Vaccinium macrocarpon Aiton


A shrub of the Ericaceae family, it grows spontaneously in the wetlands of the northeastern United States and southeastern Canada. It is also known as cranberry (craneberry = crane berry, from which it derived cranberry) because of the similarity of its flowers, pink, with the style and stamens fully exposed and pointing forward, with the neck, head and beak of the crane. 

The branches are thin, about 10 cm or less, and the leaves are small and evergreen. The fruit, edible and sweet and sour tasting, is a berry larger than the leaves, white at first and deep red when ripe. 

Part used

Fresh or dried ripe fruit.


  • Prevention of lower urinary tract infections.
  • Prevention of recurrent urinary tract infections.
  • Prevention of urinary tract infections in more susceptible persons: menopause, diabetics, urethral catheter carriers, etc.
  • Helicobacter pylori infection.
  • Gingivitis, periodontitis.


Monografía de la SEFIT (Sociedad Española de Fitoterapia).

Manual de Fitoterapia. Encarna Castillo García e Isabel Martínez Solís. 2ª edición Elsevier.

Bailey DT, Dalton C, Joseph Daugherty F, Tempesta MS. Can a concentrated cranberry extract prevent recurrent urinary tract infections in women? A pilot study. Phytomedicine. 2007; 14 (4): 237-41.

Caljouw MA, van den Hout WB, Putter H, Achterberg WP, Cools HJ, Gussekloo J. Effectiveness of cranberry capsules to prevent urinary tract infections in vulnerable older persons: a double-blind randomized placebo-controlled trial in long-term care facilities. J Am Geriatr Soc. 2014; 62 (1): 103-10.

Di Martino P, Agniel R, David K, Templer C, Gaillard JL, Denys P, Botto H. Reduction of Escherichia coli adherence to uroepithelial bladder cells after consumption of cranberry juice: a double-blind randomized placebo-controlled cross-over trial. World J Urol. 2006; 24 (1): 21-7.

Labrecque J, Bodet C, Chandad F, Grenier D. Effects of a high-molecular-weight cranberry fraction on growth, biofilm formation and adherence of Porphyromonas gingivalis. Antimicrob Chemother 2006 Aug;58 (2): 439-43.

Rodriguez-Mateos A, Feliciano RP, Boeres A, Weber T, Dos Santos CN, Ventura MR, et al. Cranberry (poly)phenol metabolites correlate with improvements in vascular function: A double-blind, randomized, controlled, dose-response, crossover study. Mol Nutr Food Res. 2016 Oct;60(10):2130-2140.

Zhang L, Ma J, Pan K, Go VL, Chen J, You WC. Efficacy of cranberry juice on Helycobacter pylori infection: a double-blind, randomized placebo-controlled trial. Helycobacter 2005; 10 (2): 139-45.

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