No! Herbs made properly can be stored away from heat and light. But, if you live in a hot and humid climate, store your herbal products in the refrigerator. Also, to protect them from the refrigerator’s light, place them in a brown paper bag. Do not store your herbal products in your car or anywhere with extreme heat.
Also, never directly heat your herbal liquids. Herbs are heat-sensitive and should not be added to anything hot unless recommended.