To get rid of intestinal parasites, get stool testing and take the targeted medicine matched to the species.
Gut parasites aren’t one thing—they’re a mix of worms and microscopic protozoa that need different plans. The fastest way to feel better is simple: identify the parasite, treat with the right drug, and stop reinfection at home. This guide shows what that looks like in plain steps you can follow today, with safety flags so you know when to see a doctor quickly.
How To Get Rid Of Parasites In Intestines — Doctor-Approved Steps
Here’s a practical path many clinics use for people with diarrhea, bloating, belly cramps, unexplained weight change, or an itchy bottom at night. It covers both worms and protozoa and keeps the focus on actions that actually work.
Step 1: Confirm The Species With The Right Test
Different parasites need different drugs. A stool ova-and-parasite exam looks for eggs or organisms under a microscope. Antigen tests and PCR can spot Giardia, Cryptosporidium, Entamoeba histolytica, and others when microscopy misses them. If you have rectal itching, the tape test for pinworm is done first thing in the morning before bathing.
Step 2: Use A Targeted Medicine, Not A Random “Cleanse”
Albendazole or mebendazole clear many soil-transmitted worms like roundworm and hookworm. Praziquantel treats tapeworms. Giardia responds to nitazoxanide, metronidazole, or tinidazole. Pinworm is usually treated with pyrantel pamoate, mebendazole, or albendazole, with a repeat dose in two weeks. Strongyloides needs ivermectin. The table below lists common matches and quick notes.
| Parasite | First-Line Medicine | Notes |
|---|---|---|
| Ascaris (roundworm) | Albendazole or mebendazole | Single dose regimens often used in adults. |
| Hookworm | Albendazole or mebendazole | Iron loss can occur; treat anemia if present. |
| Whipworm (Trichuris) | Mebendazole | Some cases need longer courses or combination therapy. |
| Strongyloides | Ivermectin | Extra care in people with possible Loa loa exposure. |
| Tapeworm (Taenia) | Praziquantel | Rule out cysticercosis if seizures or neurologic symptoms. |
| Dwarf tapeworm | Praziquantel | Household treatment may help stop spread. |
| Giardia | Tinidazole, metronidazole, or nitazoxanide | Hydration matters; treat household cases. |
| Pinworm | Pyrantel pamoate, mebendazole, or albendazole | Repeat dose at two weeks; wash bedding and hands. |
Step 3: Dose, Timing, And Safety Basics
Never guess doses. Follow your local label or a clinician’s plan, since age, weight, pregnancy, and other medicines change the choice. Many drugs are given with food. Some, like pyrantel pamoate, are sold over the counter in the U.S., yet a lab-confirmed match is still smarter than guessing because the wrong drug won’t touch protozoa and can miss certain worms.
Step 4: Cut Reinfection At Home
Handwashing after toilet use and before eating stops the cycle. Trim nails short. Wash underwear, pajamas, and sheets in hot water and dry on high heat for a few days. Clean bathroom surfaces often. Drink safe water, peel or cook produce, and avoid raw or undercooked meat and freshwater fish. Treat pets for worms under a vet’s guidance to reduce sharing eggs in the home.
Step 5: Know When To Seek Urgent Care
Go to urgent care or the emergency department for high fever, dehydration, heavy belly pain, persistent vomiting, blood in stool, fainting, or confusion. People who are pregnant, very young, older, on chemotherapy, on high-dose steroids, or with HIV should get prompt, individualized care for suspected parasites.
Symptoms That Point Toward Intestinal Parasites
Mild cases can be sneaky. Common patterns include watery or greasy diarrhea, gas, cramping, nausea, fatigue, and weight loss. Pinworm brings night-time rectal itching. Hookworm can cause iron-deficiency anemia. Strongyloides can lead to a recurring rash on the trunk or thighs. Tapeworm may show up as passing flat segments in the stool. None of these signs prove a parasite on their own; that’s why testing matters.
Testing Options That Clinicians Use
Most people start with stool testing. If symptoms are severe or long-running, more than one specimen on different days gives a better shot at catching the organism. Antigen or PCR panels are handy when diarrhea is ongoing and microscopy is unrevealing. When pinworm is suspected, a simple tape test done on three mornings in a row boosts the pickup rate. If there’s travel to areas with malaria risk, fever and chills call for separate testing right away.
What The Results Mean
Finding eggs, cysts, or whole organisms makes the choice straightforward. A negative test doesn’t always end the search; some parasites shed in bursts. In that case, repeat tests or targeted antigen/PCR can settle the question. When tapeworm is found, species matters. If pork tapeworm is possible, new headaches, seizures, or visual changes demand urgent evaluation to rule out cysticercosis in the brain or eye.
| Test | What It Detects | When It’s Useful |
|---|---|---|
| Ova & Parasite (microscopy) | Eggs, larvae, trophozoites | Broad screen for many worms and protozoa |
| Antigen assay | Giardia, Cryptosporidium, E. histolytica | Better sensitivity than microscopy for select bugs |
| PCR panel | Parasite DNA | High sensitivity; helps when prior tests were negative |
| Tape test | Pinworm eggs on perianal skin | Itchy bottom at night; best on waking before bathing |
| CBC with iron studies | Anemia pattern | Suggests hookworm in the right clinical setting |
| Eosinophil count | Allergic-type white cells | Can rise with tissue-migrating worms |
| Imaging | Cysts or complications | Needed if cysticercosis is suspected |
Drug Options At A Glance
Clinical playbooks are plain about matches. For soil-transmitted worms, many clinics start with albendazole or mebendazole; dosing and ages vary by region. You can review the U.S. guidance in the CDC’s clinical care for soil-transmitted helminths. For Giardia and other protozoa, choices include tinidazole, metronidazole, and nitazoxanide; see the CDC’s page on clinical care for giardiasis. For program-level context, the WHO summary on deworming medicines outlines efficacy across species; see the WHO’s preventive chemotherapy guidance.
Treatment Playbook By Situation
If Your Doctor Found A Worm
Soil-transmitted worms like roundworm and hookworm respond to albendazole or mebendazole. Whipworm can be stubborn and may need longer or combination therapy. Strongyloides needs ivermectin and, in some settings, screening for Loa loa before treatment. Tapeworm is usually cleared with praziquantel, with special care if there are neurologic symptoms that raise concern for cysticercosis.
If Your Doctor Found A Protozoan
Giardia often clears with a single dose of tinidazole or a short course of metronidazole or nitazoxanide. Cryptosporidium can be tough; hydration and time help, and nitazoxanide is used in some people. Entamoeba histolytica needs two phases: a tissue agent such as metronidazole or tinidazole, followed by a luminal agent like paromomycin to clear the gut.
If Tests Were Negative But Symptoms Fit
Repeat testing can catch intermittent shedding. Ask about travel, well water, camping exposures, raw foods, contact with day-care settings, and pets. A short trial of targeted therapy might be offered when suspicion remains high and the risks are low, but blind treatment for every person with diarrhea is a bad plan.
Home Measures That Speed Recovery
Hydration And Nutrition
Use oral rehydration solution or broths if diarrhea is heavy. Eat small meals with lean protein, cooked vegetables, rice, or potatoes. Limit greasy food and unpasteurized dairy until stools normalize. In lactose intolerance, temporary dairy avoidance helps. Probiotics have mixed data, yet many people feel better with yogurt containing live cultures once acute symptoms settle.
Hygiene Steps That Break The Cycle
- Wash hands with soap and water after using the toilet, changing diapers, and before any meal.
- Keep nails short; discourage nail-biting.
- Shower in the morning for pinworm cases to rinse eggs from skin.
- Change underwear daily; wash bedding and pajamas in hot water and dry on high heat for several days.
- Disinfect toilet seats and bathroom surfaces often during treatment.
- Drink safe water; boil or use filters that remove protozoa when camping.
- Cook meat and freshwater fish fully; avoid raw or lightly cured dishes until cleared.
Prevention After You’re Well
Keep the gains by tightening food and water habits. When traveling, drink sealed bottled water, avoid ice of unknown source, and stick to steaming-hot meals or fruit you can peel yourself. Back home, keep pets on a vet-guided deworming schedule and pick up stool from yards promptly. If one person in the house has pinworm, treat close contacts at the same time as directed and repeat the dose in two weeks.
When Local Rules Matter
Drug labels and availability vary by country. Some medicines used by experts are off-label for certain parasites in the U.S., while being standard elsewhere. That’s why a species match and a plan from a qualified clinician beats guesswork every time.
Putting It All Together
You came here to learn how to get rid of parasites in intestines quickly and safely. The short path is clear: test, treat with a targeted drug, block reinfection at home, and follow up if symptoms don’t settle. If you’re dealing with a confirmed case, you can use this page as your checklist and talk through the steps at your next visit.
If you’re still deciding how to get rid of parasites in intestines for your situation, start with stool testing, then match the drug to the species. Clean the home environment for two weeks, and treat close contacts when pinworm is in play. Most people feel better within days once the right plan is in place.