Guava (Psidium guajava L.) is a tropical fruit indigenous to region of South America. This plant mainly relates to the Myrtaceae family as well-known plant. Guava is a more nutritious alternative since, unlike the rest of the fruit, it is not chemically processed. Guava is widely known for its culinary value. Around the world, it has commonly been utilized as a homoeopathic medicine to cure a wide range of illnesses. Tannins, quercetin, ursolic acid, saponins, lectins, beta-sitosterol, guajanoic acid, carotenoid, amritoside and uvanol are some of the useful chemical constituents in guava. Among its many health benefits, guava has antiseptic, anti-viral, against tussive, against inflammation, against cancer, against hyperglycaemia, as well as anti-oxidant qualities. Approximately 150 guava species are found worldwide, with the common guava, peer guava, cattley guavas being most popular ones. According to guava's nutrient profile, it is high in specific elements, such as protein, carbohydrates, minerals and vitamins, which improve the well-being of people. Guava includes several pharmacologically functional elements that are in charge of a range of physiochemical actions, according to multiple research projects, effects that are covered in more detail in the review, including antipyretic medication, cardiogenic, liver protective, immune-modulation, spasmolytic, and muscular actions.