Thyme (Thymus vulgaris): traditional properties, tea preparation, essential oil, and contraindications for internal use and pregnancy.

Chaste Tree (Vitex agnus-castus): traditional uses for PMS and the menstrual cycle, preparation methods, and hormonal contraindications.

Lemon Balm (Melissa officinalis): traditional calming, digestive uses, tea and tincture preparation, contraindications in pregnancy and thyroid disorders.

Oregano (Origanum vulgare): aromatic Lamiaceae herb; see traditional uses, tea and oil preparation, synergies, and contraindications.

Basil (Ocimum basilicum): traditional uses, tea and oil preparation, studied properties, and pregnancy contraindications explained here.