Ancient Nutra Wellness Team · 7 September 2026 · 6 min read
A letter about the blood sugar claims we will not make
By the Ancient Nutra Editorial Team
Key takeaways
- Ancient Nutra does not claim the Sugar Balance System lowers blood sugar. That sentence is on the product page itself, not just in this letter.
- One effect in the box is demonstrated: gymnemic acids in Gurmar temporarily block the sweet taste receptor on the tongue, so sweet food registers as less sweet for a short while.
- Venivel has no human clinical trials at all. It is in the box on the strength of Sri Lankan tradition, and the box says so.
- We removed the words "and HbA1c" from the Ceylon cinnamon page after reading the trial properly. The trial found no significant change in that marker.
A reader wrote in last week with a fair question. She had read three of our posts about blood sugar, she was on metformin, and she wanted to know one thing before she spent LKR 5,500: will this lower my numbers. The honest answer is no, we do not claim that, and it took us longer than it should have to learn to say it that plainly. This is a letter about what we decided not to put on the box, and why that decision belongs to the product as much as anything inside it.
Say the limit out loud, on the page people actually buy from
It is easy to be careful in a blog post and loose on a product page. The blog is where a brand performs its scruples. The product page is where it takes money. So the test we set ourselves was simple: whatever restraint we practise in an article has to survive onto the listing, in the same words, where a buyer sees it before checkout.
Read Ancient Nutra's Sugar Balance System page and you will find this: apart from Gurmar's short lived effect on sweet taste, these herbs' effects on blood sugar itself have not been established in clinical trials. That line cost us conversions. We kept it anyway, because a customer who buys on a promise we cannot keep is a customer we have to lose twice.
Separate the one thing that is proven from the two that are not
Three herbs sit in that box, and the evidence behind them is not equal. Pretending otherwise would be the easy version of this business.
Gurmar (Gymnema sylvestre). The taste effect is real and repeatable. Gymnemic acids from the leaf bind to the sweet receptor and suppress it briefly, which is why a sugared tea can taste like warm water for a few minutes afterwards. What has not been established is the step everybody wants next. The cleanest controlled trial we have found, published in the Journal of Medicinal Food in 2017, tested Gymnema sylvestre in adults with metabolic syndrome and did not deliver the result the marketing version of this plant would need. The United States National Institutes of Health notes that its effectiveness for blood sugar has not been shown. We treat that trial as a boundary on how long we can responsibly suggest taking it, roughly 12 weeks, rather than as proof of anything.
Ceylon cinnamon (Cinnamomum verum). True Ceylon cinnamon, naturally low in coumarin, unlike the cassia sold as cinnamon almost everywhere else. This is the one place we let a little heritage in, because the bark has been a daily kitchen spice in Sri Lankan homes for centuries and that is a plain fact about a plant, not a health claim.
Venivel (Coscinium fenestratum). The yellow wooded vine. There are zero human clinical trials of this plant. Not weak trials, not mixed trials. None. It is in the box because Sri Lankan practice has used it for a very long time, and that is the whole of the case for it. Anyone who tells you more about Venivel than that is telling you something they cannot support. We wrote out the full position in what we actually know about venivel.
Admit the correction rather than quietly deleting it
We got one wrong. The Ceylon cinnamon capsule page used to say the herb had measurable effects on fasting glucose and HbA1c markers. When we went back to the trial we were leaning on, a randomised double blind study of Ceylon cinnamon extract published in PLOS One in 2025 with 150 participants over 12 weeks, the fasting glucose finding held up and the HbA1c finding did not. The change in that second marker was not statistically significant.
So we struck the words "and HbA1c" from the page. We did not go hunting for a friendlier study to put in its place, which is the move that keeps most supplement copy technically citable and practically dishonest. One clause less on a page nobody was complaining about is not a dramatic act of integrity. It is just the job. We mention it here because a brand that never publishes its corrections is either perfect or not looking.
Treat safety information as part of the offer, not the small print
Restraint about benefits means very little without the same candour about risk. Both Gurmar and Ceylon cinnamon carry a documented, rare association with liver injury in the NIH LiverTox database. Rare is the operative word, and it is not a reason to avoid either herb. It is a reason to keep use bounded and to know what to watch for. Stop taking either and speak to a doctor if you notice yellowing of the skin or eyes, unusually dark urine, persistent nausea, or unusual tiredness.
The second point matters more for the reader who wrote to us. If you take metformin, insulin, or any other blood sugar medication, talk to your doctor before starting. Gurmar and cinnamon may add to the effect of those medicines. A supplement that is honest about doing very little on its own can still interact with something that does a great deal.
Look for
On any blood sugar supplement, look for a named species rather than a category, a stated duration rather than open ended daily use, and an explicit line about medication interaction. If a label promises a number your doctor measures, that is the label to put down. Our own bounded protocol is set out in the Sugar Balance System in order.
The bottom line
The Sugar Balance System is a food supplement and a bounded routine built around three traditional herbs, one demonstrated taste effect, and a set of claims we have deliberately left unmade. It is meant to sit alongside the care your doctor provides, never in place of it. If that sounds like less than the category usually offers, it is. It is also the only version of this product we are willing to sign our name to, and if the sceptical version is the one you want, start with our evidence ranking of the blood sugar herbs ranked by evidence before you buy anything at all, from us or anyone else.
Sugar Balance System
Gurmar, Ceylon Cinnamon and Venivel in one bounded 30 day box, with the limits printed on the page.
Shop Sugar Balance SystemSources and further reading
- Gymnema sylvestre monograph, NIH LiverTox, National Institute of Diabetes and Digestive and Kidney Diseases.
- Zuniga et al., Effect of Gymnema sylvestre Administration on Metabolic Syndrome, Insulin Sensitivity, and Insulin Secretion, Journal of Medicinal Food, 2017.
- Effects of Cinnamomum zeylanicum extract on lipid profile, glucose levels and its safety in adults: a randomised, double blind, controlled trial, PLOS One, 2025.
Written by the Ancient Nutra Wellness Team. The team researches, sources, and tests every ingredient before it earns a place in an Ancient Nutra blend. Questions? Email info@ancientnutra.com or message Ancient Nutra on Instagram.
Medical disclaimer: This article is for educational purposes only and is not medical advice. Statements have not been evaluated by the FDA. Ancient Nutra products are not intended to diagnose, treat, cure, or prevent any disease. Speak with a qualified healthcare provider before starting any new supplement, especially if you take prescription medication or have a medical condition.
