Introduction

Nowadays dietary supplements are occasionally labelled gastro-resistant. Often the question arises what does gastro-resistant mean and what is it good for? This blog will give more insight into gastro-resistant supplements and their benefits.

Gastro-resistance

Gastro-resistance

When a dietary supplement is labelled as gastro-resistant, the supplement is resistant to being broken down by the gastric acids in the gastric system. Gastro-resistant tablets are made to prevent the absorption of the nutrients in the stomach. By preventing absorption in the stomach, gastro-resistance helps to deliver nutrients to be absorbed in the right place, which are, in case of gastro-resistant supplements, mostly the intestines.

Other benefits of enteric coatings include masking of the taste and smell. In addition, enteric coatings can help to make products more stable by preventing chemical reactions of active ingredients that are sensitive to light, oxygen, or humidity.

Enteric coatings

Enteric coating

To make dietary supplements gastro-resistant, enteric coatings are added. These enteric coatings prevent breakdown by gastric acids. Enteric coatings resist the acidic environment of the stomach and are broken down in the higher pH environment of the intestinal fluid. The enteric coatings mostly consist of surface material that is stable at very acidic pH values found in the stomach but are broken down at higher, alkaline pH values found in the small intestine.

An enteric coating normally consists of materials such as fatty acids, waxes, plastics, shellac, and plant fibers.

Gastro-resistant supplements

Gastro-resistant dietary supplements

Regarding the application of enteric coatings in dietary supplements, they are mainly applied to probiotics. This prevents the probiotics from being broken down by gastric acids and increase their uptake in the intestines.

Gastro-resistant coatings are also applied to fish oil supplements. In this case the coatings help to prevent gastroesophageal reflux (fishy reflux/burping) that often happens with fish oil tablets.

The application of enteric coatings to fat-soluble vitamins is suggested to be beneficial, as fat-soluble vitamins are usually not dissolved in the stomach and are preferably absorbed in the intestinal tract. Fat-soluble vitamins include vitamin A, D, E, and K.

Conclusion

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We Advise on Gastro-resistant supplements

Gastro-resistance prevents nutrients to be broken down by gastric acids. A supplement is made gastro-resistant by applying an enteric coating. Enteric coatings can be useful for probiotics, fish oils, and fat-soluble vitamins.

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References

References

GmbH, G. P. (2022, 26 juli). Coating – knowledge food supplements. Goerlich Pharma. https://www.goerlich-pharma.com/en/refinement-technology-dietary-supplements/

Patel, H., & Solanki, N. (2012). Gastro resistant drug delivery system: A review. ResearchGate. https://www.researchgate.net/publication/289466207_Gastro_resistant_drug_delivery_system_A_review

Terracina, F., Caruana, R., Bonomo, F. P., Montalbano, F., & Licciardi, M. (2022). Gastro-Resistant Microparticles Produced by Spray-Drying as Controlled Release Systems for Liposoluble Vitamins. Pharmaceutics14(7), 1480. https://doi.org/10.3390/pharmaceutics14071480