Black horehound (Ballota nigra): traditional calming and digestive uses, preparation forms, recipes, drug interactions and contraindications in pregnancy.

Gypsywort (Lycopus europaeus): traditional thyroid-related uses, preparation forms, drug interactions, and contraindications of this European herb.

Tea tree (Melaleuca alternifolia): traditional uses of melaleuca oil on the skin, preparation methods, safe dilution and contraindications.

Sarsaparilla (Smilax ornata): traditional uses of the root, preparation methods, phytochemistry, contraindications in pregnancy and care with anticoagulants.

English oak (Quercus robur): traditional uses of its tannin-rich bark, preparation methods, recipes, contraindications and essential safety precautions.