(-)-Limonene ((S)-(-)-Limonene) is a monoterpene found in many pine-needle oils and in turpentine. (-)-Limonene can induce a mild bronchoconstrictive effect[1].
[1]. Larsen ST, et al. Effects of R-(+)- and S-(-)-limonene on the respiratory tract in mice. Hum Exp Toxicol. 2000 Aug;19(8):457-66.
















