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Product Reviews (2)

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CL Answers (31)

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Clinical Updates (21)

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11/12/2019

A Chew for UTIs?

A study investigated whether a cranberry chew could inhibit infection-causing bacteria from binding to cells (which is necessary for urinary tract infections to occur) by testing participants' urine. Find out if it worked in our answer to the following question: Can cranberry juice or cranberry supplements prevent urinary tract infections (UTIs)?
12/30/2021

Comparison of D-Mannose Products – Used to prevent UTIs

We added comparisons of several brands of D-mannose to our answer to the question: Can D-mannose help prevent urinary tract infections?
5/30/2020

Cranberry for Cystitis in Men?

Cystitis (inflammation of the bladder) is common in men undergoing radiation therapy for prostate cancer. A study evaluated whether a cranberry supplement could reduce the incidence of cystitis in these men. Find out if it helped in our updated answer to the question: Are cranberry supplements helpful for men? Can they help with symptoms of prostatitis or urinary tract infections?
9/21/2019

Probiotic for the Urinary Tract?

Does taking a popular double-strain probiotic reduce the level of pathogenic microbes in the urinary tracts of women? See what a recent study found in the section about Vaginal bacterial infections of the Probiotic Supplements Review. Also see our Top Picks among probiotics.
4/10/2021

Cranberry and UTIs

Two popular cranberry supplements promoted for urinary tract health were compared in a clinical study that showed one to be 4 times as effective as the other at preventing the adhesion of UTI-causing bacteria in urine. Get the details in our article about Cranberry and UTIs.
7/27/2021

Cranberry for Men?

Can cranberry extract reduce urinary frequency, urgency, and infections in men with benign prostatic hyperplasia (BPH)? Find out in the What It Does section of our Cranberry Juices and Supplements Review. Also see our Top Picks among cranberry juices and supplements.
10/05/2021

Glycine for Urinary Frequency?

Can supplementation with the amino acid glycine improve symptoms of overactive bladder or reduce urinary frequency? See what a new study found in our updated answer to the question: Can glycine improve sleep or reduce nighttime urinary frequency?
5/27/2022

Melatonin and Urinary Frequency

Can melatonin supplementation decrease nighttime urinary frequency in older women? See what a recent study found in the Concerns and Cautions section of the Melatonin Supplements Review.

4/27/2019

Vitamin D & Incontinence

Does giving high-dose vitamin D help women who have urinary incontinence? See what a recent study found in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
12/06/2020

Cranberry for Overactive Bladder?

Can cranberry supplements help with overactive bladder? See what a new study found in our article about Cranberry and Urinary Health.
3/16/2019

Vitamin D for Overactive Bladder?

Vitamin D supplementation may help vitamin D-deficient people who suffer from urinary urgency or frequency. Get the details in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
12/15/2018

Pycnogenol for Prostate?

Pycnogenol, a branded form of pine bark extract, is promoted for a variety of uses, including improvement of circulation, cognition, joint pain and vision. It was recently given to men with benign prostatic hyperplasia (BPH) to see if it would improve urinary symptoms. Find out if it worked, and learn if it helps with other conditions, in our updated answer to the question: What is Pycnogenol and does it work? >>
4/13/2019

Does Vitamin D Improve Cancer Survival?

Does giving high-dose vitamin D to people with cancer of the colon or other parts of the digestive tract improve survival rates? Find out what recent studies are showing in the What It Does section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
9/04/2018

Glutamine for IBS?

Glutamine, an amino acid, plays a role in maintaining the digestive tract. Can taking it as a supplement help people with irritable bowel syndrome (IBS)? Find out what a recent study showed in the Glutamine section of the Muscle Enhancers Review.
10/04/2011

Saw Palmetto May Not Work

It's used by many men hoping to reduce urinary symptoms caused by benign growth of the prostate, or BPH, but a new, well-designed study suggests that it doesn't work. Some other recent research suggest the same. Even when doubling and tripling the standard dose, the high-quality saw palmetto extract used in the new study failed to provide benefit.

What should you do? You may want to consider a different supplement -- beta-sitosterol, a phytosterol. The evidence remains fairly good for beta-sitosterol. To find out more about saw palmetto, beta-sitosterol, and the supplements we have tested, see the Prostate Supplements ReviewMore >>
12/21/2021

Omicron Infection May Be Just As Severe As Delta

Data from the U.K. suggests that Omicron infections may be as severe as those from Delta, in contrast to earlier findings from South Africa.

Getting a booster dose appears to provide significant protection against symptomatic infection with Omicron.

6/17/2015

High-Dose Vitamin D Increases Upper Respiratory Infections

A study among older people found that taking a high dose of vitamin D every 2 months increased the risk of upper respiratory infection by 48% compared to taking low-dose vitamin D daily. Infections lasted two days longer for those taking the high dose versus the low dose. For details, including dosage, as well as our test reports on vitamin D supplements, see the Vitamin D Supplements Review >>
9/20/2015

Adequate Vitamin D Reduces Frequent Respiratory Infections

A study in people with frequent respiratory infections found that taking vitamin D for one year resulted in fewer infections than taking placebo. In contrast, a similar study did not find a benefit. Why the difference? Find out in the Vitamin D Supplements Review >>
5/06/2022

Omicron

Does Omicron infection protect against subsequent infections by new variants of Omicron, and do vaccines help? Find out what evidence suggests.

Recalls & Warnings (27)

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News Releases (1)

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