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Creating world-changing calcium based on science


Our patented particle pulverization technology, developed by expert researchers led by Professor Dr. Young K. Shim in 2006, and further advanced by the bio tech company INHIS, has been scientifically proven to maximize calcium absorption rate and bioavailability without altering the calcium component. Our nano calcium technology, backed by successful clinical trials, dramatically improves the body's absorption rate without causing digestive reactions, and maximizes calcium absorption while minimizing potential side effects. Choose the most advanced and innovative natural solution to support your bone health, dedicated to delivering the safest and most effective way to keep your bones and teeth strong and healthy.


What is Nano and why is it so important?

A nanometer (nm) is a tiny unit of length, equal to one billionth of a meter (1/1,000,000,000 m). With this incredible microscopic size, o ur calcium particles have a high absorption rate and promote smooth digestion.

micron calcium nano calcium

(Calcium micron particles) (Calcium nano particles)

Our cutting-edge technology means that each dose of BonStrong Nano Calcium is packed with the highest-quality calcium particles that your body can absorb and use to support your bone and joint health.

Celebrated by Science

Our technology is the Jang Young-sil Award-winning Science and Technology Grand Prize winner in South Korea, the year's best scientific achievements. It remains one of the only technologies worldwide capable of producing nano-sized dietary supplements.




Eastern medicine meets western science



Unlike most calcium supplements made from rocks, BonStrong Nano Calcium uses only high-quality oyster shells that undergo a 10-step purification and pulverization process to create hyper-pure calcium. Oyster shells have been used in traditional medicine for centuries and have been recognized by UNESCO as a valuable cultural heritage. You can trust that BonStrong Nano Calcium provides a top-tier calcium supplement, carefully produced from natural sources.


Recognized Credibility and Achievements

Certificate of confirmation for test parameters. Analysis performed by FDA and California Department of Health Services (DOHS) registered laboratories.



BonStrong Nano Calcium is nationally recognized for its effectiveness and popularity, having been featured on top news stations such as KBS, MBC, and SBS in 2006, as well as on CBS talk show in 2023, demonstrating the quality and credibility of our product.

Wellness Magazine - Own Your Bones

CBS Talk Show

Korean Main News Broadcast

Reference News Article (Korean)

Korea Herald Business News

Our Product

We understand that trust is everything when it comes to your health. Our meticulous crafting process ensures that every bottle of our supplement is of the highest quality, delivering maximum support for your bone health and wellness.

Distributed in:  USA, South Korea, Canada, and Switzerland 


made in usa designed in korea gmo free

Mission: Bone Strength

To help people to live a robust life

without bone disease.

Scientific Research References

*Arezoo Erfanian, Hamed Mirhosseini, Mohd Yazid Abd Manap, Babak Rasti, Mohd Hair Bejo. (2014). "Influence of nano-size reduction on absorption and bioavailability of calcium from fortified milk powder in rats"

*Sherry Huang, Jin Ching Chen, Chin Wei Hsu and Walter H Chang. (2009). "Effects of nano calcium carbonate and nano calcium citrate on toxicity in ICR mice and on bone mineral density in an ovariectomized mice model"

*H. S. Park, B. J. Jeon, J. Ahn and H. S. Kwak. (2007). "Effects of Nanocalcium Supplemented Milk on Bone Calcium Metabolism in Ovariectomized Rats "

*Lee YK, Jung SK, Chang YH, Kwak HS. Highly bioavailable nanocalcium from oyster shell for preventing osteoporosis in rats. Int J Food Sci Nutr. 2017;68(8):931-940. doi:10.1080/09637486.2017.1307948