Home Ingredients Cranmax® (Whole Cranberry Concentrate — Decas)
Immune SupportWomen's Health

Cranmax® (Whole Cranberry Concentrate — Decas)

Vaccinium macrocarpon
Evidence Level
Moderate
1 Clinical Trial
3 Documented Benefits
3/5 Evidence Score

Cranmax® is a whole-fruit cranberry (Vaccinium macrocarpon) concentrate from Decas Botanical Synergies, capturing the cranberry's juice, seeds, and skin. Cranberry is best known for supporting urinary tract health, largely through compounds that help keep bacteria from sticking to the bladder wall.

Studied Dose Commonly 500 mg of cranberry concentrate per day.
Active Compound Whole cranberry concentrate providing proanthocyanidins (PACs) and other cranberry polyphenols, with the bacterial anti-adhesion type-A PACs.

Benefits

Urinary tract health

Cranberry is widely used and studied for supporting urinary tract health and reducing the recurrence of urinary tract infections, a benefit recognized in reviews of non-antibiotic options.

Supported by Trial 1

Anti-adhesion action

Cranberry proanthocyanidins help stop certain bacteria from adhering to the bladder wall, the leading proposed mechanism for its urinary benefit.

Supported by Trial 1

Antioxidant polyphenols

The whole-fruit polyphenols provide antioxidant support beyond the urinary tract.

Supported by Trial 1

Mechanism of action

1

Type-A proanthocyanidins

Cranberry's distinctive type-A PACs interfere with the fimbriae that E. coli use to stick to the urinary lining, helping bacteria be flushed out.

2

Whole-fruit polyphenols

Using the whole fruit provides a broad mix of polyphenols with antioxidant activity.

Clinical trials

1
Cranberry and Urinary Tract Health — Review
PubMed

Review of non-antibiotic interventions, including cranberry, to prevent recurrent urinary tract infections. (Santer et al. 2026, British Journal of General Practice)

Adults prone to recurrent UTIs.

The review supports cranberry among non-antibiotic options for reducing recurrent urinary tract infections, consistent with its anti-adhesion mechanism.

Side effects and drug interactions

Common Potential side effects

Generally well-tolerated — cranberry is well tolerated.
Mild digestive upset is occasionally reported.
Very high intake may slightly increase the risk of kidney stones in susceptible people.

Important Drug interactions

Warfarin — cranberry may interact; monitor INR if combined.
Tell your doctor if you have a history of kidney stones.
Not a substitute for antibiotics in an active infection; see a doctor for symptoms.

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Frequently asked questions about Cranmax® (Whole Cranberry Concentrate — Decas)

What is Cranmax?

Cranmax® is a whole-fruit cranberry (Vaccinium macrocarpon) concentrate from Decas Botanical Synergies, capturing the cranberry's juice, seeds, and skin. Cranberry is best known for supporting urinary tract health, largely through compounds that help keep bacteria from sticking to the bladder wall.

What is Cranmax used for?

Cranmax is researched primarily for Immune Support and Women's Health. Cranberry is widely used and studied for supporting urinary tract health and reducing the recurrence of urinary tract infections, a benefit recognized in reviews of non-antibiotic options.

What is the recommended dosage of Cranmax?

The clinically studied dose is Commonly 500 mg of cranberry concentrate per day. Always follow the product label and check with a healthcare provider for personal advice.

Is Cranmax safe, and does it have side effects?

For most healthy adults, Cranmax is well tolerated at studied doses. Reported effects can include: Generally well-tolerated — cranberry is well tolerated. Mild digestive upset is occasionally reported. It may also interact with some medications. Cranmax is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Cranmax interact with any medications?

Possible interactions include: Warfarin — cranberry may interact; monitor INR if combined. Tell your doctor if you have a history of kidney stones. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Cranmax?

NutraSmarts rates the evidence for Cranmax as Moderate (3 out of 5). It is backed by 1 clinical trial and 1 cited reference summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(1 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Santer M, Miller S, Fraser S, et al. Non-antibiotic interventions to prevent recurrent urinary tract infections. Br J Gen Pract. 2026;(advance)..PubMedUsed to support: Review supporting cranberry for urinary tract health.