Loud gurgling gas after ice cream

You finish a bowl of ice cream. An hour or two later, your belly starts to rumble. The noise can be loud enough for other people to hear.

Milk sugar is called lactose. Your gut uses a tool called lactase to break it down. If you make very little lactase, that sugar moves on into your lower gut.

The bugs that live down there feed on it. They give off gas as they go. That gas is what you hear and feel, along with bloating and wind.

When to see someone

See a doctor if you lose weight without trying, or if you see blood in your stool. Fever, hard belly pain, or loose stools that last more than a few days also need a check. Get seen too if this gas is new and your bowel habits have changed.

Below is a list of home and folk remedies people use for lactose intolerance. Each one has a grade for how much research stands behind it. A high grade means more study, not a promise of what it will do for you.

Lactose Intolerance: natural remedies and the evidence behind them

10 options · 1 graded A · 9 traditional or ungraded

What's your game plan with dairy right now?

I want to retrain my gut so dairy bothers me less over time

Probiotics
Supported by controlled trials· Recognised traditional use (Evidence grade A · Traditional use recognised)Recognised traditional use
Probiotics can ease lactose-intolerance symptoms
Why this matches
You'd like to build steadier tolerance to dairy over time. Taken daily, probiotics can shift the balance of gut bacteria that help ferment lactose, and pooled trial data show they ease the abdominal pain, gas and diarrhea of lactose intolerance rather than just masking symptoms in the moment.
Why try it
A 2023 meta-analysis of twelve studies found that regular probiotic use reduced lactose-intolerance symptoms such as abdominal pain, flatulence and diarrhea, with single-strain products among the most effective. Benefits build gradually with daily use and vary from person to person and strain to strain, so it can take some trial and error to find one that suits you.
Dose or use
Take a daily probiotic as directed on the label, ideally consistently for several weeks; single-strain products performed best in trials.
Time to results
Often a few weeks of daily use
Key study
Meta-analysis (2023, PMID 37225575): Effects of probiotics administration on lactose intolerance in adulthood. Pooling twelve studies, probiotic supplementation significantly reduced lactose-intolerance symptoms including abdominal pain, diarrhea and flatulence; single-strain products were among the most effective, though effect sizes varied by strain and dose.
Caution
Generally well tolerated. If you are immunocompromised, on immunosuppressant medication, or have a serious underlying illness, talk to your doctor before starting probiotics.
Probiotics (Lactobacillus plantarum P8)
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Probiotic that may support gut balance
Why this matches
If you'd like to build steadier dairy tolerance over time, a well-studied gut probiotic like this may help by encouraging a healthier, more balanced gut environment rather than working around symptoms in the moment.
Why try it
Lactobacillus plantarum P8 is a widely studied gut probiotic. It has not been tested specifically for lactose intolerance in controlled trials, but by supporting a healthier gut environment it may gradually ease general digestive discomfort.
Dose or use
Follow product labeling; consult a healthcare practitioner.
Time to results
Often several weeks of daily use
Key study
Traditionally used to support gut health; this specific use for lactose intolerance has not been confirmed in controlled clinical trials.
Caution
If you are immunocompromised or on immunosuppressant medications, talk to your doctor before starting probiotics.
Probiotic Supplement (Lactobacillus acidophilus LA14)
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Studied probiotic for gut and digestion
Why this matches
Since you want to build tolerance over time, this is a second gut-focused option — L. acidophilus is one of the most studied probiotic strains for everyday digestive comfort.
Why try it
Lactobacillus acidophilus LA-14 has been studied for reducing bloating, gas and abdominal discomfort in general digestive conditions like IBS. It is not proven specifically for lactose intolerance, but as a gut probiotic it may help support a more comfortable digestive environment.
Dose or use
Follow product labeling; take daily and consult a healthcare practitioner.
Time to results
Often several weeks of daily use
Key study
Studied for general digestive comfort; not tied to a specific lactose-intolerance trial in this library.
Caution
If you are immunocompromised or on immunosuppressant medications, talk to your doctor before starting probiotics.

I'd rather skip dairy altogether — and make sure my bones and nutrition don't pay for it

Calcium Deficiency
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Dairy is a top calcium source to replace
Why this matches
Since you're cutting back on dairy, it's worth flagging calcium: dairy is most people's biggest dietary source, and going without it can quietly leave you short.
Why try it
Calcium is essential for bone strength, and dairy is the leading dietary source. People who limit or avoid dairy are at real risk of falling short over time, so it's worth keeping an eye on your intake and covering the gap.
Dose or use
Include non-dairy calcium sources such as leafy greens, fortified plant milks, tofu and canned fish with bones, or a supplement if your diet falls short.
Time to results
A nutrition concern to monitor over months, not a quick fix
Key study
Surfaced as a nutritional risk for people avoiding dairy, not a treatment; based on dairy's role as a primary dietary calcium source.
Caution
Very high supplemental calcium can cause its own problems; aim to meet needs through food first and discuss supplements with your doctor.
Dairy-Free / Casein-Free Diet
Centuries of traditional use across more than one tradition· Human evidence not yet assessed (Evidence grade not assigned · Traditional use classical)Classical use across multiple traditions
Remove the trigger to avoid symptoms
Why this matches
You'd rather go dairy-free than work around symptoms. Removing or substituting dairy is the most reliable way to keep lactose reactions from happening at all.
Why try it
Avoiding lactose removes the trigger entirely, so there is nothing to react to. It is a core, widely used way to manage lactose intolerance, and plant-based milks, cheeses and yogurts make it easier than ever to keep meals varied.
Dose or use
Swap dairy for lactose-free or plant-based alternatives and read labels for hidden milk and casein.
Time to results
Symptoms typically settle within days
Key study
Dietary avoidance is a standard management approach; offered as a lifestyle strategy rather than a clinically graded treatment.
Caution
Cutting dairy removes a major source of calcium and vitamin D — plan alternatives or supplements so your bone and nutrient health don't slip.
Vitamin D Deficiency
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Cutting dairy can lower your vitamin D
Why this matches
As you move away from dairy, vitamin D is worth watching too — fortified milk is a primary source, and it's the nutrient your body needs to actually absorb calcium.
Why try it
Dairy is a major source of fortified vitamin D, so avoiding it can raise your risk of falling short. Vitamin D is also needed to absorb the calcium you're already under-consuming, so the two go hand in hand for protecting your bones.
Dose or use
Get vitamin D from sunlight, fortified foods, fatty fish or a supplement; ask your doctor about testing your level.
Time to results
A nutrition concern to monitor over months, not a quick fix
Key study
Surfaced as a nutritional risk for people avoiding dairy, not a treatment; based on fortified dairy's role as a primary vitamin D source.
Caution
Vitamin D is fat-soluble and can build up if over-supplemented; follow labeled doses and check with your doctor before taking high amounts.

I'm not giving up cheese and ice cream — help me digest dairy when I eat it

Lactase Enzyme
Centuries of traditional use across more than one tradition· Human evidence not yet assessed (Evidence grade not assigned · Traditional use classical)Classical use across multiple traditions
Supplies the enzyme you're missing
Why this matches
You want to still enjoy dairy without the fallout. Lactase supplements aim to do just that: taken right before dairy, they supply the enzyme your body is short on, which can help the lactose get digested.
Why try it
Lactase is the enzyme that breaks lactose down. Taking it with dairy addresses the enzyme shortfall directly rather than working around it, which is why it is such a common first choice for people who want to keep eating dairy. How well it works can vary with the dose and the amount of dairy in the meal.
Dose or use
Take with your first bite of dairy, matching the dose to how much dairy is in the meal per the product's instructions.
Time to results
If it helps, effects are felt within the same meal
Key study
Widely used to digest lactose when taken with dairy; this library entry is not tied to a specific clinical trial here.
Caution
Effectiveness depends on dose and the amount of dairy; very high-lactose meals may still cause symptoms. Not a substitute for medical advice if symptoms are severe.
Digestive Enzyme Complex
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Broad enzyme blend that may include lactase
Why this matches
If you'd like broader support for digesting dairy and mixed meals, a full enzyme blend can help — many include lactase alongside enzymes for fats and proteins.
Why try it
Broad-spectrum digestive enzyme blends commonly contain lactase and other enzymes, which may ease the bloating and gas that come from undigested food. It is used as a general mealtime digestive aid rather than a proven lactose-specific treatment.
Dose or use
Take with meals as directed on the label.
Time to results
Works within the same meal
Key study
Traditionally used as a mealtime digestive aid; not tied to a specific lactose-intolerance trial in this library.
Caution
Check the label to confirm it actually contains lactase — blends vary. If symptoms persist, a dedicated lactase product may work better.

The bloating and gas have already hit — I need something to calm my belly right now

ST25 (Tianshu) - Stomach 25
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Abdominal point for bloating and gas
Why this matches
When bloating and gas hit after dairy, you want something to reach for in the moment. ST25 sits right on the belly and is traditionally used for exactly this kind of digestive upset.
Why try it
ST25 (Tianshu) is an acupressure point beside the navel used in Traditional Chinese Medicine to ease bloating, gas, cramps and irregular bowel movements. It's a simple, drug-free self-care tool for calming symptoms as they come on.
Dose or use
Press gently about two finger-widths either side of the navel with slow circular motions for 1–2 minutes when symptoms flare.
Time to results
May bring relief within minutes
Key study
Traditional acupressure point for digestive discomfort; not evaluated in controlled lactose-intolerance trials.
Caution
Avoid firm abdominal pressure if pregnant or if you have abdominal pain of unknown cause; see a doctor for severe or persistent symptoms.
REN12 (Zhongwan)
Centuries of traditional use· Human evidence not yet assessed (Evidence grade not assigned · Traditional use long-standing)Long-standing traditional staple
Belly point for bloating and indigestion
Why this matches
If you'd like another in-the-moment option for post-dairy discomfort, REN12 is a central belly point long used to settle bloating and indigestion.
Why try it
REN12 (Zhongwan) sits on the midline of the abdomen and is used in Traditional Chinese Medicine to relieve bloating, indigestion and stomach discomfort. It pairs well with ST25 as a simple, drug-free way to ease symptoms.
Dose or use
Press gently on the midline about halfway between the navel and the base of the breastbone with slow circles for 1–2 minutes.
Time to results
May bring relief within minutes
Key study
Traditional acupressure point for digestive discomfort; not evaluated in controlled lactose-intolerance trials.
Caution
Avoid firm abdominal pressure if pregnant or if you have unexplained abdominal pain; see a doctor for severe or persistent symptoms.

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