Tomatoes are a good source of vitamin C and a source of vitamin A (from beta-carotene) and 
contain a dietary significant amount of potassium. Tomatoes contain many different phytonutrients; 
the most well-known being the carotenoid lycopene, responsible for the red colour. 

 

It is of interest as it is found in few other foods and is
being studied for a range of potential health benefits. 
Other carotenoids, particularly beta-carotene, are also found together with phenolic acids and flavonoids.