[5][needs update] A scientific panel for the European Food Safety Authority concluded a cause-and-effect relationship could not be established between cranberry consumption and risk of UTIs.

A cup of standard (fortified) cranberry juice, amounting to 248 grams or 8 ounces, provides 107 calories and contains vitamin C as an ingredient to preserve freshness, with other micronutrients that may be added during manufacturing.

"[5] The European Food Safety Authority reviewed the evidence and concluded a cause and effect relationship has not been established between the consumption of cranberry products and reducing the risk of UTIs.

[10] When the quality of meta-analyses on the efficacy of cranberry products for preventing or treating UTIs was examined, large variation was evident, resulting from inconsistencies in clinical research methods.

These types of health claims also do not need to "meet the significant scientific agreement standard" and must be accompanied by a disclaimer stating that there is insufficient evidence of the product affecting a disease, such as UTI.

[18] Currently, the main cranberry farming Canadian provinces are British Columbia, Québec, New Brunswick, Nova Scotia and Prince Edward Island.

[18] However, the lower temperatures present in the Eastern provinces require the use of irrigation and flooding to prevent frost damage and moisture loss.

[20] A paddled machine called a water reel harvester is used to separate the ripe cranberries from the vines, then collected through a large suction pipe and transported by truck to a processing plant.

[23] The prepared cranberry juice product is heat treated by high temperature-short time (HTST) or ultra-high temperature (UHT) techniques and packaged into aseptic, hermetically sealed containers.

HHP treatment involves applying pressure (80,000 psi or 550 MPa) to cranberry juice for 1 to 9 minutes to eliminate any harmful bacteria, moulds and viruses.

[30] The tartness of cranberry juice derives from its mixed content of polyphenols, including flavonoids, proanthocyanidins, anthocyanins, phenolic acids, and ellagitannins.

[31] All cranberry juice products are required to be packed in aseptic, hermetically sealed containers (plastic bottles, cans, cartons) in accordance with good manufacturing practices of their country.

[36] An example of the label claim provided by the FDA was: "Consuming one serving (8 oz) each day of a cranberry juice beverage may help reduce the risk of recurrent urinary tract infection (UTI) in healthy women.

[38][39] Additionally, each cranberry juice product should be fortified with vitamin C, with each serving size delivering not less than 100% of the current US Reference Daily Intake.

1 grade are required to be fairly clean; be uniform in size; and free from any damage and/or defect that affects the appearance, edibility, or shipment quality.

[43] The cranberries of Canada Domestic grade are required to be reasonably clean; and be free from any damage and/or defect that seriously affects the appearance, edibility, or shipment quality.

[47] Cranberries and juice concentrate exported from the United States were the objects of imposed tariffs during trade wars with the European Union, China, Mexico, and Canada over the period 2017–19.