Is there such a thing as bitter melon supplements? Aren’t melons only sweet-tasting in nature? No, because bitter melon does exist and so do the supplements. Melons are one of the healthiest snacks you can eat. They are low in fat and calories and they are loaded with vitamins. They are 90% made of water so they are one of the most thirst-quenching snacks around. But you can consume them in supplement form which would mean they would be more concentrated.