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

Vaccinium macrocarpon

Cranberry

Ericaceae

Evidence: ModerateCaffeine Free North AmericaUrinary ComfortImmune TraditionsAntioxidant Traditions
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Identity

Common Name
Cranberry
Scientific Name
Vaccinium macrocarpon
Botanical Family
Ericaceae
Native Region
North America
Cultivation Regions
North America, Europe
Plant Parts Used
Berries, Juice, Leaves (traditional)
Synonyms
American Cranberry, Large Cranberry, Bearberry (in some regions)
Caffeine Level
Caffeine Free

A low creeping evergreen vine with small oval leaves, delicate pink nodding bell-shaped flowers, and round tart red berries. The berries are the principal medicinal and culinary part.

Historical Background

Used by Native American peoples and early settlers as food and medicine; cranberry became one of the best-studied botanicals for urinary tract support, especially as juice and extracts.

Earliest recorded uses: Urinary comfort, kidney concerns, and as a nutrient-dense food.

Cultural significance: A North American icon of autumn harvests and a modern staple of urinary-tract wellness products.

  1. Indigenous

    Native American groups use cranberry as food and medicine.

  2. Modern

    Proanthocyanidins studied for prevention of bacterial adhesion in the urinary tract.

Traditional preparations:

  • Berry infusion
  • Diluted juice
  • Leaf tea (traditional)

Traditional Uses

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

Native American Traditions

Berries and leaves used for urinary and general wellness.

Modern Herbalism

Juice, extracts, and infusions used to support urinary tract comfort.

Flavor & Aroma

TartFruityAstringentSour

Aroma: Fresh, fruity, sharp

Tea Information

Suitable for Tea
Yes
Preparation Methods
Infusion, Decoction, Cold maceration
Steeping Temperature
200°F (93°C)
Steeping Time
8-10 minutes
Recommended Vessel
Glass or ceramic teapot
Blends Well With
Rosehip, Hibiscus, Honey, Apple
200°F (93°C) 8-10 minutes

Safety & Cautions

Contraindications
Avoid excessive intake with a history of kidney stones (oxalate content of some juices); caution with warfarin.
Drug Interactions
Theoretical interaction with warfarin (cranberry may affect INR) — seek guidance if on anticoagulants.
Pregnancy
Food and tea amounts generally regarded as safe; medicinal extracts seek guidance.
Breastfeeding
Food and tea amounts generally regarded as safe.
Children
Diluted juice and tea generally well tolerated.
Allergies
Rare; possible salicylate sensitivity.
Known Adverse Effects
Generally well tolerated; high juice intake may cause gastrointestinal upset or contribute to oxalate stones in susceptible people.

Research Summary

Evidence Level: Moderate

A-type proanthocyanidins reduce bacterial adhesion to urinary tract cells; randomized trials support a preventive role for recurrent UTI, though evidence for treating an active infection is lacking.

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. NCCIH · Cranberry — for urinary tract and other conditions (various)

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