Recipe
Comfrey leaf decoction for external compressing
- Herb:
- Symphytum officinale Symphytum officinale
- Method:
- Decoction
- Plant part:
- Leaf
About 20 minAdvancedRecipe science profile
Procedure
- For about 500 ml water use 2 tsp dried leaf (from a verified source only).
- Simmer 10–15 minutes under a lid, strain, and cool to a comfortable temperature.
- Soak a clean cloth in the liquid and apply to intact skin for 10–20 minutes; do not drink the preparation.
Extraction
- Herb:
- poměry dle kroků receptu na kartě
- Solvent:
- mediální složení (voda, alkohol, olej, med…) viz jednotlivé kroky
- Shelf life:
- po přípravě uchovávej hygienicky a podle typu výrobku (chlad, světlo, alkohol)
- Target compounds:
- orientační domácí extrakce — profil závisí na teplotě, času řezu a poměrech
Notes
Comfrey contains pyrrolizidine alkaloids — internal use is not appropriate; follow warnings on the herb card and EMA monographs. External and short-term only.
Why it works
European texts often focus on comfrey root for assessed traditional external use; leaf material is less standardised. Pyrrolizidine alkaloids are the main safety concern with ingestion and prolonged heavy exposure. A short, dilute application to intact skin as a compress is not the same pharmacokinetic route as drinking the decoction — still follow warnings on the herb card and do not drink these preparations.
Literature
- Vyhledávání studií (PubMed apod.) — Konkrétní vědecká tvrzení ověř na kartě byliny a v primární literatuře.
Related
Symphytum officinale — Herb card
Decoction — Processing method detail