Synephrine hydrochloride is commonly used as a dietary supplement for weight management and fat loss due to its ability to enhance metabolic rate and promote thermogenesis. It is often included in formulations aimed at reducing body fat and improving energy levels, particularly in products targeting athletes or individuals seeking weight loss. Additionally, it is utilized as a nasal decongestant in some over-the-counter medications, helping to alleviate symptoms of colds and allergies by constricting blood vessels in the nasal passages. Its stimulant properties also make it a component in certain pre-workout supplements to boost focus and physical performance. However, its use should be approached with caution, especially by individuals with cardiovascular conditions, due to its potential to increase heart rate and blood pressure.