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Synephrine is a naturally occurring compound found in bitter orange (Citrus aurantium) and other citrus fruits. It is chemically similar to ephedrine and is often used in weight loss supplements and energy-boosting products due to its stimulant properties.

Key Points:

• Chemical Class: Alkaloid, similar to ephedrine.

• Mechanism of Action: Synephrine primarily acts as a stimulant by increasing the release of norepinephrine, a neurotransmitter that can boost heart rate, metabolism, and fat burning. It is thought to have a milder effect compared to ephedrine but can still have noticeable thermogenic (heat-producing) effects.