Avoid

⛔ Best avoided

Comfrey (by mouth)

Also called: symphytum

A plant once used for wounds and joints.

Why people take it
Joints, bruises.
What the evidence says
Creams may help bruises.
How it is usually taken
Not recommended at any amount; see the warning above.
Be careful
Taken by mouth it causes serious liver damage. Never swallow it.
Medicines it can interact with
Dangerous interactions are reported; do not combine with any medicine.

Other avoid

Common questions

What is Comfrey?

A plant once used for wounds and joints.

Why do people take Comfrey?

Joints, bruises.

Does Comfrey work?

Creams may help bruises.

How much Comfrey do people take?

Not recommended at any amount; see the warning above.

Is Comfrey safe?

Taken by mouth it causes serious liver damage. Never swallow it.

Does Comfrey interact with medicines?

Dangerous interactions are reported; do not combine with any medicine.

Sources and further reading

Last reviewed 31 October 2026. Written by Satya Babu.

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