What is mullaca?

Mullaca is a small weedy plant of the nightshade family, used as a folk remedy in Latin America. Its botanical name is Physalis angulata. It is also called cutleaf groundcherry.

The ripe orange berry, held in a papery husk, is eaten as a small fruit in many warm countries. Herbal use is different. It uses the leaves, stems and whole plant, as a tea, a capsule or a tincture.

Healers in the Amazon and across Latin America used it for fever, swelling, skin sores and coughs. Long use is not proof that it works, and it is not proof that it is safe. Almost no human trials exist, so the honest verdict is that the evidence is insufficient.

The green parts of nightshades can hold harsh compounds. That is why this page treats mullaca as a caution herb, not a casual tea.

How does mullaca work?

No one has shown what mullaca does in the human body. What follows comes from laboratory dishes and animals, not from people.

The plant holds a group of compounds called physalins. In cell studies, physalins appear to slow the growth of several cancer cell lines. Whether that means anything inside a person is not known.

In mice and rats, extracts appear to damp down parts of the immune response. Some animal work also reports less swelling and lower fever. These are early signals, not proven effects.

In test tubes, extracts slow the growth of some bacteria and of the malaria parasite. Growth slowing in a dish is a long way from treating an infection in a person.

A few rodent studies report lower blood sugar after dosing. This has not been tested properly in people. Treat it as a reason for caution, not a reason to expect help.

What forms does mullaca come in?

Mullaca is sold mainly by suppliers of Amazonian herbs, and it is not a mainstream product. Common forms include:

- Dried, cut whole plant for a tea or decoction - Powdered whole plant in capsules - Liquid tinctures in alcohol or glycerine - Fresh leaf poultices, used in folk practice for skin

The ripe fruit is a separate thing. It is sold and eaten as food, under names like groundcherry or camapu.

Quality control is weak across this category. Labels often give no extract strength and no test results.

Where it comes from:

Mullaca has a long record of folk use across tropical Latin America, and in parts of Africa and Asia where the plant also grows. Records of this use go back well before modern testing.

Amazonian and Caribbean healers used leaf teas for fever, malaria-like illness and swollen joints. Washes and poultices were applied to sores, boils and skin rashes.

In Peru and Brazil it was also given for coughs, stomach complaints and liver trouble. Some traditions used it to bring on a late period, which is why pregnancy is flagged on this page.

These are historical practices, written down by travellers, botanists and ethnographers. They describe what people did. They are not a recommendation to copy it.

What does mullaca help with?

• Fever: This was one of the main folk uses of the leaf tea across the Amazon. Some rodent studies report a drop in fever after extracts are given. There are no human trials. A fever that is high or lasting needs a doctor, not a herb.
• Swelling and joint pain: Tradition used washes and teas for swollen, sore joints. In animal studies, physalins appear to reduce swelling markers. No trial has tested this in people with arthritis or injury.
• Skin sores and boils: Crushed leaves were applied to sores and boils in several Latin American traditions. Lab tests show some extracts slow bacterial growth in a dish. Whether that happens on human skin has not been shown. Broken skin can also react badly to raw plant material.
• Coughs and chest complaints: Leaf teas were given for coughs and chest tightness. There is no human evidence that mullaca helps asthma, bronchitis or any lung condition. Do not swap an inhaler or prescribed treatment for it.
• Malaria and other infections (traditional use): The plant was widely used where malaria is common. Test tube work shows some activity against the malaria parasite and against certain bacteria. This has never been tested as a treatment in people. Malaria is life threatening and needs proper medical care.
• Blood sugar control: Some folk use targeted diabetes, and a few rodent studies report lower blood sugar. Human data is absent. If you take diabetes medicine, this is a reason to be careful, not a reason to try it.
• Liver complaints: Teas were used for jaundice and 'liver heat' in folk practice. There is no human evidence of benefit. Liver symptoms, such as yellow skin or eyes, need medical testing.

Which foods are rich in mullaca?

Mullaca is not a nutrient, so no food is rich in it. The ripe fruit of Physalis angulata is eaten as food in parts of Latin America, Africa and Asia. Eating the ripe fruit is not the same as taking a whole plant extract.

What are the side effects of mullaca?

• Nausea
• Stomach cramps
• Diarrhoea
• Vomiting after large amounts or unripe fruit
• Drowsiness
• Low blood sugar signs, such as shakiness or sweating
• Skin rash or itching
• Mouth and throat irritation from strong teas

Good to know:

Side effects have not been tracked in any proper study, so no one can say how common they are. Reports come from folk use and from poisoning cases.

Mild stomach upset is the most often mentioned problem. The serious hazard sits elsewhere. Eating unripe green berries, leaves or stems of Physalis plants has caused vomiting, cramps and collapse, mostly in children and grazing animals.

Stop taking it and get medical help if you feel very unwell, confused or faint.

How much mullaca should you take?

• Recommended daily: No safe or effective dose has been set for mullaca in people. Nothing here is advice for you. For reference only: capsule labels from Amazonian herb suppliers often list 500 mg to 1 g of powdered whole plant, once or twice a day. Tea labels often suggest one teaspoon of dried plant per cup. These numbers come from sellers, not from trials. Products are not standardised, so the same label amount can deliver very different strengths. A doctor or a trained herbalist should guide any use.
• Best time of day: Time of day has not been studied and is unlikely to matter much. Some rodent work suggests blood sugar may drop, so taking it late at night on an empty stomach is best avoided.
• With or without food: Taking it with food is the sensible default. Food lowers the chance of nausea or stomach upset, which is the most common complaint reported.
• Time to effect: No reliable answer exists, because the effects have not been measured in people. Folk accounts describe fever easing within a day or two. It may do nothing at all. If a symptom is not improving, that is a reason to see a doctor, not to raise the amount.
• How long to take it: There is no tested safe length of use. Folk use was mostly short, over days or a few weeks, for a specific complaint. Animal work hints that the plant can damp the immune response. That makes long daily use a poor idea without medical oversight. Do not treat it as a daily tonic.