Many people tolerate normal levels of terpenes, however, concentrated terpenes can cause irritation of the respiratory tract and/or skin, as well as headaches, nausea, and allergies, for some people. Those who use concentrates that have been produced with low quality methods or materials or who use large quantities of concentrates are at greater risk. Therefore, it is important to start out low, then gradually increase your dosage while keeping track of the changes you feel.
