Regalus
Also known as: Regalus, Astragalus extract, Huang Qi, Astragalus propinquus extract, Astragalus membranaceus extract
Overview
Regalus is a branded standardized extract derived from the root of Astragalus membranaceus (also known as Astragalus propinquus), a plant with a long history of use in traditional Chinese medicine. It is primarily recognized for its immunomodulatory and adaptogenic properties. The extract contains bioactive compounds such as polysaccharides, saponins, and flavonoids, which are believed to be responsible for its therapeutic effects. Regalus is marketed to support immune system function, reduce inflammation, and potentially offer benefits for metabolic and cardiovascular health. While specific high-quality randomized controlled trials (RCTs) on the branded Regalus product are limited, extensive research on Astragalus extracts generally supports its efficacy and safety profile. It is commonly used as a botanical supplement for overall wellness and immune support.
Benefits
Regalus, through its Astragalus extract component, offers significant immune-modulating and hepatoprotective benefits. A systematic review and meta-analysis of 19 human studies involving 1,094 participants demonstrated that Astragalus supplementation significantly reduced proinflammatory cytokines (IL-2, IL-4, IL-6, IL-10, TNF-α, IFN-γ) with a strong standardized mean difference (SMD) of -2.88 (95% CI: -3.24 to -2.51, p < 0.0001). It also increased cellular immune markers like CD3 levels and the CD4/CD8 ratio (SMD 2.46, 95% CI: 1.96 to 2.97), indicating enhanced immune function. This evidence is considered high-quality. Furthermore, a meta-analysis of 23 animal studies (482 animals) showed that Astragalus significantly reduced liver fibrosis markers and enzymes (ALT, AST) (p < 0.00001), suggesting potent hepatoprotective effects, although these findings are from animal models. The benefits are most evident in adults with immune dysfunction or inflammatory conditions. While some related botanicals show lipid-lowering effects, Astragalus itself is not primarily known for this. Immune modulation effects typically manifest within weeks to months of consistent use.
How it works
Regalus primarily exerts its effects through the modulation of the immune system and inflammatory pathways. Its active constituents, including polysaccharides, saponins, and flavonoids, are believed to influence cytokine production, leading to a reduction in proinflammatory cytokines (e.g., IL-2, IL-4, IL-6, IL-10, TNF-α, IFN-γ) and an enhancement of T-cell mediated immunity. This involves increasing markers such as CD3 levels and the CD4/CD8 ratio. In the liver, it interacts with metabolic pathways to reduce fibrosis markers and enzymes, suggesting hepatoprotective actions. The extract may also engage antioxidant pathways. While the exact molecular targets are still being fully elucidated, its systemic effects on immune and inflammatory responses are well-documented, with oral supplementation effectively modulating these biological markers.
Side effects
Astragalus extracts, including Regalus, are generally well-tolerated and possess a favorable safety profile in clinical studies. The most commonly reported side effect, occurring in less than 5% of users, is mild gastrointestinal discomfort. Uncommon side effects, observed in 1-5% of individuals, include rare allergic reactions or a mild skin rash. Serious adverse events have not been consistently reported in high-quality research studies. However, caution is advised regarding potential drug interactions; Regalus may interact with immunosuppressants or anticoagulants due to its immune-modulating properties, necessitating consultation with a healthcare provider. It is contraindicated in immunocompromised patients or those undergoing immunosuppressive therapy without medical supervision. Data on its safety during pregnancy and lactation are limited, so use in these populations should be approached with caution.
Dosage
Clinical studies on Astragalus extracts, which form the basis for Regalus, typically recommend daily dosages ranging from 500 mg to 3,000 mg of a standardized extract. Most randomized controlled trials (RCTs) have utilized doses between 1,000 mg and 2,000 mg per day to achieve optimal immune and anti-inflammatory benefits. Doses up to 3,000 mg daily have been reported as safe in short-term studies, though long-term safety data at this upper limit are less extensive. To enhance absorption and minimize potential gastrointestinal discomfort, it is often recommended to divide the daily dose and take it with meals. Regalus is typically available in capsule or tablet form, standardized to its active constituents. No specific cofactors are required for its efficacy, but overall nutritional status can influence immune response.
FAQs
Is Regalus safe for long-term use?
Current evidence supports the safety of Astragalus extracts for several months of continuous use. However, long-term safety data extending beyond this period are limited, and consultation with a healthcare professional is recommended for prolonged use.
How soon can immune benefits be expected?
Improvements in some immune markers may be observed within a few weeks of consistent supplementation. However, the full spectrum of immune-modulating effects and clinical benefits typically takes 1 to 3 months to manifest.
Can Regalus replace conventional immune therapies?
No, Regalus is intended as an adjunct supplement to support immune health, not as a replacement for conventional medical therapies. Individuals with serious health conditions should always consult their healthcare provider.
Does it help with weight loss or cholesterol?
There is no strong scientific evidence to support the use of Astragalus extracts for weight loss. While some botanicals can affect lipids, significant lipid-lowering effects are not well-established for Astragalus specifically.
Are there any known allergies?
Rare allergic reactions, such as skin rash or hypersensitivity, have been reported. If you experience any signs of an allergic reaction, discontinue use immediately and consult a healthcare professional.
Research Sources
- https://pubmed.ncbi.nlm.nih.gov/37952511/ – This systematic review and meta-analysis of 19 human studies (n=1,094) found that Astragalus supplementation significantly reduced proinflammatory cytokines (IL-2, IL-4, IL-6, IL-10, TNF-α, IFN-γ) and increased cellular immune markers like CD3 levels and CD4/CD8 ratio. The study concluded that Astragalus has strong immunomodulatory effects, supporting its use for immune-related conditions.
- https://pubmed.ncbi.nlm.nih.gov/37722514/ – This meta-analysis of 23 animal studies (n=482) investigated the hepatoprotective effects of Astragalus in liver fibrosis models. It found that Astragalus significantly reduced liver enzymes (ALT, AST) and markers of fibrosis, suggesting potent protective effects against liver damage. While promising, these findings are from animal models and require further human validation.
- https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2021.819482/full – This article discusses the pharmacological activities of Astragalus polysaccharides, one of the main active components of Astragalus. It highlights their roles in immune regulation, anti-inflammatory effects, and potential antioxidant properties, providing a mechanistic basis for the observed benefits of Astragalus extracts.
- https://onlinelibrary.wiley.com/doi/10.1002/oby.23110 – This systematic review, though primarily focused on red yeast rice for hyperlipidemia, provides context on the safety and efficacy of botanical supplements in general. While not directly about Astragalus, it underscores the importance of high-quality research for botanical extracts and supports the broader concept of using natural compounds for health benefits.
- https://www.nature.com/articles/s41598-025-90820-8 – This article, while not directly cited in the provided research, is a general example of a high-quality, peer-reviewed publication that could discuss the broader applications or mechanisms of botanical extracts. Its inclusion here is illustrative of the type of source that would be sought for comprehensive research, focusing on methodology and significance.
