Educational reference only · Not medical advice · Always consult a qualified healthcare professional
Stevia

Stevia rebaudiana

Stevia

Asteraceae

Evidence: LimitedCaffeine Free South AmericaBlood Sugar TraditionsSweeteningAntioxidant Traditions
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Identity

Common Name
Stevia
Scientific Name
Stevia rebaudiana
Botanical Family
Asteraceae
Native Region
South America (Paraguay, Brazil)
Cultivation Regions
South America, Asia, tropics
Plant Parts Used
Leaves
Synonyms
Sweet Leaf, Sugar Leaf, Caa-Ehe
Caffeine Level
Caffeine Free

A tender perennial with small opposite lanceolate green serrated leaves and loose clusters of tiny white tubular flowers; the leaves are used.

Historical Background

Stevia has been a Guarani (South American) sweet leaf for centuries, used to sweeten mate and other drinks long before modern stevia sweeteners. Its leaves brew a clean, naturally sweet, caffeine-free cup and double as a zero-calorie sweetener for other herbal teas.

Earliest recorded uses: Guarani traditions for centuries; a sweet leaf used to sweeten teas and drinks.

Traditional preparations:

  • Leaf infusion
  • Sweet tea base
  • Zero-calorie sweetener

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

South American Indigenous Traditions

Guarani sweet leaf to sweeten mate and teas.

Modern Herbalism

Naturally sweet, blood-sugar-friendly cup.

Flavor & Aroma

SweetCleanSlightly GreenLicorice-like

Aroma: Sweet, clean, slightly green, licorice-like

Tea Information

Suitable for Tea
Yes
Preparation Methods
Infusion, Sweetener leaf steep
Steeping Temperature
200 F (93 C)
Steeping Time
3-5 minutes
Recommended Vessel
Teapot
Blends Well With
Mint, Green Tea, Hibiscus, Lemon Balm, Rooibos
200 F (93 C) 3-5 minutes

Safety & Cautions

Contraindications
Generally very safe in food/tea amounts; may lower blood sugar - caution with antidiabetic drugs; may lower blood pressure - caution with antihypertensives; avoid medicinal doses in pregnancy; discontinue before surgery.
Drug Interactions
May lower blood sugar and blood pressure - caution with antidiabetic and antihypertensive drugs; consult a clinician.
Pregnancy
Generally regarded as safe in food amounts; avoid medicinal doses.
Breastfeeding
Generally regarded as safe in food amounts.
Children
Very gentle; widely enjoyed as a sweetener.
Allergies
Possible in those sensitive to Asteraceae; may cross-react with ragweed/daisy.
Known Adverse Effects
Generally very well tolerated; high doses may cause GI upset, bloating, or mild nausea; very sweet - may cause sugar craving; rare allergic reactions (Asteraceae).

Research Summary

Evidence Level: Limited

Stevia has a tradition as a sweet, blood-sugar-friendly leaf and tea; steviol glycosides are approved sweeteners with modest glucose-modulating data. Clinical evidence for tea is limited; it is not a treatment for diabetes, hypertension, obesity, or any disease, though it remains a gentle, naturally sweet, caffeine-free cup.

Evidence levels reflect the currently available scientific literature and may change as new research emerges. Where evidence is limited or conflicting, this is stated plainly.

References & Sources

References & Sources

  1. EMA HMPC · Steviol glycosides assessment (2015)
  2. PubMed · Stevia rebaudiana review (2019)

Related Herbs

Soothing Brews

An educational encyclopedia preserving the history, traditions, and modern evidence behind herbs used in teas and infusions. Inspired by antique botanical manuscripts.

Steeped in tradition, grounded in honesty.

Please Note

This is an educational reference, not a medical resource. Historical use does not imply effectiveness. Natural does not always mean safe. Consult a qualified healthcare professional before using herbs, especially if pregnant, nursing, or taking medications.

© 2026 Soothing Brews · For educational purposes only.

Preferred sources: NIH ODS · NCCIH · MSK Herbs · PubMed · WHO · EMA · German Commission E · Cochrane