Primavera Peppermint Essential Oil Demeter/Organic* Peppermint is used in naturopathy - it is used for stomach, colds and muscle aches. Peppermint Organic Essential Oil is an invigorating oil. The crystal-fresh, cool and activating scent of Primavera Peppermint Oil is refreshing and energising in the case of lethargy and tension. Also used for weakness, lethargy, nausea, fevers, headaches and nausea. Vegan.