Ocimum basilicum Egypt, Basil is considered helpful for mental and physical fatigue, aids in mental alertness, concentration A good wake up oil, used in moderation. Helps ease sinus congestion. and headaches. Helpful against colds and congestion, as well as easing muscular aches and pains. Can reduce menstrual cramps. Avoid use if pregnant or if subject to seizures. I find Basil and Orange to be a good blend; it also blends well with Rosemary or Geranium.