What is Sasam?

Sasam is the dried root of the ladybell plant, Adenophora triphylla. In Korean medicine it is a single drug, meaning it is one plant used on its own rather than a fixed mixture. It is best known as a remedy for a dry, tickly cough and a dry throat.

Korean practitioners class it as a "moistening" root. It is given to people whose cough is dry and unproductive, whose mouth and throat feel parched, or who are recovering from a long illness or fever that left them dry and tired.

The honest evidence picture: Sasam has a long and respected place in Korean herbal practice, but human trial evidence is very thin. Long traditional use tells you a plant has been used and tolerated for a long time. It is not the same thing as proof that it works, and that distinction applies to everything on this page.

How does Sasam work?

Nobody has shown clearly how Sasam works in people. What follows is proposed, not proven.

In Korean and East Asian theory, Sasam is said to "moisten the lung" and "generate fluids" — traditional language for easing dryness in the airways and mouth. That is a description of how practitioners think, not a biological mechanism.

Laboratory work on Adenophora root extracts has reported mild anti-inflammatory (swelling-calming) and antioxidant (cell-protecting) activity, plus some loosening of mucus in animal tests. These are test-tube and animal findings. They do not tell you what a cup of Sasam tea does in a human body.

What forms does Sasam come in?

The most common form is dried sliced root, simmered in water to make a decoction (a strong tea made by boiling, not steeping). This is the traditional Korean preparation.

You may also find it as a powder, in capsules, or as a liquid extract. Some Korean products use it in honeyed syrups and lozenges aimed at dry throat.

It is also a food. Korean cooks use the fresh root as namul (a seasoned vegetable side dish) and pickle it as jangajji. Young shoots are eaten as a spring green.

One important label point: several different plants are sold under "sasam"-type names. Adenophora triphylla is not the same as Glehnia littoralis (haesasam, sold as "coastal sasam") or Codonopsis lanceolata (deodeok). Check the Latin name on the package.

Where it comes from:

Ladybell root has been used in Korea for centuries, both as a mountain vegetable and as a medicine for dry cough. It appears in the Korean herbal tradition as a cooling, moistening root for the lungs and throat.

Related Adenophora species are also used in Chinese materia medica under the name nan sha shen, and in Japanese Kampo practice. Species and naming differ between countries, so old texts do not always mean the same plant.

What does Sasam help with?

• Dry, tickly cough: This is the classic Korean use for Sasam, and it is the reason most people reach for it. Practitioners choose it for a cough that is dry and unproductive rather than wet and rattling. There are no published human trials testing Sasam alone for cough, so this rests on tradition and practitioner experience.
• Dry or scratchy throat: Sasam is often combined with honey or liquorice in Korean throat syrups and teas. The comfort many people report may come mostly from warm sweet liquid coating the throat, which is a real effect but not specific to this root. No trial has separated the two.
• Dry mouth and thirst: Traditional texts describe Sasam as a fluid-generating root for a parched mouth and constant thirst. If your dry mouth is persistent, it is worth asking a doctor about causes such as medicines, diabetes (high blood sugar) or a salivary gland problem. Sasam has not been tested for dry mouth in humans.
• Recovery after fever or long illness: In Korean practice Sasam is used in convalescence, when someone is dry, weak and has a poor appetite after being ill. It is usually combined with other herbs and with food rather than taken alone. Evidence here is traditional only.
• Dry-feeling chest with little or thick phlegm: Animal studies on Adenophora extracts have reported some loosening of airway mucus. That has not been repeated in people. If you have ongoing breathlessness, wheezing or a cough lasting more than three weeks, get it checked rather than self-treating.

Which foods are rich in Sasam?

1. Ladybell root namul: the fresh root blanched and seasoned as a Korean side dish
2. Ladybell root jangajji: the root pickled in soy or soybean paste
3. Spring ladybell shoots: the young leaves eaten as a mountain green
4. Korean throat teas and honeyed syrups that list Adenophora triphylla

Practical Tips:

Eaten as food in normal cooking amounts, Sasam has a long safe track record in Korea.

What are the side effects of Sasam?

• Mild stomach upset or nausea
• Loose stools or bloating, mostly from the fibre content
• Allergic reaction: rash, itching, or swelling
• A bitter or earthy aftertaste some people dislike

Good to know:

Sasam is generally well tolerated, and in Korea it is eaten as a food as well as used as a medicine. Reported problems are mild and mostly digestive.

Because formal safety studies are lacking, rare effects may simply not have been recorded yet. Stop taking it and get medical help if you get a rash, itching, swelling of the lips or tongue, or any trouble breathing.

How much Sasam should you take?

• Recommended daily: There is no dose established by clinical research, because the trials that would set one have not been done. In traditional Korean and East Asian practice, dried Sasam root is usually simmered at about 9 to 15 grams per day, divided into two or three servings of tea. Powdered root and extracts vary widely, so follow the product label rather than guessing. When it is eaten as a vegetable side dish, normal food amounts are the sensible limit.
• Best time of day: Usually split into two or three servings across the day. Many people take one serving in the evening when a dry cough is most bothersome.
• With or without food: Either. Taking it with or just after food is gentler if it upsets your stomach.
• Time to effect: If it helps at all, the soothing effect on a dry throat is usually noticed within a few days. There is no reliable data on this, so treat it as a rough expectation, not a promise.
• How long to take it: Short courses are the traditional pattern. For a dry cough or dry throat, two to three weeks is a reasonable trial. If nothing has improved after about three weeks, stop and reassess rather than pushing the dose up. Long continuous use has not been studied for safety.