What is Patha?

Patha is the dried root of a climbing vine, Cissampelos pareira. In Ayurveda it is used on its own as a single drug, mainly for loose stools, griping belly pain, fever and urinary complaints.

It is bitter and drying. Classical texts group it with the herbs used to settle the gut and to help the body clear what it calls ama, meaning poorly digested waste.

The honest evidence position: Patha has a long and well documented place in Ayurvedic practice, but we could not find published human trials testing it for any condition. Long traditional use is not the same as proof that something works, and that applies to everything on this page.

How does Patha work?

Nobody has shown in people how Patha works. What follows is what laboratory and animal work suggests, and it may not carry over to a human taking a tea or a powder.

The root contains a group of alkaloids (strong plant chemicals) that appear to relax smooth muscle, the muscle in the gut wall and blood vessel walls. That is the usual explanation offered for its traditional use in cramping diarrhoea.

Some of these same alkaloids belong to the chemical family that includes curare, the South American arrow poison that blocks the signal from nerve to muscle. In test-tube work Patha alkaloids show a weak version of that effect. This has not been shown to happen at normal food-herb doses, but it is the reason anyone facing surgery should stop the herb first.

Animal studies also report lower blood sugar, lower blood pressure and reduced inflammation. These are animal findings only.

What forms does Patha come in?

Patha is sold and used in a few simple forms.

Dried root powder, called patha churna, is the most common. A water decoction (kwatha), made by boiling the chopped root, is the classical form used for gut complaints.

You will also see tablets and capsules of the plain powder, and liquid extracts. Patha is also an ingredient in multi-herb Ayurvedic formulas, but this page covers Patha used on its own as a single drug.

One practical warning about buying it: the name Patha is used loosely in Indian herb markets. Cyclea peltata, Stephania species and other look-alike roots are sold under the same name, and in the wider trade in related roots there have been cases where Aristolochia species, which damage the kidneys, were supplied by mistake. Buy only from a seller who names the botanical species on the label.

Where it comes from:

Patha appears in the oldest Ayurvedic texts, including the Charaka Samhita and the Sushruta Samhita, where it is listed among herbs for diarrhoea, fever and worms.

It stayed in continuous use through the classical Ayurvedic tradition and is also used in Siddha and Unani practice in South Asia.

The same plant grows across the tropics and is used in South America under the name abuta, mainly for menstrual and urinary complaints. That is folk use rather than a documented classical system.

What does Patha help with?

• Diarrhoea and dysentery: This is Patha's main classical use, and the one most often repeated in Ayurvedic texts. The root is given as a decoction to firm up loose stools and settle griping. There are no published human trials testing it for this.
• Cramping belly pain: Traditional practice pairs Patha with ginger or other warming herbs for spasm-type belly pain. Laboratory work on animal gut tissue shows the alkaloids relax smooth muscle, which fits the traditional claim but does not prove it in people.
• Fever: Ayurvedic texts list Patha among bitter herbs used during fevers with poor digestion. Test-tube work on dengue virus has been published, but it has not been followed by trials in people, so no claim about fever illness can be made.
• Urinary complaints and painful urination: Both Ayurvedic and South American folk use include burning or difficult urination. Evidence is traditional only. Burning when you pass urine can mean an infection, which needs a doctor, not a herb.
• Poor appetite and sluggish digestion: Patha is a bitter, and bitters are used across many traditions before meals to wake up digestion. This is a traditional rationale, not a tested one.
• Heavy or painful periods: Traditional use here is real but it cuts both ways. The same traditions that use Patha to bring on delayed periods also treat it as a herb that can act on the womb, which is exactly why it must not be used in pregnancy.

Which foods are rich in Patha?

Patha is a medicinal root, not a food, and it is not an ingredient in any normal diet.

What are the side effects of Patha?

• Nausea
• Vomiting at high doses
• Dry mouth from the strong bitter taste
• Belly discomfort
• Constipation if used for too long
• Dizziness or light-headedness, possibly from a drop in blood pressure
• Low blood sugar, reported in animal studies
• Unusual muscle weakness, which is rare and should be treated as a reason to stop at once

Good to know:

Most reported problems are mild gut upset at higher doses, and they settle when you stop. Serious reactions are not commonly reported, but that partly reflects how little Patha has been studied rather than proof that it is harmless.

The two effects to take seriously are muscle weakness and anything that starts after you began another medicine. Stop the herb and speak to a doctor in either case.

How much Patha should you take?

• Recommended daily: No modern study has set a safe, proven daily dose for Patha. The amounts below come from Ayurvedic practice and Indian materia medica texts, not from trials. Dried root powder (churna) is usually given as 1 to 3 grams a day, split into two doses. A water decoction (kwatha) is usually 50 to 100 millilitres a day, made from roughly 5 to 10 grams of chopped root. Start at the low end of the range. Do not take more than the product label states. If you take any prescription medicine, do not start Patha without asking your doctor or a qualified Ayurvedic practitioner first.
• Best time of day: Usually taken twice a day, morning and evening. When it is used as a bitter to help appetite, tradition gives it shortly before a meal instead.
• With or without food: The powder is usually taken with warm water, or stirred into honey or buttermilk, after food. Taking it on an empty stomach makes nausea more likely, especially at higher doses.
• Time to effect: For loose stools and cramping, traditional practice expects some change within one to three days. Nothing about this timing has been measured in a trial, so treat it as expectation, not evidence.
• How long to take it: Patha is traditionally used for short runs, not as a daily supplement. For a gut upset, one to two weeks is the usual length. If your symptoms have not clearly improved in a week, stop and get checked rather than continuing. There is no safety data at all on taking Patha for months or years. Treat long-term use as untested.