A summary of the peer-reviewed research behind stevia, our Ayurveda and Siddha formulation framework, and the regulatory and batch-testing standards behind every pack we ship.
| Regulatory Body | Status |
|---|---|
| US FDA | GRAS (Generally Recognised as Safe) for high-purity steviol glycosides |
| EFSA (Europe) | Approved; Acceptable Daily Intake of 4 mg/kg body weight/day |
| WHO / JECFA | Safe within established ADI of 4 mg/kg body weight/day |
| FSSAI (India) | Permitted food additive under INS 960 – Steviol Glycosides |
Natural Harmony’s Purified Stevia Extract carries FSSAI License 13626999000270 and is classified as an Ayurvedic Proprietary Medicine (APM). Every batch ships with a Certificate of Analysis.
For formulators weighing sweetener options, the profile is hard to argue with.
| Attribute | Purified Stevia | Sugar | Artificial Sweeteners |
|---|---|---|---|
| Origin | 100% plant-based — Stevia rebaudiana leaf | Sugarcane / beet | Chemically synthesised |
| Calories | Zero | 4 kcal per gram | Zero |
| Glycemic index | 0 | ~65 | 0 |
| Relative sweetness | 200–300× sugar | 1× (baseline) | Varies, 200–600× |
| Gut microbiome | No significant change in human trials | — | Some linked to microbial disruption |
| Traditional medicine | Classified as Ayurvedic Proprietary Medicine | Limited | No traditional use |
Values are typical published figures; the gut microbiome finding is summarised from the human trials referenced in the research summary below.
Drawn from our Research & Science Division’s April 2026 review of peer-reviewed literature. Presented for educational purposes — see disclaimer below.
A 2024 meta-analysis of 26 RCTs (1,439 participants) found stevia consumption associated with a statistically significant reduction in blood glucose, most pronounced in people with higher BMI, diabetes, or hypertension (Zare et al., 2024).
Human trials, including a 12-week study and a 4-week randomised trial in 59 adults, found no significant change to gut microbiome composition — distinguishing stevia from artificial sweeteners linked to microbial disruption.
Stevioside and steviol inhibit inflammatory cytokine production via the NF-κB and MAPK pathways; a 2025 systematic review of 53 in vivo studies supports stevia’s anti-inflammatory profile.
A 2-year, placebo-controlled trial of 168 hypertension patients (Hsieh et al., 2003) found stevioside reduced systolic BP by 7.8 mmHg and diastolic BP by 5.4 mmHg, with no tolerance over 2 years.
A 2025 toxicological study found an LD₅₀ greater than 5,000 mg/kg body weight in animal models, with no evidence of subchronic, genotoxic, or teratogenic effects.
Meta-analyses show substituting caloric sweeteners with stevia reduces total caloric intake without compensatory overeating — a straightforward benefit for weight management protocols.
Important
This research summary is for educational and informational purposes only and does not constitute medical, nutritional, or therapeutic advice. Natural Harmony does not make disease diagnosis, treatment, cure, or prevention claims for its commercial products. Some findings referenced (e.g. fermented stevia and pancreatic cancer cell cytotoxicity) apply only to specifically modified extracts studied in vitro, not to stevia as commonly consumed, and have not been validated in human trials. Consult a qualified healthcare professional before making dietary changes.
Our June 2026 white paper analyses 70% purified stevia extract through classical Ayurvedic and Siddha pharmacological frameworks, alongside contemporary clinical evidence, for practitioners and formulators.
| Property | Ayurvedic Classification | Clinical Implication |
|---|---|---|
| Rasa (taste) | Madhura (sweet) with subtle Tikta (bitter) | Supports Pramehaghna (anti-diabetic) action |
| Guna (quality) | Laghu (light), Ruksha (dry) | Kapha-neutral; suited to metabolic and weight management use |
| Virya (potency) | Sheeta (cooling) | Reduces Pitta-driven inflammation |
| Prabhava (special action) | Pramehaghna, Medohara | Direct anti-diabetic and lipid-modulating action |
In Ayurveda, stevia extract is studied as a Pramehaghna dravya relevant to Prameha (diabetes and urinary disorders) and Medoroga (obesity/dyslipidaemia).
In Siddha medicine, it is examined for Madhumegam (Type 2 diabetes) management, often paired with bitter herbs like neem and karela where stevia’s sweetness improves palatability without adding caloric burden.
Request our clinical and Ayurveda/Siddha white papers, or a CoA for your evaluation.
