Bupropion HCL is a medicinal grade pharmaceutical substance which is used for the medications that helps in the treatment of the major depressive disorder and to support smoking cessation. It has a chemical formula of C₁₃H1₈ClNO with a molecular mass of 239.74 grams per mol. The drugs formed by using this compound are highly active in nature which may result in side effects such as dry mouth, sore throat, dizziness, nausea, vomiting, weight loss, constipation, trouble sleeping, increased sweating and shaking.