How much melatonin does a banana have?

Bananas contain small amounts of melatonin, typically ranging from about 0.01 to 0.1 micrograms per gram of fruit. This means that an average banana might have around 0.5 to 3 micrograms of melatonin, depending on its size and ripeness. However, the levels are quite low compared to melatonin supplements, which usually contain several milligrams per dose. Therefore, while bananas can contribute to your overall melatonin intake, they are not a significant source.