Lavender flowers in a field with a blue skyNikolett Emmert

7 Succulents Used in Traditional Medicine

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Succulents are best known for storing water in their thick leaves and stems, but several species also have long histories in traditional medicine. Aloe vera, prickly pear, purslane, and other plants have been used in preparations for skin, digestive, and nutritional purposes.

Traditional use does not automatically prove that a plant is safe or medically effective. Some succulent remedies have been studied in people, while others are supported mainly by laboratory research, animal studies, or historical accounts.

 

Important: This article is for educational purposes and is not medical advice. Do not eat or apply a plant based only on its appearance or common name. Plant remedies can cause allergic reactions, poisoning, medication interactions, and pregnancy-related risks. Consult a qualified healthcare professional before using an herbal product to treat a health condition.

 

1. Aloe Vera

Aloe vera is the most extensively studied succulent on this list. The leaf contains a clear inner gel and a yellowish substance called latex. These parts have different chemical compositions and should not be treated as interchangeable.

Aloe gel has a long history of topical use for minor burns and irritated skin. According to the National Center for Complementary and Integrative Health, clinical research suggests that topical aloe gel may help speed burn healing and reduce burn-related pain. Evidence for many other advertised benefits remains limited.

Oral aloe products require greater caution. Aloe latex has a strong laxative effect and can cause abdominal pain, diarrhea, and potentially dangerous changes in electrolyte levels. In 2002, the US Food and Drug Administration required aloe latex to be removed from over-the-counter laxative products because manufacturers had not provided adequate safety data.

Whole-leaf aloe extract and purified inner-leaf gel are also not the same product. Readers should never assume that a homemade aloe preparation is equivalent to a standardized commercial gel used in research.

 

2. Prickly Pear Cactus

Prickly pear generally refers to cacti in the genus Opuntia. The pads, called cladodes or nopales, and the fruits of some species are eaten as food. Prickly pear also has a history of traditional use for digestive complaints, wounds, and metabolic conditions.

Researchers have studied Opuntia ficus-indica for possible effects on blood sugar, cholesterol, inflammation, and body weight. Some human studies have reported changes in certain metabolic measurements, but the evidence is inconsistent and does not establish prickly pear as a replacement for medical treatment.

A systematic review of randomized trials found that prickly pear supplementation did not produce a statistically significant reduction in body weight. The included studies also varied in design and quality.

Prickly pear products may affect blood sugar. Anyone taking diabetes medication should discuss concentrated extracts or supplements with a healthcare professional. Handling unprepared pads also presents a physical hazard because small, easily detached glochids can lodge in the skin.

Learn more about the relationship between cacti and other plants in our guide to the different types of succulents.

 

3. Purslane

Portulaca oleracea, commonly called purslane, is an edible succulent with fleshy leaves and stems. It has been used as both food and traditional medicine in several regions of the world.

Purslane contains nutrients and plant compounds that have attracted research interest. Clinical trials have examined purslane seeds and extracts in people with metabolic conditions, but results have not been uniform.

For example, one randomized trial involving people with nonalcoholic fatty liver disease found no significant differences between purslane extract and placebo for the primary liver, lipid, and glycemic measurements at the end of the study. Other studies have reported changes in selected measurements, demonstrating why results from a single trial should not be treated as definitive proof.

Eating correctly identified purslane as a food is different from taking a concentrated extract. Do not collect a wild plant for consumption unless its identity and growing conditions are known. Plants exposed to pesticides, roadside pollution, or animal waste should not be eaten.

 

4. Agave

Agaves have been used for food, fiber, beverages, and traditional preparations for centuries. Their leaves form large rosettes, and many species end in sharp terminal spines.

Agave syrup is a sweetener, not a medicine. Descriptions such as “natural” or “plant-based” do not make a concentrated sweetener therapeutic or appropriate for unlimited consumption.

Fresh agave sap can irritate the skin. The plant contains needle-like calcium oxalate crystals and other compounds that may cause contact dermatitis. Its sharp leaf tips can also produce puncture injuries.

Historical use and laboratory findings do not establish raw agave sap as a safe home treatment. Avoid applying freshly cut agave to the skin or ingesting an unidentified agave preparation.

 

5. Kalanchoe

Some Kalanchoe species, particularly Kalanchoe pinnata, have been used in traditional preparations for wounds, inflammation, infections, and other conditions.

Laboratory researchers have identified biologically active compounds in Kalanchoe extracts. However, activity in isolated cells does not demonstrate that eating the plant will safely or effectively treat disease in a person.

This distinction is especially important because some Kalanchoe species contain cardiac glycosides called bufadienolides. These compounds can affect the heart and are toxic to animals. The concentration may vary among species, plant parts, and preparations.

Do not ingest a Kalanchoe houseplant or use it as a homemade cancer, infection, or heart treatment. Promising laboratory research is an early research step, not evidence of an approved therapy.

 

6. Houseleek

Sempervivum tectorum, commonly called houseleek, is a cold-tolerant succulent that produces compact rosettes and offsets. Its leaves have been used in European folk preparations for burns, insect bites, ear complaints, and irritated skin.

Modern studies have identified phenolic and flavonoid compounds in houseleek extracts. Much of this work examines the plant’s chemical composition or activity in laboratory tests rather than its effectiveness as a treatment in people.

There is not enough high-quality clinical evidence to recommend homemade houseleek juice as a treatment for burns, ear pain, infections, or other medical conditions. Plant material should never be inserted into the ear, particularly when an eardrum injury or infection may be present.

 

7. Yucca

Yucca species are drought-tolerant plants with firm, sword-shaped leaves. Indigenous peoples have used different yucca species for food, fiber, soap, and traditional preparations.

Yucca contains compounds called saponins. These compounds are one reason yucca has been investigated for possible biological effects. However, human clinical evidence supporting yucca supplements as treatments for arthritis, inflammation, or other diseases remains limited.

Yucca plants should not be confused with yuca, another name for the edible cassava root. They are different plants with different preparation requirements and safety concerns.

Concentrated yucca supplements can also differ considerably from foods or traditional preparations. A product’s plant source, processing method, concentration, and added ingredients all affect its safety.

 

Traditional Use Versus Medical Evidence

Several kinds of evidence may be mentioned when people discuss medicinal plants:

  • Traditional use: A plant has been used by a community or culture over time.
  • Laboratory research: A plant compound has produced an effect in cells, tissues, or chemical tests.
  • Animal research: A preparation has been tested in animals but not necessarily in people.
  • Human observational research: Researchers identify an association without proving that the plant caused the result.
  • Clinical trials: A defined preparation is tested in human participants under controlled conditions.

A laboratory result cannot establish an effective human dose, and a historical use cannot guarantee safety. Even a promising clinical trial must be considered alongside its size, design, product formulation, and findings from other studies.

 

Why Plant Identification Matters

Common names are not reliable enough for medicinal use. The name aloe, for example, can be applied to numerous species. Some unrelated plants can also resemble edible or traditionally used succulents.

Scientific names help identify plants more precisely, but identification is only one part of safety. Growing conditions, contamination, preparation method, dose, medications, allergies, pregnancy, and existing health conditions can all change the risk.

Our glossary of succulent terms explains common botanical vocabulary used when identifying and describing these plants.

 

Basic Safety Guidelines

  • Do not use an unidentified plant as food or medicine.
  • Do not assume that a houseplant is safe because another species with the same common name is edible.
  • Keep potentially toxic succulents away from children and pets.
  • Do not replace prescribed treatment with a plant remedy.
  • Ask a healthcare professional about possible medication interactions.
  • Avoid medicinal plant products during pregnancy or breastfeeding unless a qualified professional confirms their safety.
  • Seek medical or poison-control assistance after a suspected poisoning or serious reaction.

 

What the Research Actually Shows

Succulents have contributed foods, traditional preparations, and compounds of scientific interest. Aloe vera has some clinical support for specific topical uses, while prickly pear and purslane have produced mixed or preliminary findings in human studies. Evidence for the medicinal use of agave, Kalanchoe, houseleek, and yucca is more limited or accompanied by important safety concerns.

These plants are worth studying, but “medicinal” should not be interpreted as proven, harmless, or suitable for self-treatment. The safest approach is to appreciate traditional knowledge while evaluating each claim using modern clinical evidence and professional medical guidance.

 

Sources and Further Reading