Rhamnus purshiana, Cascara Sagrada, Cascara

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Rhamnus purshiana, commonly known as Cascara Sagrada and Cascara, is a small tree or large shrub, evergreen plant of the Rhamnaceae family. It is also used in traditional medicine. It is also known as Cascara buckthorn, Bearberry, Sacred Bark, Persian bark, Purshiana bark, Chittum bark...

For severe symptoms, danger signs, pregnancy, child illness, or sudden worsening, seek urgent medical care.

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Article Summary

Rhamnus purshiana, commonly known as Cascara Sagrada and Cascara, is a small tree or large shrub, evergreen plant of the Rhamnaceae family. It is also used in traditional medicine. It is also known as Cascara buckthorn, Bearberry, Sacred Bark, Persian bark, Purshiana bark, Chittum bark rhamnus purshiana, Chitticum and California buckthorn in English among various names in other languages. It is native to Western North...

Key Takeaways

  • This article explains Cascara Scientific Classification in simple medical language.
  • This article explains Health Benefits of Cascara in simple medical language.
Educational health guideWritten for patient understanding and clinical awareness.
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Emergency safety firstUrgent warning signs are highlighted below.

Seek urgent medical care if you notice

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  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

Emergency now

Use emergency care for severe, sudden, rapidly worsening, or life-threatening symptoms.

2

See a doctor

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Learn safely

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Rhamnus purshiana, commonly known as Cascara Sagrada and Cascara, is a small tree or large shrub, evergreen plant of the Rhamnaceae family. It is also used in traditional medicine. It is also known as Cascara buckthorn, Bearberry, Sacred Bark, Persian bark, Purshiana bark, Chittum bark rhamnus purshiana, Chitticum and California buckthorn in English among various names in other languages. It is native to Western North America (Southern British Columbia, South to Central California and East to Northwestern Montana). This plant prefers warmer climates and thrives in well-drained soil.

Cascara Scientific Classification

Scientific Name: Rhamnus purshiana

RankScientific Name & (Common Name)
KingdomPlantae  (Plantes, Planta, Vegetal, plants)
SubkingdomViridiplantae
InfrakingdomStreptophyta (Land plants)
SuperdivisionEmbryophyta
DivisionTracheophyta  (Vascular plants, tracheophytes)
Sub divisionSpermatophytina  (Spermatophytes, seed plants, phanérogames)
ClassMagnoliopsida
SuperorderRosanae
OrderRosales
FamilyRhamnaceae  (Buckthorns, nerpruns)
GenusRhamnus L. (Buckthorn)
SpeciesRhamnus purshiana DC. (Cascara buckthorn, Pursh’s buckthorn)
Synonyms
  • Frangula purshiana (DC.) A. Gray
  • Frangula purshiana (DC.) A. Gray
  • Frangula purshiana (DC.) Cooper
  • Frangula purshiana (DC.) J. G. Cooper
  • Frangula purshiana ssp. annonifolia (Greene) Sawyer & S.W. Edwards
  • Frangula purshiana ssp. ultramafica Sawyer & S.W. Edwards
  • Frangula purshiana subsp. annonifolia (Greene) Sawyer & S.W. Edwards
  • Frangula purshiana subsp. ultramafica Sawyer & S.W. Edwards
  • Rhamnus purshiana
  • Rhamnus purshiana DC.
  • Rhamnus purshiana DC.

History

The dried bark of Cascara was used by Immigrant Euro-Americans and Pacific Northwest native people as a laxative. It is also called Cascara Sagrada commercially and chitticum bark or chittem bark traditionally. In 1600s, the Spanish conquerors used the bark of Cascara as a laxative. They called it sacred bark due to its effectiveness. In 1877, Parke-Davis which is the U.S. pharmaceutical company produced Cascara preparations and products which got exported to the European markets. During 1900s, the explosion of Cascara industry result to the huge damage. In North America, Cascara is used in the preparations of drug and natural product. It is mostly used as a purgative in the world.

Plant

Rhamnus purshiana is a large shrub or small evergreen tree growing upto 4.5-10 m tall in height with a trunk diameter 20-30 cm and brown to silver grey, smooth yellowish bark. The leaves are simple, deciduous, oval; 5-15 cm long, and 2-5 cm broad. They are shiny, green on the top or paler green below and are arranged alternately. The flowers are greenish-yellow, tiny with five petals; they are 4-5 mm in diameter, cup-shaped and 3-4 mm long. The fruit is a drupe measuring 6-10 mm in diameter and 5-8 mm across. The fruit is a dark blue to purple with inside flesh yellow which contains two or three, hard, smooth, olive to green or black seeds.

Health Benefits of Cascara

Dried bark is considered as the medicinal part of the Cascara plant. Since the early 1800s, Cascara was used laxative in folkloric medicine. It also prohibits the habit of biting nails. It is an effective aid for constipation, jaundice and liver diseases. The bark is considered to be an astringent and cooling herb that is helpful for the digestive system. It also possesses purgative, therapeutic, toxic, and tonic properties. This herb is available in various forms such as liquid, powder, tablet, dried and capsule. It also raises the bile secretion from gall bladder due to which it prevents gallstones. It enhances the walls of the colon. Chronic constipation could be treated effectively with Cascara.

  1. Cure constipation

It is good for the digestive system. It eliminates the parasitic and colon infestation. It helps to cure constipation effectively. The bark of Cascara acts as an bacterial infections. সহজ বাংলা: ব্যাকটেরিয়ার সংক্রমণের ওষুধ।" data-rx-term="antibiotic" data-rx-definition="An antibiotic is a medicine used to treat bacterial infections. সহজ বাংলা: ব্যাকটেরিয়ার সংক্রমণের ওষুধ।">antibiotic which helps to treat the upset stomach.

  1. Laxative properties

Cascara is considered as laxative which is the simple solution of the Mother Nature. It is widely known for their laxative property which helps in the bowel movements.

  1. Cures gallstone

The bark promotes the function of gastrointestinal and digestion. During the early stage, it could be treated. It is used to cure the stones of gall bladder. Drink the tea made with Cascara for about 2-3 times in a day which helps to raise the secretion of bile to run off the stone.

  1. Liver health

The addition of Cascara tea to the diet helps to treat the liver complications mostly the enlarged liver.

  1. Treats insomnia

Cascara tea calms the nerves and provides the sound sleep. It is effective to the insomnia patients.

  1. Cancer

Cascara possesses antioxidants that help to eliminate cancer. It eliminates the free radicals and destroys the cells that could lead to cancer. The daily intake of tea helps to ward off the diseases.

  1. Lose weight

Cascara assists the people who want to lose the kilos of weight. It provides the satisfactory body weight.

  1. Slows down ageing

Ageing is caused due to the poor eating habit and pollution. The bark protects the skin from blemishes and wrinkles that provides clear skin. One should consume this tea daily to get the healthy skin.

  1. Skin ailments

Patchy skin and acne has become the common skin problems. The application of Cascara to the affected area lowers the skin ailments.

  1. Healthy hair

Hair fall has become the common problem in the women. Lots of products could be found to lower the hair loss. Cascara protects the hair as well as scalp. It also reduces the hair problems such as lice and dandruff which is possible due to its medicinal properties.

Traditional uses

  • The dried bark is used as a laxative.
  • It is used to treat the chronic constipation.
  • The bark possesses tonic properties which promotes appetite and gastric digestion.
  • It is used internally to treat digestive complaints, jaundice, hemorrhoids and liver problems.
  • The bark is used to treat heart tendon. সহজ বাংলা: মাংসপেশি/টেনডনে টান।" data-rx-term="strain" data-rx-definition="A strain is injury to a muscle or tendon. সহজ বাংলা: মাংসপেশি/টেনডনে টান।">strain, biliousness and internal strains.
  • It is used externally is used to prevent biting of nails.
  • It helps to treat hemorrhoids.
  • Traditionally it is used to cure liver ailments.
  • Cascara helps to cure upset stomachs.
  • It helps to eradicate worm.

Precautions

  • It should not be used by the pregnant or lactating women and the people with intestinal injuries.
  • The people with irritable bowel syndrome, Chron’s disease, hemorrhoids, colitis, irritable bowel syndrome, kidney problems or appendicitis should avoid it.
  • Cascara should be kept away from children.
  • The fresh Cascara results in gastrointestinal irritation, vomiting, intestinal spasms, nausea and diarrhea.
  • Consult an expert or physician before using Cascara.
  • The excessive dose or long use of Cascara could lead to diarrhea.
  • The long use causes the loss of potassium leading to brownish yellow urine.
  • One should lower the dose in case of negative reactions.
  • It should not be used by the children who are below six years.
  • It should not be used during menstruation.
  • It should not be used by the patients of renal failure, hepatic insufficiency, nephritis or heart failure.

How to Eat

  • Fruit is eaten either cooked or raw.
  • The bark extract by removing bitterness helps to enhance the flavor of baked goods, soft drinks and ice cream.
  • It is also brewed as coffee.

 


References

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Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Use oral rehydration solution and safe fluids to prevent dehydration.
  • Continue safe, light food as tolerated.
  • Seek care for children, older adults, pregnancy, or chronic illness.

OTC medicine safety

  • ORS is usually safer than unnecessary antibiotics for simple watery diarrhea.
  • Do not use anti-diarrhea stopping medicines if there is blood in stool or high fever unless a doctor advises.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Blood in stool, severe dehydration, persistent vomiting, very low urine, or lethargy needs urgent care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

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Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Rhamnus purshiana, Cascara Sagrada, Cascara

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

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Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

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