You can make your own natural sexual Viagra by mixing some common fruits. All you’ll need for this formula is a watermelon and a lemon. Watermelon includes citrulline and lycopene, two molecules that are considered aphrodisiac. Start by chopping a watermelon and using a juicer to get about 1L of watermelon juice. Next, pour the juice into a saucepan. One thing you should know is that the white part of the watermelon is rich in citrulline. Squeeze a lemon into the watermelon juice and let the mixture boil until the volume comes down to about half of what it was. Let it cool for 1 hour and then store it in the fridge inside a clean container. Drink 2 tablespoons on an empty stomach early in the morning and before dinner.