Ginseng
Herbal products and dietary supplements
Herbal products and dietary supplementsPregnancy: avoid
Avoid in pregnancy. Oral use may be unsafe in pregnancy: one of its chemicals caused birth defects in animals, and experts advise against use in pregnancy and breastfeeding.
Root of Panax ginseng (Asian ginseng), promoted for energy and cognition. Small studies only; it can lower blood sugar and affect clotting.
Also called: Panax ginseng, Asian, Chinese or Korean ginseng, Red and white ginseng
Quick facts
- Group
- Herbal products and dietary supplements
- Target
- Multiple targets of ginsenosides (proposed)
- Used for
- Promoted for fatigue and cognition
- Key effects
- Insomnia · Headache and digestive upset · Rash
- Monitor
- Blood glucose in people with diabetes · Sleep
No doses: the clinician sets them by the current guideline.
Mechanism of action
The active constituents are triterpenoid saponins called ginsenosides, partly transformed by gut bacteria. Laboratory studies describe antiplatelet effects, improved glucose handling (more insulin release, less beta-cell death) and many other actions, but studies differ widely in species, extracts and doses, so the clinical meaning is uncertain.
- Ginsenosides are taken in the root extract
- Gut bacteria transform part of them
- Reported effects on platelets and glucose
- Added risk with anticoagulants and antidiabetic drugs
Indications
- Promoted for fatigue and cognition; small studies with conflicting results
- Studied in diabetes and prediabetes; evidence on blood sugar control is inconclusive Type 2 diabetes mellitus →
Adverse effects
Common
- Insomnia (the most common)
- Headache and digestive upset
- Rash
Contraindications
- Use with anticoagulants or antiplatelets without supervision
- Autoimmune disease
Key interactions
- Insulin and oral antidiabetic drugs
- Additive lowering of blood sugar
- Antiplatelet drugs and anticoagulants
- Possible additive effect on clotting
- MAOIs and other serotonergic drugs
- Listed among serotonin syndrome precipitants
What is monitored
- Blood glucose in people with diabetes
- Bleeding signs with anticoagulants
- Sleep
Pregnancy and breastfeeding
Avoid in pregnancy. Oral use may be unsafe in pregnancy: one of its chemicals caused birth defects in animals, and experts advise against use in pregnancy and breastfeeding.
Nursing care
- Ask every patient about herbal products and supplements and record them with the medicine list
- Check glucose more often in patients with diabetes who start ginseng
- Teach that «natural» does not mean safe and that supplements are not approved as medicines before sale
Pharmacokinetics
- Metabolism
- Ginsenosides are partly deglycosylated by gut flora
Test yourself
Think of the answer, then tap the question to see it.
What are the active constituents of Panax ginseng?
Ginsenosides, triterpenoid saponins.
What is the most common side effect of ginseng?
Insomnia.
Why does ginseng need care in people with diabetes?
It may lower blood sugar and add to the effect of insulin or oral antidiabetics.
Connections
← Back to the class: Herbal products and dietary supplements
Educational content on how drugs work; not a prescribing guide and no substitute for a health professional's advice. No doses are given.
Sources: Asian Ginseng: Usefulness and Safety (National Center for Complementary and Integrative Health (NCCIH), 2025).
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Representative model, for educational purposes only.