Whether it’s safe to take deworming medication while breastfeeding is a question many new mothers have, especially if they’re due for a routine deworming or have symptoms of a possible parasitic infection. Here’s an accurate, doctor-guided approach to the question.
Can Breastfeeding Mothers Be Dewormed?
The answer depends on the reason for deworming, and should always be discussed with a healthcare provider rather than decided alone:
- Routine, preventive deworming (done periodically without any specific symptoms or confirmed infection) is generally not necessary while breastfeeding and is usually postponed until after weaning, since the benefit doesn’t clearly outweigh even a small, uncertain risk.
- Treatment for a confirmed parasitic infection that poses a real health risk — such as certain fluke or tapeworm infections — is a different situation. Here, treatment is often appropriate even while breastfeeding, since leaving a genuine infection untreated carries its own risks, and several antiparasitic medications are considered compatible with breastfeeding.
The bottom line: don’t self-treat. A healthcare provider can confirm whether you actually have an infection, which medication is appropriate, and the correct dose and duration for your specific situation.
Parasitic Infections That May Require Treatment While Breastfeeding
A few specific infections are worth knowing about, since they sometimes do require prompt treatment regardless of breastfeeding status.
Lung Fluke Infection (Paragonimiasis)
Caused by a parasitic flatworm (Paragonimus species), this infection typically results from eating undercooked freshwater crab or crayfish. It can cause pneumonia-like respiratory symptoms alongside gastrointestinal issues. Common symptoms include:
- Fever
- Diarrhea
- Nausea
- Abdominal pain
- Cough, sometimes with blood-tinged sputum
Beef Tapeworm Infection (Taeniasis)
This results from eating undercooked beef containing tapeworm larvae. Many people have no symptoms at all, but when symptoms do occur, they can include:
- Abdominal pain
- Unintended weight loss
- Digestive upset, including nausea
- Anal itching (from segments of the worm passing in stool)
- Rarely, intestinal blockage in heavy infections
Cutaneous Larva Migrans
This skin condition occurs when hookworm larvae from dog or cat feces (commonly found in contaminated soil or sand) penetrate human skin, often through bare feet. It causes a distinctive, intensely itchy, winding, raised rash that can slowly progress across the skin over days, sometimes with blistering.
If you notice symptoms matching any of these infections, see a doctor for proper diagnosis (often via stool testing or other lab work) rather than assuming or self-treating — accurate diagnosis matters for choosing the right treatment.
Antiparasitic Medications and Breastfeeding Safety
Several antiparasitic medications are generally considered compatible with breastfeeding by organizations like the World Health Organization, primarily because they’re poorly absorbed into the bloodstream, meaning very little reaches breast milk:
- Mebendazole: Minimally absorbed systemically, generally considered compatible with breastfeeding.
- Albendazole: Similarly low systemic absorption, also generally considered compatible with breastfeeding.
- Pyrantel pamoate: Available over the counter in the U.S. for certain worm infections, with minimal systemic absorption.
- Praziquantel: Used for fluke and tapeworm infections. Unlike the medications above, praziquantel is absorbed more significantly into the bloodstream, and some health authorities have historically recommended briefly pausing breastfeeding (commonly cited as around 72 hours) after a dose, though guidance on this has evolved and isn’t fully consistent across sources. This is a conversation to have directly with your doctor, who can advise based on current guidance and your specific situation.
One medication sometimes mentioned in older or non-U.S. sources is levamisole — it’s worth knowing that levamisole was withdrawn from the human drug market in the United States in 2000 due to a risk of serious blood disorders (agranulocytosis), and it’s no longer approved for human use here. If you come across it mentioned as a deworming option, know that it isn’t a standard or available option for humans in the U.S. today.
Dosing for any of these medications depends on the specific parasite, its severity, and your individual health situation — this is genuinely a “let your doctor decide” area rather than something to determine from a general article. Your doctor or pharmacist will confirm the right medication, dose, and duration for you.
Preventing Parasitic Infections
Good hygiene and food safety habits go a long way in preventing the infections discussed above:
- Wash your hands thoroughly: Before eating and after using the bathroom, with soap and water.
- Keep nails trimmed and clean: This reduces the chance of transferring parasite eggs from hands to mouth.
- Cook meat, fish, and shellfish thoroughly: This is the key prevention step for both lung fluke (from undercooked crab/crayfish) and tapeworm (from undercooked beef) infections. Wash produce well too.
- Avoid walking barefoot on soil or sand that may be contaminated with animal feces: This helps prevent cutaneous larva migrans, especially in areas with stray or unleashed dogs and cats.
So, can breastfeeding mothers be dewormed? It depends on the reason: routine preventive deworming is usually unnecessary and can wait, while a confirmed infection often can and should be treated, using a medication and dose your doctor confirms is appropriate. This article is intended for general education and isn’t a substitute for personalized medical advice — always check with your doctor before starting any medication while breastfeeding.
Frequently Asked Questions
Is it safe to take deworming medication while breastfeeding?
It depends on the reason. Routine preventive deworming without a confirmed infection is usually unnecessary and can be postponed. If you have a confirmed parasitic infection, several medications like mebendazole, albendazole, and pyrantel pamoate are generally considered compatible with breastfeeding due to their low systemic absorption — but always confirm with your doctor first.
Can I take levamisole while breastfeeding?
Levamisole isn't approved for human use in the United States — it was withdrawn in 2000 due to serious side effect risks and is now only used in veterinary medicine here. It shouldn't be used by breastfeeding mothers or anyone else as a human antiparasitic treatment in the U.S.
Does praziquantel require stopping breastfeeding?
Some health authorities have recommended briefly pausing breastfeeding (often cited as around 72 hours) after a dose of praziquantel, though guidance varies and has evolved over time. Discuss this directly with your doctor, who can advise based on current recommendations and your situation.
How can I prevent parasitic infections while breastfeeding?
Thorough handwashing, keeping nails clean, cooking meat and seafood fully, washing produce, and avoiding walking barefoot on potentially contaminated soil or sand are the most effective prevention steps.
What are signs I might have a parasitic infection that needs treatment?
Symptoms vary by infection but can include fever, diarrhea, abdominal pain, unexplained weight loss, or an itchy, migrating skin rash. See a doctor for proper testing rather than self-diagnosing, since accurate diagnosis guides the right treatment.
References
- World Health Organization — guidance on antiparasitic medication use during breastfeeding (who.int).
- Centers for Disease Control and Prevention (CDC) — parasitic infections including paragonimiasis, taeniasis, and cutaneous larva migrans (cdc.gov/parasites).
- U.S. National Library of Medicine, LactMed Database — antiparasitic medications and lactation (ncbi.nlm.nih.gov/books/NBK501922).
- U.S. Food and Drug Administration / DEA — levamisole withdrawal from the human drug market (deadiversion.usdoj.gov).