This is an independent scientific review of Cosmic Hue, our daily gut-calming plant blend.
Cosmic Hue was created during my own recovery from 16 years of Crohn's disease.
I know how powerful Cosmic Hue is based on my own results, but that doesn't prove that the blend works for everyone else.
So I had an external scientific consultant, Dr Tamla Evans (PhD, CPsychol), examine the peer-reviewed research behind every single ingredient in Cosmic Hue and report what she found.
In short, the science behind the plants is real and points the right way. Fennel has the strongest evidence in people, and no study has yet tested the full blend.
Below, I'll take you through what the review found for each plant.
What Does the Science Say About Cosmic Hue?
First, a quick word on evidence, because it matters here. Human evidence comes from studies in real people, the strongest kind. Lab evidence comes from cells or animals. It shows how a plant works, but not yet whether the same holds in people.
So here's what the science show. Cosmic Hue is built on real biology, and every plant in it works on something that matters for your gut, from calming inflammation to soothing the lining, easing bloating, supporting your immune system and steadying the link between your gut and your mind.
The human evidence for digestion is limited to moderate overall, and no study has tested the full Cosmic Hue blend as a single product. Every finding is plant by plant.
What the Review Found, Plant by Plant
Here's what the review found for each of the seven plants.
Fennel The review found the strongest direct human evidence of any plant in the blend, with studies showing fennel relaxes the gut, calms spasms and reduces bloating and abdominal discomfort in real people. The lab research points the same way.
Ashwagandha The gut-brain plant. Several human trials show it lowers stress and cortisol, and because stress and digestion are so closely tied, the report treats this as a plausible route to a calmer gut. Moderate evidence in people, strong on mechanism.
Cat's claw Studied mainly for inflammation. Lab work shows it can switch off TNF-alpha, one of the body's inflammatory messengers. The mechanism is well supported, the direct human gut evidence is more limited.
Nettle Another anti-inflammatory. Studies show it blocks NF-kB, an inflammatory signalling pathway, with antioxidant effects alongside. Promising in the lab, with human trials still light.
Marshmallow root The gut-lining soother. It's rich in mucilage, a gel that may form a protective layer over irritated tissue, and lab studies point to antioxidant and anti-inflammatory effects. The human evidence here is early.
AstragalusImmune and antioxidant support. Preclinical studies suggest antioxidant and protective effects that may help keep the gut lining resilient. Strong on mechanism, weaker on human evidence.
Echinacea One of the most studied immune plants, with one caveat from the report. Its human evidence is mostly about immune and respiratory health, like fighting off colds, rather than digestion specifically.
You can also find the full evidence I've researched on our science page.
How Strong Is the Evidence for Each Ingredient?
Evidence interpretation
Strong: Multiple consistent studies or well-established mechanisms
Moderate: Limited human evidence and/or consistent mechanistic support
Weak: Preliminary, indirect, or limited evidence only
Frequently Asked Questions
Is Cosmic Hue clinically proven?
Not the full blend, and I'll always be straight with you on that. The individual plants are well studied, with fennel and ashwagandha the strongest in people. The blend itself hasn't had its own trial yet.
Is Cosmic Hue safe to drink?
For most people, yes. It's 100% vegan, caffeine-free and free from the 14 major allergens, and the ingredients are generally well tolerated. If you're on medication, pregnant or breastfeeding, have a quick word with your doctor first, as some herbs can interact.
Can Cosmic Hue replace my medication?
No. It's a daily plant blend to enjoy alongside your routine, not a replacement for anything your doctor has prescribed, so always check with them before making changes.
Conclusion
The review found that each of the seven plants brings its own unique benefit.
Fennel eases bloating and discomfort, ashwagandha calms the stress side of the gut-brain link, cat's claw and nettle help settle inflammation, marshmallow root soothes the gut lining, astragalus adds antioxidant and immune support, and echinacea helps the immune system.
Fennel has the strongest evidence in people, while the others rest on solid mechanistic research with human trials still building. Cosmic Hue brings all seven plants together, chosen to work as one daily blend.
Based on the Independent Scientific Evidence Review of the Cosmic Hue formulation by Dr Tamla Evans, PhD, CPsychol.
Author: Manny is the founder of Fifth Ray and a certified Gut Health Coach. After battling Crohn's Disease for 16 years, he transformed his gut health through plant-based healing. His story has been featured on BBC, ITV, and Daily Mail.
Disclaimer: This information is for education only. Cosmic Hue is not intended to diagnose, treat, cure, or prevent any disease. Always speak to your healthcare provider before changing your routine.
References
Auyeung KK et al. Astragalus membranaceus: A review of its protection against inflammation and gastrointestinal cancers. Am J Chin Med. 2016;44(1):1–22.
Badgujar SB et al. Foeniculum vulgare Mill: A review of its botany, phytochemistry, pharmacology and toxicology. Biomed Res Int. 2014;2014:842674.
Barrett B. Medicinal properties of Echinacea: a critical review. Phytomedicine. 2003;10(1):66–86.
Chandrasekhar K et al. A prospective, randomised double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of Ashwagandha root in reducing stress and anxiety. Indian J Psychol Med. 2012;34(3):255–262.
Mahboubi M. Marshmallow (Althaea officinalis L.) and its potency in the treatment of cough. Complement Med Res. 2020;27(3):174–183.
Portincasa P et al. Curcumin and fennel essential oil improve symptoms and quality of life in patients with irritable bowel syndrome. J Gastrointestin Liver Dis. 2016;25(2):151–157.
Riehemann K et al. Plant extracts from stinging nettle inhibit NF-kappa B activation. FEBS Lett. 1999;442(1):89–94.
Sandoval M et al. Anti-inflammatory and antioxidant activities of cat's claw. J Ethnopharmacol. 2000;72(1–2):187–196.
Shah SA et al. Evaluation of echinacea for the prevention and treatment of the common cold: a meta-analysis. Lancet Infect Dis. 2007;7(7):473–480.