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Uritractin: what to look for before buying cranberry

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Written by the Nutribiolite team.

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When someone looks for a cranberry supplement for urinary wellness, the first thing they find is a long line of options that look the same. Same name, different prices, different doses. And the question that almost no one answers clearly: what differentiates one from the other?

The answer is not in the name of the fruit. It’s in the species, the concentration of its active compound, and whether the formula adds anything to enhance the effect. Without those three pieces of information, you are making a blind choice.

Why cranberry is not generic

There is a fundamental difference between the American cranberry (Vaccinium macrocarpon) and other cranberry varieties. Only Vaccinium macrocarpon contains type A proanthocyanidins (PACs), the compound that scientific studies associate with the ability to hinder the adhesion of bacteria such as Escherichia coli to the walls of the urinary tract.

Type B PACs, present in cranberries or bilberries, do not have the same activity profile. Therefore, when a product does not specify the species and type of PACs, you cannot know whether you are buying something relevant to urinary well-being or just encapsulated juice.

The second piece of information that matters is quantity. The fifth Cochrane review published in 2023 puts the range of intake studied between 36 and 72 mg daily of PACs. Many products on the market do not even reach this threshold. A few exceed it. Few say so clearly on the label.

What explains recurrent urinary discomfort

The urinary tract has cell-lined walls with receptors to which certain bacteria, especially E. coli, attach as the first step in an infection. It is not a random process. It is a biological chain that starts with adhesion and progresses if there is nothing to interrupt it.

The A-type PACs from the American cranberry act in that first step. They are widely studied for their role in hindering bacterial attachment to the walls of the urinary tract, contributing to the well-being of the urinary system. This is not a decorative effect. It is the mechanism that justifies the use of this plant in the scientific literature.

Hibiscus, for its part, provides polyphenols such as flavonoids and anthocyanins. Research has attributed antimicrobial and antifungal activity to these compounds, making hibiscus extract a supplement with a clear biological rationale in a urinary wellness formula.

When both extracts are standardised, the concentration of active compounds in each capsule is constant and verifiable. This makes a practical difference compared to products with non-standardised plant raw materials, where variability is high.

Why Uritractin fits this criterion

Uritractin is formulated with American cranberry extract (Vaccinium macrocarpon) standardised to 50% PACs, which provides 125 mg of proanthocyanidins per capsule. This clearly exceeds the range studied in the Cochrane review of 2023 and does so in a single daily capsule, with no need to split doses or remember to take extra doses.

The formula also includes hibiscus flower extract (Hibiscus sabdariffa L.) standardised to 10% polyphenols, 55 mg per capsule, equivalent to 5.5 mg of active polyphenols per capsule. It is not a filler ingredient. It is a second line of action supported by phytotherapeutic tradition and studies on its activity on the urinary tract.

Three specific aspects make the formula make sense as opposed to a generic option. First, the correct species: Vaccinium macrocarpon with type A PACs, the only ones with validated activity for urinary well-being. Second, the verified concentration: 125 mg of PACs per capsule, standardised and constant. Third, the clean formula: no synthetic additives, no colourings, no artificial preservatives, with L-leucine as a functional excipient instead of the usual synthetic fillers, and suitable for people on a vegan or vegetarian diet.

The 190-capsule pack is designed for more than six months of continuous use with one capsule daily, taken with liquid during a meal.

Uritractin – arándano rojo e hibisco para el bienestar urinario

125 mg of American cranberry PACs plus standardised hibiscus extract, all in one capsule daily with no synthetic additives.

What most people ask before they buy

Why does it matter that they are type A PACs and not type B?

Type A proanthocyanidins (PACs), found only in the American cranberry (Vaccinium macrocarpon), are the only ones that scientific studies associate with the ability to hinder the adhesion of bacteria such as E. coli to the walls of the urinary tract. Type B PACs, present in cranberries or bilberries, do not have the same activity profile validated for urinary well-being. This is why the species of the extract is not a minor detail.

Is 125 mg of PACs too much or too little compared to what has been studied?

The fifth Cochrane review of 2023 places the range of intake analysed in clinical studies between 36 and 72 mg of PACs per day. Uritractin provides 125 mg per capsule, which clearly exceeds this threshold for a single daily intake. Many cranberry supplements on the market do not specify the amount of PACs or whether the extract is standardised, making it difficult to compare with any guarantees.

What is the hibiscus used for in this formula?

Hibiscus extract (Hibiscus sabdariffa L.) provides polyphenols such as flavonoids and anthocyanins. Several studies have attributed antimicrobial and antifungal activity to these compounds. In Uritractin, the extract is standardised to 10% polyphenols, ensuring a constant concentration of 5.5 mg of active polyphenols per capsule. It is included as a complementary formula, not as a filler.

Is it suitable if I follow a vegan diet or have intolerances?

Yes, Uritractin is formulated without animal ingredients, which makes it suitable for vegans and vegetarians. It is also free from gluten, lactose, soya and other common allergens, and is made without artificial colours, preservatives or excipients. The capsule is made of hydroxypropyl methylcellulose, which is of vegetable origin.

How long does the pack last and how do I take it?

The pack contains 190 capsules, designed for more than six months of continuous use by taking one capsule a day. The pattern is simple: one capsule a day with plenty of liquid, preferably during a meal. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding or taking medication, consult a healthcare professional before starting.

This content is for informational purposes only and is not a substitute for the advice of a healthcare professional. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. If you are taking medication, have a diagnosed health condition, are pregnant or breastfeeding, consult a healthcare professional before starting any supplementation.

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