factor

In order to combat depleting levels of calcium and bone-mineral density, women often later in age begin to supplement calcium into their diet.  While many women know that calcium should be consumed alongside vitamin D3 to aid in absorption, fewer know that a third and highly essential co-factor can aid in this process:  vitamin K2, or MK7.

Vitamin K2 plays an important role in the vitamin D3 and calcium relationship.  Once ingested, the body naturally creates vitamin K2-dependent proteins that transport calcium to different areas of the body.  Until vitamin K2 is present, the proteins remain inactive and cannot distribute the needed calcium throughout the body.

NatruCal®: A Full Spectrum Bone Health Supplement for Women

NatruCal® is a full spectrum bone health supplement designed to specifically improve overall bone health and density in women.  The formulation combines a highly bioavailable source of calcium that is delivered in ideal serving dosages along with the essential calcium and bone health co-factors, vitamin D3 and vitamin K2.  The combination ensures that calcium is fully-absorbed and delivered throughout the body.

The NatruCal® formulation also supports healthy estrogen levels, which are known to promote bone health in women.  The phytoestrogens found in HMRLignans modulate fluctuating estrogen levels, providing balance and thus improving bone health and overall calcium absorption in the female body.

Ideal Serving of Calcium Without Risk of Health Complications

Too much of anything can be detrimental.  That is definitely the case when it comes to calcium supplementation.  Additional health risks are created when people consume large, once daily dosages of calcium without the proper co-factors.  High calcium intake can dramatically change stomach pH level, cause burp-back, create kidney stones, and lead to long-term health risks like heart disease and calcification of the arteries.

NatruCal® provides an ideal twice daily dose of calcium without the risk of overconsumption.  It also provides the necessary co-factors that absorb and distribute the calcium throughout the body.  Appropriate consumption of calcium will prevent unnecessary calcium buildup in the body.

Essential Co-Factors for Improved Bone Health

NatruCal® is formulated with both vitamin D3 and K2 to improve bone health through proper absorption and utilization throughout the body.  Vitamin D3 aids in the absorption of the calcium and vitamin K2 moves the calcium throughout the body and to the bones.  The relationship between calcium, vitamin D3, and vitamin K2 is essential to bone health because they all work together synergistically.  When vitamin D3 is consumed, vitamin K2-dependent proteins are naturally created that are intended to deliver the calcium to the body.  Without vitamin K2 consumption however, they lay dormant and ineffective.

Vitamin D3 and the Protein Transporters: When vitamin D3 is processed by the body it creates a unique protein that acts as a vehicle for delivering calcium throughout the body.
Protein Transporters Activated by Vitamin K2: The special proteins created by vitamin D3 are inactive until K2 is present. Once joined, K2 collaborates with the proteins to begin transportation and delivery of calcium.
K2 Protein Transporter Picks-Up Calcium Along the Way: The K2 protein transporter acts like a taxi cab once activated, picking-up calcium along its journey and redirecting it to the areas of the body that need it.
K2 Protein Transporter Picks Up Calcium Along the Way: The K2 protein transporter in essence acts like a taxi cab and will also pick up Calcium that is in places within the body it doesn’t need to be. So for example if there is Calcium in the arteries the transporters will pick it up and deliver to the bones if that is where it is needed.

Supports Estrogen Regulation & Tackles Women’s Bone Issues at the Source

NatruCal® contains plant-based phytoestrogens, HMRLignan, which are clinically shown to regulate and stabilize estrogen levels in women.  The regulation of estrogen has been shown to dramatically increase calcium absorption and improve bone-mineral density.  Imbalanced estrogen can still impair bone health in women who are consuming adequate amounts of calcium.

HMRLignan is an ideal form of “healthy estrogen” because it does not actually add estrogen to the body.  HMRLignan is converted to versatile phytoestrogens, enterodiol and enterolactone when consumed.  Both phytoestrogens have anti-estrogenic and estrogenic effects that are used accordingly based on the needs of the body.

NatruCal® Ingredients & Formulation

Eggshell Calcium

The source of calcium found in NatruCal® is eggshell calcium derived from USA eggshells that are heat sterilized to ensure safety.  Eggshell calcium is a highly bioavailable source of calcium due to its content of effective transporter proteins and essential trace minerals like strontium, magnesium, zinc, boron, and phosphorus.  Unlike most other calcium sources, derived from rocks such as limestone, eggshell calcium is very low in dangerous heavy metals.

Vitamin K2 as MK7

MK7 is a highly bioactive form of vitamin K2 that is created using a natural fermentation process and is much different than its readily-abundant counterpart vitamin K1, found in many leafy and green vegetables.  Vitamin K2 plays a crucial role in bone health by activating the K2-dependent proteins that transport calcium throughout the body.

Vitamin D3

NatruCal® is formulated with a balanced serving of vitamin D3, which is essential for the absorption and utilization of calcium within the body.  Without vitamin D3, the body cannot effectively absorb calcium.


HMRLignan is derived from Norwegian pine spruce and is 1000× more bioavailable than Lignans found in flax seeds.  Naturally-occurring flora in the gut easily converts HMRLignan to phytoestrogens, which work to regulate and balance estrogen.

Supplement Facts & Serving Instructions

Serving Instructions: Take 2 per day with food.

Other Ingredients: Hypromellose, Microcrystalline cellulose, Silica

Contains: Egg

Warning: Pregnant or nursing mothers should consult a physician before using this or any dietary supplement

Allergen: Product contains eggshells. The product does not contain any other major food allergens listed under 2003/89/EC or 21 U.S.C. 321 (qq).