Question 1

How does Convolvulus scammonia work as a purgative?

Accepted Answer

Convolvulus scammonia contains resin glycosides, including scammonin and scammonic acid, which act as powerful intestinal irritants. These compounds stimulate the intestinal mucosa, triggering vigorous peristalsis and increasing fluid secretion into the bowel lumen. This mechanism produces a forceful cathartic effect within 1-3 hours of ingestion. The resin's action is considered one of the most potent among herbal purgatives. Evidence Level C.

Question 2

Does Convolvulus scammonia interact with medications?

Accepted Answer

Yes, Convolvulus scammonia poses significant interaction risks. Its powerful purgative action accelerates intestinal transit, potentially reducing absorption of oral medications. Concurrent use with cardiac drugs, particularly digoxin and diuretics, is especially dangerous due to electrolyte disturbances and dehydration. Combining it with other laxatives increases the risk of severe fluid and electrolyte loss. Evidence Level C. Medical supervision is essential.

Question 3

What is the recommended dosage for Convolvulus scammonia?

Accepted Answer

Convolvulus scammonia is NOT recommended for routine therapeutic use due to its dangerously potent purgative effects. Historical sources cited doses of 125-500mg of resin, but such amounts can cause severe dehydration, violent gastrointestinal cramping, and dangerous electrolyte imbalances. Evidence Level C. Safer, evidence-based laxatives are available. Any use should occur only under qualified medical supervision.

Question 4

Is Convolvulus scammonia safe during pregnancy?

Accepted Answer

No, Convolvulus scammonia is absolutely contraindicated in pregnancy. The herb's powerful cathartic action can stimulate uterine contractions, potentially causing miscarriage or premature labor. The severe dehydration and electrolyte disturbances it produces pose additional risks to both maternal and fetal health. Evidence Level C. Pregnant individuals should avoid this herb entirely and consult a healthcare provider for safe alternatives.

Question 5

What are the side effects of Convolvulus scammonia?

Accepted Answer

Convolvulus scammonia produces severe gastrointestinal effects including violent cramping, profuse watery diarrhea, nausea, and vomiting. The intense purgation can cause dangerous dehydration, hypokalemia, and other electrolyte imbalances. In susceptible individuals, cardiovascular complications may arise from fluid and electrolyte losses. Historically regarded as one of the most powerful and potentially hazardous purgatives known. Evidence Level C.

Question 6

Who should not take Convolvulus scammonia?

Accepted Answer

Convolvulus scammonia is contraindicated in pregnancy, inflammatory bowel disease, intestinal obstruction, and cardiac conditions. It should be avoided by those with hemorrhoids, rectal bleeding, or any gastrointestinal inflammation. Children, elderly individuals, and patients with kidney disease face heightened risks from dehydration complications. Evidence Level C. Due to its severity, modern herbal practice rarely recommends this herb.

Convolvulus scammonia

Sources & Citations

Summary

Background

Traditional uses

Active compounds

Mechanism of action

Pregnancy & lactation

Evidence summary

PubMed sources

Government sources