Dull pain in one side of back

The ache sits in one spot, on one side of your back. It may be low, or just under the ribs. It feels deep and dull, not sharp.

Many things cause a one-sided backache. A pulled muscle is common, and so is sleeping in an odd position. Muscle aches often shift when you move, stretch, or press the spot.

You have a kidney high on each side of your back. When one is infected, the ache can stay steady no matter how you sit. You may also run a fever, need to pee often, or feel sick to your stomach.

When to see someone

See a doctor today if you also have fever, chills, or shaking. Burning pee, blood in your pee, or cloudy smelly pee needs a check too. Get urgent care for vomiting, feeling faint, confusion, or pain that gets worse fast.

Below are folk and home remedies people have linked to kidney infection. Each one has a grade that shows how strong the research behind it is. A grade is not a promise of help, so talk with your doctor first.

Kidney Infection: natural remedies and the evidence behind them

8 options · 2 graded C · 6 traditional or ungraded

Where are you in your kidney infection journey right now?

I'm on (or just finished) antibiotics and want to help my body bounce back

  1. Lactobacillus Acidophilus

    Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)

    Supports urinary tract health during recovery

    Why this matches
    While recovering, restoring healthy bacterial balance — especially if you're on antibiotics — is where this probiotic strain may fit; note that its main supporting trial studied urinary tract infection in postpartum women, not kidney infection.
    Why try it
    Lactobacillus acidophilus may help maintain a healthy microbiome in the urogenital tract, which can be disrupted during infection and antibiotic treatment.
    Dose or use
    Follow product labeling; consult a healthcare practitioner for strain-specific dosing.
    Time to results
    Typically 2–6 weeks
    Key study
    RCT (2026, PMID 40864416): The Effect of Lactobacillus Acidophilus (La5) on the Incidence of Urinary Tract Infection in the Puerperium: A Randomized Placebo-Controlled Trial.
    Caution
    Consult your doctor before use if immunocompromised; take a few hours apart from antibiotics when used together.

  2. Probiotics (Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri)

    Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use

    Urogenital probiotic pair to help restore flora

    Why this matches
    As you recover — especially on a course of antibiotics that can disturb your natural balance — this well-studied urogenital probiotic pair fits alongside the acidophilus already here to help your flora bounce back.
    Why try it
    The GR-1 and reuteri strains are used to help re-establish healthy bacteria in the urogenital tract, producing substances that support a balanced microbiome after infection and antibiotic treatment.
    Dose or use
    Follow product labeling; take a few hours apart from antibiotics when used together.
    Time to results
    Typically 2-6 weeks of consistent use
    Key study
    This GR-1/reuteri combination has been studied in randomized trials for female urogenital and vaginal flora health; it has not been tested as a treatment for kidney infection. Used here as supportive care to help restore flora during antibiotic recovery.
    Caution
    Supports flora balance during recovery; it does not treat an active kidney infection. Check with your doctor first if you are immunocompromised.

They keep coming back — I want to stop the next one before it starts

  1. D-Mannose

    Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)

    Studied for preventing recurrent UTIs

    Why this matches
    If recurrent infections are your concern, D-mannose has been studied for UTI prevention in a systematic review and meta-analysis of randomized controlled trials — though that evidence is for urinary tract infections in general, not kidney infection specifically.
    Why try it
    D-mannose is thought to make it harder for bacteria to stick to the urinary tract lining, which may help reduce the chance of repeat infections.
    Dose or use
    Typically 2 g daily for prevention; follow product labeling or consult a healthcare practitioner for your situation.
    Time to results
    Typically assessed over 4–12 weeks of consistent use
    Key study
    Systematic review (2025, PMID 41004704): Efficacy of D-mannose as prophylaxis of recurrent urinary tract infection: a systematic review and meta-analysis of randomized controlled trials.
    Caution
    Consult your doctor if you have diabetes or kidney disease; D-mannose does not replace antibiotics for an active infection.

  2. Cranberry extract

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Popular anti-adhesion support for urinary health

    Why this matches
    If infections keep coming back, cranberry is one of the most familiar options people reach for to support urinary-tract health between episodes — a natural companion to D-mannose for the 'break the cycle' goal.
    Why try it
    Cranberry contains compounds thought to make it harder for bacteria like E. coli to stick to the urinary-tract lining, which is why it is widely used for prevention rather than treatment.
    Dose or use
    Follow product labeling; often taken daily as a capsule, tablet, or juice for ongoing prevention.
    Time to results
    Typically assessed over weeks of consistent daily use
    Key study
    Widely used and studied for urinary-tract health, though trial results for preventing UTIs are mixed and it has not been shown to treat pyelonephritis. Presented here as a traditional preventive support, not a graded treatment for this condition.
    Caution
    Cranberry is for prevention only and will not treat an active kidney infection — antibiotics are essential. Check with your doctor if you take warfarin or are prone to kidney stones.

  3. Vitamin D Deficiency

    Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use

    Correcting low vitamin D supports immune defense

    Why this matches
    If your infections keep returning, it's worth checking whether an underlying shortfall — like low vitamin D — is leaving your defenses run down. Correcting a genuine deficiency is a safe, foundational lever for someone trying to break the cycle.
    Why try it
    Vitamin D helps your immune system work normally. Low levels have been linked with more frequent urinary infections, so restoring an adequate level supports your body's own protection.
    Dose or use
    Best guided by a blood test; supplement to correct a confirmed deficiency per your doctor's advice.
    Time to results
    Levels typically rebuild over 1-3 months of consistent supplementation
    Key study
    Low vitamin D status has been associated with recurrent urinary infections in observational research, and correcting a deficiency supports normal immune function. This is a general prevention measure, not a proven treatment for kidney infection.
    Caution
    This addresses an underlying deficiency and does not treat an active kidney infection. Don't take high doses without testing — excess vitamin D can be harmful.

I'm curious about time-tested herbal traditions to sit alongside my medical care

  1. Cranberry extract

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Popular anti-adhesion support for urinary health

    Why this matches
    If infections keep coming back, cranberry is one of the most familiar options people reach for to support urinary-tract health between episodes — a natural companion to D-mannose for the 'break the cycle' goal.
    Why try it
    Cranberry contains compounds thought to make it harder for bacteria like E. coli to stick to the urinary-tract lining, which is why it is widely used for prevention rather than treatment.
    Dose or use
    Follow product labeling; often taken daily as a capsule, tablet, or juice for ongoing prevention.
    Time to results
    Typically assessed over weeks of consistent daily use
    Key study
    Widely used and studied for urinary-tract health, though trial results for preventing UTIs are mixed and it has not been shown to treat pyelonephritis. Presented here as a traditional preventive support, not a graded treatment for this condition.
    Caution
    Cranberry is for prevention only and will not treat an active kidney infection — antibiotics are essential. Check with your doctor if you take warfarin or are prone to kidney stones.

  2. Bearberry (Uva Ursi)

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Traditional urinary antiseptic herb (arbutin)

    Why this matches
    If you're looking at traditional herbal options to sit alongside your medical care, bearberry has been used for centuries as a urinary antiseptic — a complementary choice, not a substitute for the antibiotics doing the real work.
    Why try it
    Bearberry's active compound, arbutin, is converted in the body to a substance with mild antiseptic action in the urinary tract, which is the basis for its long traditional use for urinary complaints.
    Dose or use
    Short-term use only under practitioner guidance; follow product labeling and do not use for more than about a week at a time.
    Time to results
    Not established for this use
    Key study
    Traditionally used as a urinary antiseptic for urinary-tract complaints; this specific use has not been confirmed in controlled clinical trials, and it is not a treatment for pyelonephritis. Presented as a traditional complementary herb.
    Caution
    Bearberry does not replace antibiotics for a kidney infection — medical treatment is essential. Avoid in pregnancy, breastfeeding, kidney disease, and with prolonged use (hydroquinone can be harmful).

My lower back is achy — I'd like gentle, in-the-moment comfort while my treatment works

  1. Moxibustion

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Traditional heat therapy used alongside standard care

    Why this matches
    If you're exploring complementary options while your medical treatment does the heavy lifting, moxibustion is a traditional comfort practice some people add alongside conventional care. Be clear-eyed: the one trial in this area combined it with a Chinese herbal decoction and antibiotics, so it can't show moxibustion works on its own.
    Why try it
    Moxibustion is a traditional Chinese medicine technique in which warmth from burning mugwort is applied near specific acupoints. It is used traditionally to support a sense of warmth and comfort in the lower back and abdomen; any role in a kidney infection is unproven.
    Dose or use
    Only under a qualified TCM practitioner; never self-apply heat over an actively infected, painful kidney area.
    Time to results
    Not established for this use
    Key study
    Traditionally used as a complementary comfort practice. The only trial in this area tested moxibustion in combination with a Chinese herbal decoction and antibiotics, so it cannot show any effect of moxibustion by itself; its use for kidney infection has not been confirmed in controlled clinical trials.
    Caution
    Moxibustion does not treat a kidney infection and does not replace antibiotics — prompt medical care is essential. Avoid direct heat over inflamed or numb skin, and skip if pregnant.

  2. BL23 (Shenshu) - Bladder 23

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    The TCM 'Kidney Shu' point for low-back support

    Why this matches
    If you want a gentle self-care practice alongside your treatment, BL23 — the 'Kidney Shu' point over the lower back — is the acupressure point most traditionally associated with the kidney area and lumbar comfort.
    Why try it
    In Traditional Chinese Medicine, BL23 sits beside the spine at the level of the kidneys and is used to support kidney energy and ease lower-back tension; gentle acupressure is a traditional comfort practice.
    Dose or use
    Apply light, steady fingertip pressure to the point on either side of the spine for a minute or two; keep pressure gentle over a tender area.
    Time to results
    Not established; used for in-the-moment comfort
    Key study
    A traditional acupressure point used for lower-back and urinary support in Traditional Chinese Medicine; its use has not been confirmed in controlled clinical trials and it is offered as a traditional comfort practice, not a treatment.
    Caution
    This is for comfort only and does not treat a kidney infection — antibiotics are essential. Do not press hard over an acutely painful, inflamed kidney area; seek care for worsening flank pain or fever.

What kind of support fits you best alongside your doctor's treatment?

I want to rebuild my good bacteria — especially with antibiotics in the picture

  1. Lactobacillus Acidophilus

    Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)

    Supports urinary tract health during recovery

    Why this matches
    While recovering, restoring healthy bacterial balance — especially if you're on antibiotics — is where this probiotic strain may fit; note that its main supporting trial studied urinary tract infection in postpartum women, not kidney infection.
    Why try it
    Lactobacillus acidophilus may help maintain a healthy microbiome in the urogenital tract, which can be disrupted during infection and antibiotic treatment.
    Dose or use
    Follow product labeling; consult a healthcare practitioner for strain-specific dosing.
    Time to results
    Typically 2–6 weeks
    Key study
    RCT (2026, PMID 40864416): The Effect of Lactobacillus Acidophilus (La5) on the Incidence of Urinary Tract Infection in the Puerperium: A Randomized Placebo-Controlled Trial.
    Caution
    Consult your doctor before use if immunocompromised; take a few hours apart from antibiotics when used together.

  2. Probiotics (Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri)

    Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use

    Urogenital probiotic pair to help restore flora

    Why this matches
    As you recover — especially on a course of antibiotics that can disturb your natural balance — this well-studied urogenital probiotic pair fits alongside the acidophilus already here to help your flora bounce back.
    Why try it
    The GR-1 and reuteri strains are used to help re-establish healthy bacteria in the urogenital tract, producing substances that support a balanced microbiome after infection and antibiotic treatment.
    Dose or use
    Follow product labeling; take a few hours apart from antibiotics when used together.
    Time to results
    Typically 2-6 weeks of consistent use
    Key study
    This GR-1/reuteri combination has been studied in randomized trials for female urogenital and vaginal flora health; it has not been tested as a treatment for kidney infection. Used here as supportive care to help restore flora during antibiotic recovery.
    Caution
    Supports flora balance during recovery; it does not treat an active kidney infection. Check with your doctor first if you are immunocompromised.

I'd rather take a simple daily supplement that helps guard against repeat infections

  1. D-Mannose

    Limited human trials so far· Most of the research is laboratory or animal work (Evidence grade C · No traditional record)

    Studied for preventing recurrent UTIs

    Why this matches
    If recurrent infections are your concern, D-mannose has been studied for UTI prevention in a systematic review and meta-analysis of randomized controlled trials — though that evidence is for urinary tract infections in general, not kidney infection specifically.
    Why try it
    D-mannose is thought to make it harder for bacteria to stick to the urinary tract lining, which may help reduce the chance of repeat infections.
    Dose or use
    Typically 2 g daily for prevention; follow product labeling or consult a healthcare practitioner for your situation.
    Time to results
    Typically assessed over 4–12 weeks of consistent use
    Key study
    Systematic review (2025, PMID 41004704): Efficacy of D-mannose as prophylaxis of recurrent urinary tract infection: a systematic review and meta-analysis of randomized controlled trials.
    Caution
    Consult your doctor if you have diabetes or kidney disease; D-mannose does not replace antibiotics for an active infection.

  2. Cranberry extract

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Popular anti-adhesion support for urinary health

    Why this matches
    If infections keep coming back, cranberry is one of the most familiar options people reach for to support urinary-tract health between episodes — a natural companion to D-mannose for the 'break the cycle' goal.
    Why try it
    Cranberry contains compounds thought to make it harder for bacteria like E. coli to stick to the urinary-tract lining, which is why it is widely used for prevention rather than treatment.
    Dose or use
    Follow product labeling; often taken daily as a capsule, tablet, or juice for ongoing prevention.
    Time to results
    Typically assessed over weeks of consistent daily use
    Key study
    Widely used and studied for urinary-tract health, though trial results for preventing UTIs are mixed and it has not been shown to treat pyelonephritis. Presented here as a traditional preventive support, not a graded treatment for this condition.
    Caution
    Cranberry is for prevention only and will not treat an active kidney infection — antibiotics are essential. Check with your doctor if you take warfarin or are prone to kidney stones.

  3. Vitamin D Deficiency

    Not yet assessed· We have not reviewed the literature for this one (Evidence grade not assigned · Traditional use recognised)Recognised traditional use

    Correcting low vitamin D supports immune defense

    Why this matches
    If your infections keep returning, it's worth checking whether an underlying shortfall — like low vitamin D — is leaving your defenses run down. Correcting a genuine deficiency is a safe, foundational lever for someone trying to break the cycle.
    Why try it
    Vitamin D helps your immune system work normally. Low levels have been linked with more frequent urinary infections, so restoring an adequate level supports your body's own protection.
    Dose or use
    Best guided by a blood test; supplement to correct a confirmed deficiency per your doctor's advice.
    Time to results
    Levels typically rebuild over 1-3 months of consistent supplementation
    Key study
    Low vitamin D status has been associated with recurrent urinary infections in observational research, and correcting a deficiency supports normal immune function. This is a general prevention measure, not a proven treatment for kidney infection.
    Caution
    This addresses an underlying deficiency and does not treat an active kidney infection. Don't take high doses without testing — excess vitamin D can be harmful.

I prefer hands-on practices — gentle acupressure or warming therapies for my back

  1. Moxibustion

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Traditional heat therapy used alongside standard care

    Why this matches
    If you're exploring complementary options while your medical treatment does the heavy lifting, moxibustion is a traditional comfort practice some people add alongside conventional care. Be clear-eyed: the one trial in this area combined it with a Chinese herbal decoction and antibiotics, so it can't show moxibustion works on its own.
    Why try it
    Moxibustion is a traditional Chinese medicine technique in which warmth from burning mugwort is applied near specific acupoints. It is used traditionally to support a sense of warmth and comfort in the lower back and abdomen; any role in a kidney infection is unproven.
    Dose or use
    Only under a qualified TCM practitioner; never self-apply heat over an actively infected, painful kidney area.
    Time to results
    Not established for this use
    Key study
    Traditionally used as a complementary comfort practice. The only trial in this area tested moxibustion in combination with a Chinese herbal decoction and antibiotics, so it cannot show any effect of moxibustion by itself; its use for kidney infection has not been confirmed in controlled clinical trials.
    Caution
    Moxibustion does not treat a kidney infection and does not replace antibiotics — prompt medical care is essential. Avoid direct heat over inflamed or numb skin, and skip if pregnant.

  2. BL23 (Shenshu) - Bladder 23

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    The TCM 'Kidney Shu' point for low-back support

    Why this matches
    If you want a gentle self-care practice alongside your treatment, BL23 — the 'Kidney Shu' point over the lower back — is the acupressure point most traditionally associated with the kidney area and lumbar comfort.
    Why try it
    In Traditional Chinese Medicine, BL23 sits beside the spine at the level of the kidneys and is used to support kidney energy and ease lower-back tension; gentle acupressure is a traditional comfort practice.
    Dose or use
    Apply light, steady fingertip pressure to the point on either side of the spine for a minute or two; keep pressure gentle over a tender area.
    Time to results
    Not established; used for in-the-moment comfort
    Key study
    A traditional acupressure point used for lower-back and urinary support in Traditional Chinese Medicine; its use has not been confirmed in controlled clinical trials and it is offered as a traditional comfort practice, not a treatment.
    Caution
    This is for comfort only and does not treat a kidney infection — antibiotics are essential. Do not press hard over an acutely painful, inflamed kidney area; seek care for worsening flank pain or fever.

I'm drawn to traditional herbs with a long history of use for urinary health

  1. Cranberry extract

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Popular anti-adhesion support for urinary health

    Why this matches
    If infections keep coming back, cranberry is one of the most familiar options people reach for to support urinary-tract health between episodes — a natural companion to D-mannose for the 'break the cycle' goal.
    Why try it
    Cranberry contains compounds thought to make it harder for bacteria like E. coli to stick to the urinary-tract lining, which is why it is widely used for prevention rather than treatment.
    Dose or use
    Follow product labeling; often taken daily as a capsule, tablet, or juice for ongoing prevention.
    Time to results
    Typically assessed over weeks of consistent daily use
    Key study
    Widely used and studied for urinary-tract health, though trial results for preventing UTIs are mixed and it has not been shown to treat pyelonephritis. Presented here as a traditional preventive support, not a graded treatment for this condition.
    Caution
    Cranberry is for prevention only and will not treat an active kidney infection — antibiotics are essential. Check with your doctor if you take warfarin or are prone to kidney stones.

  2. Bearberry (Uva Ursi)

    Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple

    Traditional urinary antiseptic herb (arbutin)

    Why this matches
    If you're looking at traditional herbal options to sit alongside your medical care, bearberry has been used for centuries as a urinary antiseptic — a complementary choice, not a substitute for the antibiotics doing the real work.
    Why try it
    Bearberry's active compound, arbutin, is converted in the body to a substance with mild antiseptic action in the urinary tract, which is the basis for its long traditional use for urinary complaints.
    Dose or use
    Short-term use only under practitioner guidance; follow product labeling and do not use for more than about a week at a time.
    Time to results
    Not established for this use
    Key study
    Traditionally used as a urinary antiseptic for urinary-tract complaints; this specific use has not been confirmed in controlled clinical trials, and it is not a treatment for pyelonephritis. Presented as a traditional complementary herb.
    Caution
    Bearberry does not replace antibiotics for a kidney infection — medical treatment is essential. Avoid in pregnancy, breastfeeding, kidney disease, and with prolonged use (hydroquinone can be harmful).

Evidence grades describe the strength of published research for Kidney Infection, not a promise of results. Nothing here is medical advice — talk to your clinician before starting anything, especially alongside prescription medication.

Other ways people describe this

Same underlying problem, different words.

These suggestions come from our full page on Kidney Infection, where you can see every option and how it is graded. Evidence grades are explained in our methodology, and every phrasing we cover is listed under health topics.

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