A species of basil that grows in tropical areas. Holy basil has a stronger scent than sweet basil and other common versions of the herb, and there is some evidence that it is an effective anti-inflammatory. Holy basil also appears to act as a painkiller, and the essential oil of the plant may have heart-protective qualities.

Holy basil is safe, but like all basil species, it can cause mild irritation for users with skin sensitivities. People with blood clotting disorders should check with their physicians before using lubricants and massage oils with this ingredient.