Dendrobine is an antipyretic plant alkaloid isolated from Dendrobium nobile.Dendrobine has pharmacologic effects that include analgesic (pain-killing) and anti-fever effects. There have been some claims that dendrobium extracts can contain phenylethylamines (PEAs), a type of stimulant that can have effects similar to those of amphetamines. So far, however, no reliable evidence indicates that PEAs occur naturally in any dendrobium species, which suggests some dendrobium-containing products may have been “spiked.” In addition to the effects mentioned above, dendrobine taken in sufficient amounts can slow breathing and heart rate and cause an unsafe drop in blood pressure. If dendrobium nobileis part of a proprietary blend, there is no way to tell how much dendrobine is present without laboratory testing. Therefore, dendrobium as a dietary supplement ingredient may pose health risks, including convulsions, seizures, or low blood pressure.