Five finger grass usually refers to creeping cinquefoil (Potentilla reptans), a low-growing member of the rose family. It has been used traditionally for diarrhea, mouth and throat rinses, and minor skin complaints. The practical answer, however, is cautious: there is little dependable human clinical research on this species, no established medical dose, and no good basis for using it to treat bleeding, infection, or persistent digestive symptoms. [Tomczyk and Latté review, 2009]
| Key takeaways: Five finger grass is best understood as a traditional herb with limited species-specific evidence. Do not use it as a substitute for oral rehydration, prescribed treatment, wound care, or evaluation of unexplained bleeding. Avoid vaginal irrigation entirely. |
What Is Five Finger Grass?
The name “five finger grass” is not botanically precise. In European herbal writing it commonly refers to Potentilla reptans, also called creeping cinquefoil. In North America, the same common name may be used for Potentilla canadensis or other cinquefoils. These are related plants, not interchangeable ingredients.
That distinction matters because research on one Potentilla species cannot automatically be applied to another. A major genus review specifically warned that differences in species and extraction methods make results difficult to transfer. [Journal of Ethnopharmacology review, 2009]
How to recognize creeping cinquefoil
Creeping cinquefoil typically spreads along the ground through long runners that can root at the nodes. Its leaves are usually divided into five toothed leaflets, and the flowers are yellow with five petals. A common name alone is not enough for safe identification. Do not ingest a wild plant unless a qualified botanist or experienced local expert has confirmed the species.
Silverweed (Potentilla anserina) is another member of the genus and has its own traditional-use history. It should be treated as a separate herb; see the site’s guide to silverweed for species-specific context.
Five Finger Grass Benefits: What the Evidence Shows
Most claims about five finger grass come from traditional practice, older herbal references, or laboratory and animal research on the wider Potentilla genus. Those sources can explain why the plant attracted interest, but they do not prove that a homemade tea or decoction treats disease in people.
| Claimed use | Evidence level | Practical conclusion |
| Loose stools or diarrhea | Traditional use; genus-level preclinical evidence | Insufficient human evidence for Potentilla reptans. Do not delay hydration or medical care. |
| Mouth or throat rinse | Traditional use | No reliable clinical evidence for treating tonsillitis, sores, gum disease, or infection. |
| Minor skin application | Traditional and laboratory interest | Not proven to heal acne, boils, chilblains, or infected wounds. |
| Bleeding in urine or sputum | No appropriate evidence | Do not self-treat. These symptoms need medical assessment. |
| Vaginal discharge or inflammation | No appropriate evidence; method carries risk | Do not douche or perform vaginal irrigation. |
Why tannins are often mentioned
Potentilla plants commonly contain tannins, compounds that can produce an astringent or drying effect in tissues. The 2009 review linked many traditional uses of the genus to tannin-rich preparations, while also calling for better clinical research. An astringent effect is a plausible mechanism, not proof of a safe or effective treatment. [Tomczyk and Latté, 2009]
Five Finger Grass for Diarrhea: Safer First Steps
There is no established evidence-based dose of five finger grass for acute diarrhea. The first priority is replacing fluids and electrolytes. Most people can return to their normal diet when their appetite returns; completely avoiding solid food until diarrhea stops is not routinely necessary. [NIDDK diarrhea treatment guidance, 2024]
- Drink water and fluids that contain electrolytes. Oral rehydration solution may be useful, especially when fluid losses are significant.
- Do not give over-the-counter antidiarrheal medicine to infants or young children without medical advice. Adults with bloody stools or fever should also avoid self-treating with these medicines unless a clinician advises otherwise.
- Contact a clinician promptly for severe pain, frequent vomiting, black or bloody stool, dehydration, high fever, six or more loose stools a day, or diarrhea lasting more than two days in an adult.
For a broader explanation of infections, medicines, food intolerances, and other causes, read causes and warning signs of diarrhea. The National Institute of Diabetes and Digestive and Kidney Diseases also notes that pregnancy, age over 65, antibiotic use, and a weakened immune system raise the risk of complications. [NIDDK symptoms and causes, 2024]
Uses That Should Not Be Tried at Home
Vaginal irrigation or douching
Do not use a five finger grass decoction as a vaginal irrigation. The vagina does not need internal cleansing. Douching has no demonstrated health benefit and can disturb normal vaginal bacteria and acidity, worsen irritation, and make it harder to diagnose discharge, odor, itching, or pain. [U.S. Office on Women’s Health, 2025]
Blood in urine or coughing up blood
Five finger grass should not be used to manage hematuria (blood in urine) or hemoptysis (coughing up blood). Blood in urine has many possible causes and is evaluated by identifying the underlying problem. [NIDDK hematuria guidance, 2022] Coughing up blood should be checked promptly; more than a few spots, or blood accompanied by breathing difficulty, a fast heartbeat, or chest or upper-back pain, requires emergency care. [NHS, 2024]
How to Use Five Finger Grass Safely
No standardized oral dose, treatment duration, or preparation has been established for Potentilla reptans. Traditional decoction recipes vary widely, and a concentrated homemade preparation is not equivalent to a clinically tested medicine.
- Do not use the herb to replace oral rehydration, antibiotics, prescribed medicine, dental care, wound care, or evaluation of bleeding.
- Choose a clearly labeled product that states the botanical name and plant part. “Five finger grass” on its own is too ambiguous.
- Avoid taking a wild-harvested plant unless its identity and collection conditions are known.
- Discuss use with a pharmacist or clinician if you take prescription medicine, have a chronic illness, or are preparing for surgery.
Side Effects, Interactions, and Who Should Avoid It
Specific side effects and their frequency have not been well characterized in human studies. That uncertainty is itself a safety limitation. Stop using the product and seek medical advice if you develop a new or worsening symptom.
Herbal supplements can interact with medicines, interfere with laboratory tests, or affect surgery. In the United States, dietary supplements are not approved by the FDA for safety and effectiveness before they reach the market. “Natural” does not guarantee safe. [FDA dietary supplement guidance, 2022] [NCCIH supplement safety guidance, 2019]
- Pregnancy and breastfeeding: Avoid medicinal use unless your healthcare professional specifically recommends it. Reliable safety data are lacking.
- Children: Do not give five finger grass as a medicinal preparation without guidance from a pediatric clinician.
- Prescription or over-the-counter medicines: Ask a pharmacist to check for potential interactions; species-specific interaction data are limited.
- Upcoming surgery: Tell the surgical team about every herb and supplement you use and follow their instructions about when to stop.
- Unexplained bleeding, severe diarrhea, suspected infection, or an open or infected wound: Do not self-treat with this herb.
When to Seek Medical Care
Get medical help rather than relying on an herbal preparation when symptoms may signal dehydration, infection, bleeding, or another underlying condition.
- Seek prompt care for blood in urine, any unexplained vaginal bleeding or discharge with pain, or even small amounts of blood coughed up.
- Seek emergency care for substantial coughing of blood, breathing difficulty, chest or upper-back pain, fainting, confusion, or a very fast heartbeat.
- For diarrhea, contact a clinician for black or bloody stool, severe abdominal or rectal pain, frequent vomiting, high fever, signs of dehydration, six or more loose stools a day, or symptoms lasting more than two days in an adult.
- Call a pediatric clinician promptly for an infant or child with diarrhea; dehydration can develop quickly.
| HEALTH DISCLAIMER: This article is for education only and does not diagnose, treat, cure, or prevent disease. Evidence for medicinal use of five finger grass is limited, and product identity and strength can vary. Talk with a qualified healthcare professional before using an herbal product, especially if you are pregnant, breastfeeding, giving it to a child, taking medicine, preparing for surgery, or experiencing persistent symptoms or bleeding. |
Frequently Asked Questions
What is five finger grass used for?
It has been used traditionally as an astringent herb for loose stools, mouth and throat rinses, and minor skin complaints. These are historical uses, not proven clinical indications for Potentilla reptans.
Can five finger grass stop diarrhea?
There is not enough dependable human evidence to recommend it as a diarrhea treatment. Fluids and electrolytes are the priority. Seek care for blood, fever, severe pain, dehydration, frequent vomiting, or diarrhea that persists.
How do you make five finger grass tea or a decoction?
Traditional recipes exist, but no evidence-based dose or concentration has been established. This article does not recommend a medicinal recipe because plant identity, strength, safety, and interactions are uncertain.
Is five finger grass the same as cinquefoil?
Five finger grass is a common name used for several cinquefoils. It often means Potentilla reptans in Europe and may refer to Potentilla canadensis in North America. Check the botanical name rather than relying on the common name.
Is five finger grass safe during pregnancy or breastfeeding?
Reliable safety data are lacking. Avoid medicinal use during pregnancy or breastfeeding unless a healthcare professional who knows your medical history specifically recommends it.
Can I put five finger grass on acne, boils, chilblains, or wounds?
Clinical evidence is insufficient. Do not apply a homemade preparation to deep, infected, badly inflamed, or slow-healing skin. Persistent or worsening skin problems need appropriate medical assessment.
References
- Tomczyk M, Latté KP. “Potentilla—A Review of Its Phytochemical and Pharmacological Profile.” Journal of Ethnopharmacology. 2009;122(2):184–204. DOI 10.1016/j.jep.2008.12.022. View source
- National Institute of Diabetes and Digestive and Kidney Diseases. “Symptoms & Causes of Diarrhea.” Last reviewed September 2024. View source
- National Institute of Diabetes and Digestive and Kidney Diseases. “Treatment of Diarrhea.” Last reviewed September 2024. View source
- National Center for Complementary and Integrative Health. “Using Dietary Supplements Wisely.” Updated January 2019. View source
- U.S. Food and Drug Administration. “FDA 101: Dietary Supplements.” Content current June 2, 2022. View source
- Office on Women’s Health, U.S. Department of Health and Human Services. “Douching.” Updated February 27, 2025. View source
- National Institute of Diabetes and Digestive and Kidney Diseases. “Hematuria (Blood in the Urine).” Last reviewed October 2022. View source
- National Health Service. “Coughing Up Blood (Blood in Phlegm).” Last reviewed June 13, 2024. View source
