Eucalyptus oil, peppermint oil, and rosemary oil are best for cough and congestion as they assist melatonin production in your body, which further helps to regulate the circadian rhythm in your body.
Eucalyptus oil, peppermint oil, and rosemary oil are best for cough and congestion as they assist melatonin production in your body, which further helps to regulate the circadian rhythm in your body.