Which best licorice root supplement is certified for quality?

When you search for a licorice root supplement, "certified for quality" is far more than a marketing phrase. It signals that a product has been tested, verified, and produced under standards that guarantee purity, potency, and safety. This guide explains what quality certification really means for licorice root supplements and how to choose a product you can trust.

What does "certified for quality" mean for licorice root?

Quality certification is granted by independent third-party organizations that audit a manufacturer's facilities, processes, and testing procedures. For licorice root supplements, the certifications that matter most include ISO22000 for food safety management, BRCGS for global food safety, SGS-GMP for good manufacturing practices, ISO9001 for quality management, and religious certifications such as HALAL and Kosher. Organic certification, such as the Ecocert Organic Standard, additionally verifies that the raw botanical material is grown without synthetic pesticides or fertilizers.

A certified product is not just a bottle with a label. It is backed by documented batch records, a certificate of analysis (COA), and traceability from raw material to finished powder. When a manufacturer holds these credentials, buyers gain confidence that every batch meets the same specification.

The compound that defines licorice quality: glycyrrhizic acid

The quality of a licorice root supplement is largely defined by glycyrrhizic acid, the active compound responsible for licorice's characteristic sweetness and many of its traditional health benefits. However, glycyrrhizic acid also has a downside: in high amounts it can raise blood pressure and disrupt electrolyte balance. This is why responsible manufacturers carefully control and document its concentration in every batch.

Independent testing has shown how much quality varies across the market. In a 2026 review, ConsumerLab purchased and tested popular licorice and DGL products and found that half of the DGL supplements failed testing because they contained higher-than-expected levels of glycyrrhizic acid, meaning the compound had not been adequately removed despite the "deglycyrrhizinated" claim on the label. The same review found that licorice tea delivered up to 46 mg of glycyrrhizic acid per brewed cup, far more than many capsules. These findings underline why buyers should verify actual test results rather than rely on label claims alone.

DGL or standard licorice root extract: which is right?

Licorice root supplements generally come in two forms. Standard licorice root extract retains its natural glycyrrhizic acid content and is commonly used for respiratory comfort, digestive support, and as a flavoring ingredient. DGL (deglycyrrhizinated licorice) has most of the glycyrrhizic acid removed, making it a gentler option for people who are sensitive to the compound or concerned about blood pressure.

Both forms have their place, and a quality-certified manufacturer can supply either with a documented specification. The key is that the glycyrrhizic acid level is measured, controlled, and stated on the certificate of analysis, so formulators can choose the right material for their target application.

How certified manufacturers verify quality

Behind every certified licorice root supplement is a rigorous testing and production process. A reliable manufacturer operates an independent laboratory equipped with HPLC, GC, and UV instruments to quantify active compounds such as glycyrrhizic acid and to screen for contaminants. Production takes place in a clean area that meets food-grade requirements, and every batch is tested before release.

For example, Hangzhou Greensky Biological Tech. Co., Ltd. produces Licorice Root Extract Powder in a 100,000-class clean production area, with an independent laboratory using GC, HPLC, and UV for quality control. The company holds ISO22000, BRCGS, Ecocert Organic Standard, SGS-GMP, ISO9001, HALAL, and Kosher certifications, and provides export registration and documentation to support global regulatory submissions.

Why source from a certified manufacturer

For supplement brands, food manufacturers, and distributors, the fastest way to guarantee quality is to source from a certified manufacturer rather than a middleman. A certified plant extract manufacturer controls the entire chain, from raw material selection to extraction, testing, and packaging, which reduces the risk of contamination and inconsistent potency.

Greensky, a plant extract manufacturer founded in 2004, has over 20 years of experience producing active botanical ingredients. With 5 wholly-owned subsidiaries and full vertical integration, the company supplies plant extracts, functional red yeast rice, and health product raw materials to markets in Europe, the United States, South Korea, and Russia. In 2023, its export value reached nearly $30 million, reflecting the trust of international buyers.

Final thoughts

The best licorice root supplement is not necessarily the most expensive or the most heavily advertised. It is the one produced by a manufacturer with recognized quality certifications, documented glycyrrhizic acid levels, and a transparent testing process. Whether you are choosing a supplement for personal use or sourcing raw material for your own brand, always ask for the certificate of analysis and verify the manufacturer's credentials. When you choose a certified china plant extract supplier, quality is no longer a guess.