Natural remedies for bladder & urinary
Direct answer
Cranberry is the best-supported option for preventing recurrent urinary tract infections, rated Moderate (3), but it is not advised with warfarin. The caution that matters most is that urinary symptoms need checking, not just treating: see a doctor if you have a fever, blood in your urine, or symptoms and you are a man, pregnant, or keep getting infections.
D-mannose is rated Limited (2) because the largest UK trial found no benefit over placebo. The only other Moderate (3) here is prescription potassium citrate for preventing recurrent calcium kidney stones, and that result does not apply to citric acid powder or lemon juice.
Nothing herbal here is shown to treat an infection you already have: nettle root for prostate-related urinary symptoms and bearberry for mild cystitis are both rated 2, and the best bearberry trials were negative.
Compare the options
Of the 7 remedies for bladder & urinary we have rated, 2 have Moderate or Strong evidence for this use (none Strong). See our evidence report.
Click a column heading to sort.
| Rated for | Typical form & use | Main caution | |||
|---|---|---|---|---|---|
| Citric acid Organic acid (fermentation or citrus) | Moderate | Preventing recurrent kidney stones (as potassium citrate) | Potassium citrate (Rx), not citric acid | Lemon juice or citric acid powder untested; see a doctor | 4+ weeks |
| Cranberry Vaccinium macrocarpon (fruit) | Moderate | Preventing recurrent UTIs in women | Juice or PAC-standardised capsule, daily | UK advice: avoid if taking warfarin | 4+ weeks |
| Bearberry (uva ursi) Arctostaphylos uva-ursi (leaf) | Limited | Symptoms of uncomplicated cystitis | Leaf extract, 200–840 mg arbutin daily | Max one week; not in pregnancy, kidney disease, under 18 | 2–3 days |
| D-mannose D-mannose (a simple sugar) | Limited | Preventing recurrent UTIs in women | Powder, 2 g daily | Not a treatment for an active infection | 4+ weeks |
| Horsetail Equisetum arvense (aerial parts) | Limited | Urinary flushing (mild diuretic) | Dry aqueous extract, about 900 mg/day | Not with fluid restriction (heart or kidney disease) | 2–3 days |
| Nettle Urtica dioica (root and leaf) | Limited | Prostate urinary symptoms (root) | Root extract, about 300–720 mg a day | See a doctor for urinary symptoms before self-treating | 4+ weeks |
| Saw palmetto Serenoa repens (fruit) | Limited | Enlarged prostate urinary symptoms | Fruit extract, 320 mg daily | Have urinary symptoms checked by a doctor before using it | 4+ weeks |
- Rated for
- Preventing recurrent kidney stones (as potassium citrate)
- Form
- Potassium citrate (Rx), not citric acid
- Onset
- 4+ weeks
- Rated for
- Preventing recurrent UTIs in women
- Form
- Juice or PAC-standardised capsule, daily
- Onset
- 4+ weeks
- Rated for
- Symptoms of uncomplicated cystitis
- Form
- Leaf extract, 200–840 mg arbutin daily
- Onset
- 2–3 days
- Rated for
- Preventing recurrent UTIs in women
- Form
- Powder, 2 g daily
- Onset
- 4+ weeks
- Rated for
- Urinary flushing (mild diuretic)
- Form
- Dry aqueous extract, about 900 mg/day
- Onset
- 2–3 days
- Rated for
- Prostate urinary symptoms (root)
- Form
- Root extract, about 300–720 mg a day
- Onset
- 4+ weeks
- Rated for
- Enlarged prostate urinary symptoms
- Form
- Fruit extract, 320 mg daily
- Onset
- 4+ weeks
Quick picks
Cranberry is rated Moderate (3) for preventing recurrent UTIs in women: the 2023 Cochrane review of 8 trials in 1,555 women found fewer infections (risk ratio 0.74, 95% CI 0.55 to 0.99), though the trials were inconsistent. It aims to cut future infections, not treat one you have, and the NHS and MHRA advise avoiding it with warfarin.
Traditional favouriteBearberry (uva ursi)Bearberry leaf is registered in the EU only as a traditional medicine for mild cystitis symptoms in women. In 382 women it made no difference to symptoms versus placebo, and in another trial it left women with more symptoms than a single antibiotic dose. Use for one week at most.
Key facts about bladder & urinary
- About half of all women will get a bladder infection in their lifetime, and about a quarter of those will have repeat infections. Men under 50 rarely get them.9
- Worldwide there were about 404.6 million urinary tract infections and 236,790 deaths from them in 2019. Women get UTIs about 3.6 times as often as men.10
- In the placebo groups of three trials in women with uncomplicated UTIs, up to 42% were symptom-free or better within 9 days without antibiotics, but up to 39% had not improved by 6 weeks.11
- In the UK, women aged 16 to 64 who are not pregnant or breastfeeding can usually get help for a UTI from a pharmacist. Men, over-65s, pregnant women and anyone with blood in their urine should get an urgent GP appointment or call 111.6
- Pain in the lower tummy or in the back just under the ribs, or blood in your pee, can be signs of a kidney infection, which can cause sepsis if it is not treated.6
- An enlarged prostate affects 5% to 6% of US men aged 40 to 64 and 29% to 33% of those 65 and older. It is the most common prostate problem in men over 50.12
- About 11% of men and 6% of women in the US have a kidney stone at least once in their lifetime, and having one makes another more likely.13
Talk to a doctor first if…
Who should avoid
- Fever, back or side pain, blood in the urine or worsening symptoms: see a doctor rather than self-treat.
- Cranberry: should not be taken with warfarin. It has shown no UTI benefit in pregnancy, and does not treat an active infection.
- Bearberry: not for pregnancy or breastfeeding, kidney disorders, anyone under 18, men without medical supervision, or use for longer than one week.
- D-mannose: untested in pregnancy and breastfeeding, and the sources we read covered adults only.
- Kidney stones: ask a doctor before self-treating with citrate or lemon juice, and do not treat stone pain with citric acid powder (unproven).
- Acidic drinks: avoid frequent sips, especially at bedtime (enamel erosion).
- Horsetail and nettle leaf: do not use where fluid intake has to be limited.
Known interactions
- Cranberry with warfarin is the one that matters: the MHRA and NHS advise people on warfarin to avoid cranberry products because of case reports of raised INR or bleeding.
- Cranberry with warfarin, continued: two small controlled trials found no effect on warfarin levels, so ask your anticoagulant clinic.
- Horsetail with HIV antiretroviral medicines: two case reports of viral rebound, and the authors advise avoiding the combination, though it is unproven.
- D-mannose, bearberry, nettle and citric acid: no interactions we could source, which is not the same as none existing.
Before you reach for an ingredient
For a suspected bladder infection or an enlarged prostate, the NHS route comes first, and fluids and everyday habits are the main self-care measures; cranberry and D-mannose are for preventing recurrences, not for treating one.
- For a suspected UTI, the NHS advises paracetamol for pain, resting, and drinking enough that you pass pale urine regularly, and avoiding fruit juices, coffee and alcohol, which may irritate the bladder. Many UTIs need antibiotics; a pharmacist can help women aged 16 to 64 who are not pregnant.6
- To help prevent UTIs, the NHS suggests wiping front to back, peeing soon after sex, not holding urine in, emptying the bladder fully, wearing cotton underwear and avoiding scented soap around the genitals.6
- For an enlarged prostate, the NHS says doctors usually recommend lifestyle changes first if symptoms are mild, and that a GP should check the symptoms because they can sometimes be caused by more serious conditions such as prostate cancer.7
Questions people ask
Does cranberry prevent UTIs?
In women with recurrent UTIs the 2023 Cochrane review found fewer infections (risk ratio 0.74), but the trials disagreed and the products varied. It found little or no benefit in older people in care, in pregnancy or with bladder-emptying problems, and no trials showing cranberry treats an infection you already have.
Does D-mannose work for UTIs?
Probably not to a degree you would notice. In the largest placebo-controlled trial, of 598 women in UK primary care, 51.0% on D-mannose and 55.7% on placebo saw a doctor or nurse for a suspected UTI over 6 months. Older, smaller studies looked more positive, but Cochrane rates that evidence as very low certainty.
When should I see a doctor for urinary symptoms?
The NHS advises an urgent GP appointment or 111 if you have a very high or low temperature or are shivering, blood in your urine, pain in the lower tummy or back, or are a man, pregnant, aged 65 or over or have diabetes. Also go if symptoms do not improve within 48 hours, or if you get 2 UTIs in 6 months or 3 in 12.
Does citric acid or lemon juice help kidney stones?
Only the prescription salt potassium citrate has been shown to, and only for preventing recurrent calcium stones: a Cochrane review of 7 trials (477 people) found fewer new stones (risk ratio 0.26, 95% CI 0.10 to 0.68), though the trials were small and more people stopped because of side effects, mostly an upset stomach.
Those results do not apply to citric acid powder or lemon juice, which were not tested, and acidic drinks can erode tooth enamel. See a doctor for stone symptoms rather than self-treating.
Sources (13)
- Systematic review Williams G, Stothart CI, Hahn D, Stephens JH, Craig JC, Hodson EM. Cranberries for preventing urinary tract infections. Cochrane Database Syst Rev. 2023.
- Randomised controlled trial Hayward G, Mort S, Hay AD, et al. d-Mannose for Prevention of Recurrent Urinary Tract Infection Among Women: A Randomized Clinical Trial. JAMA Intern Med. 2024.
- Systematic review Cooper TE, Teng C, Howell M, Teixeira-Pinto A, Jaure A, Wong G. D-mannose for preventing and treating urinary tract infections. Cochrane Database Syst Rev. 2022.
- RCT Moore M, Trill J, Simpson C, et al. Uva-ursi extract and ibuprofen as alternative treatments for uncomplicated urinary tract infection in women (ATAFUTI): a factorial randomized trial. Clin Microbiol Infect. 2019.
- RCT Gágyor I, Hummers E, Schmiemann G, et al. Herbal treatment with uva ursi extract versus fosfomycin in women with uncomplicated urinary tract infection in primary care: a randomized controlled trial. Clin Microbiol Infect. 2021.
- Clinical guidance NHS. Urinary tract infections (UTIs). nhs.uk (last reviewed 11 July 2025).
- Clinical guidance NHS. Enlarged prostate. nhs.uk.
- Cochrane review Phillips R, Hanchanale VS, Myatt A, et al. Citrate salts for preventing and treating calcium containing kidney stones in adults. Cochrane Database Syst Rev. 2015.
- Regulator/health agency NIDDK. Definition & Facts of Bladder Infection in Adults. National Institute of Diabetes and Digestive and Kidney Diseases (last reviewed April 2024).
- Burden study Yang X, Chen H, Zheng Y, Qu S, Wang H, Yi F. Disease burden and long-term trends of urinary tract infections: A worldwide report. Front Public Health. 2022.
- Systematic review Hoffmann T, Peiris R, Mar CD, Cleo G, Glasziou P. Natural history of uncomplicated urinary tract infection without antibiotics: a systematic review. Br J Gen Pract. 2020.
- Regulator/health agency NIDDK. Enlarged Prostate (Benign Prostatic Hyperplasia). National Institute of Diabetes and Digestive and Kidney Diseases (last reviewed June 2024).
- Regulator/health agency NIDDK. Definition & Facts for Kidney Stones. National Institute of Diabetes and Digestive and Kidney Diseases (last reviewed May 2017).
Reviewed by Healthy and Herbal editors · 10 October 2026 · Next review April 2027
Reader notes
Experiences and questions from readers, read by an editor before they appear. They are personal accounts, not evidence, and are not medical advice.