Why Enteric Protection Matters for Supplement Brands

At SREKE, we know that probiotic supplements are only as effective as their ability to survive stomach acid and reach the intestines alive. For supplement brand owners, distributors, and e-commerce sellers, this is a critical quality differentiator. According to industry data, up to 60% of probiotic strains can be destroyed by gastric acidity without proper protection, leading to consumer dissatisfaction and product returns. We have observed that the global probiotic market is projected to reach $77 billion by 2025 (Grand View Research), and brands that invest in enteric protection gain a competitive edge through improved product efficacy.

Common challenges we hear from brand owners include: inconsistent CFU counts at expiration, poor stability in humid climates, and difficulty proving shelf-life claims to retailers. Enteric protection solves these problems by using specialized coatings or encapsulation technologies that shield live cultures from gastric juice, bile salts, and moisture. At our GMP-certified facility in Guangzhou, we implement multiple enteric protection methods tailored to each client’s formulation and target market.

Key Manufacturing Considerations

Formulation and Dosage Forms

We offer enteric protection across multiple dosage forms: capsules (vegetarian or gelatin), tablets, and delayed-release powders. Our preferred method for high-CFU probiotics is enteric-coated capsules, which provide a physical barrier that dissolves only at pH 6.8 or higher—typically in the small intestine. For tablets, we use compression coating with pH-sensitive polymers such as hydroxypropyl methylcellulose phthalate (HPMCP) or cellulose acetate phthalate (CAP). Each formulation is developed in our in-house R&D lab, where we conduct accelerated stability testing under ICH guidelines to ensure viability for 24 months.

Quality Standards: GMP, Third-Party Testing, COA

Our facility operates under GMP certification (ISO 22000:2018 and HACCP). Every batch of enteric-protected probiotics undergoes rigorous quality control: we test for CFU count at multiple time points (0, 6, 12, 18, 24 months), moisture content, dissolution profile, and microbial purity. We provide a Certificate of Analysis (COA) with each shipment, and we offer optional third-party testing through Eurofins or SGS for added assurance. For US FDA compliance, all our labels follow 21 CFR 101.93 structure-function claims (e.g., “supports digestive health”), and for EU EFSA, we ensure no unauthorized health claims are made.

Regulatory Compliance

We help our clients navigate label requirements for both the US and EU markets. For the US, we ensure that probiotic strains are listed by genus, species, and strain designation, and that CFU counts are expressed at end of shelf life. For the EU, we follow the Novel Food Regulation (EU 2015/2283) for any new strains. Our enteric coating materials are food-grade and comply with FDA 21 CFR 175.300 for indirect food additives. We also offer kosher and halal certifications upon request.

How to Choose the Right OEM Partner

When you work with us at SREKE, you get more than just manufacturing—you get a partner who understands the science of probiotic delivery. Here’s what to look for in an OEM manufacturer:

• Technological Capability: Does the facility have fluid bed coating, spray drying, or encapsulation equipment for enteric protection? We use state-of-the-art fluid bed coaters (e.g., from Glatt) to apply uniform layers.
• Stability Data: Ask for real-time stability studies. We provide data at 25°C/60% RH and 40°C/75% RH for accelerated testing.
• MOQ Flexibility: Our minimum order quantity for enteric-coated probiotics starts at 50,000 capsules, with scalable options for pilot batches (10,000 units) for new brands.
• Lead Time: We typically deliver within 30–45 days after formulation approval, depending on complexity.

Red flags to avoid: manufacturers that cannot provide strain-level identification, those that refuse third-party audits, or those that guarantee unrealistic CFU counts without supporting data. Always ask: “What is your enteric coating dissolution profile?” and “Do you test for bile salt resistance?”

Industry Trends and Market Opportunities

The demand for enteric-protected probiotics is growing, driven by consumer awareness of gut health and the rise of targeted supplements (e.g., for immunity, mood, women’s health). According to a 2023 survey by the International Probiotics Association, 78% of consumers prefer delayed-release formulations for perceived higher efficacy. We also see opportunities in combining probiotics with prebiotics (synbiotics) in a single enteric-coated capsule, which we can formulate to maintain both components’ stability.

For e-commerce sellers, enteric protection reduces the risk of product complaints during shipping in hot climates. We offer blister packaging and moisture-barrier bottles as additional protection layers. By partnering with us, you can differentiate your brand with claims like “stomach-acid protected” or “targeted delivery” that resonate with informed consumers.

Frequently Asked Questions

Q: What is the minimum order quantity (MOQ) for enteric-coated probiotic capsules?
A: At SREKE, our standard MOQ is 50,000 capsules per SKU. For new brands or pilot runs, we offer a reduced MOQ of 10,000 capsules with a higher per-unit cost. Contact our team for a custom quote.

Q: How do you ensure probiotic viability during enteric coating?
A: We use low-temperature fluid bed coating (below 40°C) to protect heat-sensitive strains. We also add cryoprotectants like trehalose and maltodextrin to the coating solution. Each batch is tested for CFU count immediately after coating and at regular intervals during stability studies.

Q: Can you provide custom enteric coating for different release profiles?
A: Yes. We can adjust the coating thickness and polymer composition to achieve release at pH 5.5 (duodenum) or pH 6.8 (ileum). We work with your R&D team to optimize the dissolution profile based on your target strain and market claims.

Q: What certifications do you hold for probiotic manufacturing?
A: Our facility is GMP-certified (ISO 22000:2018 and HACCP). We also offer organic, kosher, and halal certifications upon request. All raw materials are sourced from FDA-registered suppliers, and we conduct heavy metal and pesticide residue testing per USP <232> and <561>.

Looking for a reliable OEM manufacturer for your supplement brand? SREKE provides GMP-certified custom formulation, private labeling, and contract manufacturing for softgels, capsules, tablets, powders, gummies, and liquids. Contact us at [email protected] or request a free quote — our team responds within 24 hours.