... Guava leaves have antioxidant action (Chen & Yen, 2007), antiageing properties (Edwin et al., 2007), antimicrobial effects (Buvaneswari, 2011). Reported pharmacological activities include diarrhoea (Ojewole et al., 2008), dysentery, gastrointestinal disorders (Lozoya et al., 2002), infantile enteritis caused by Rotavirus (Wei et al., 2000), diabetes (Cheng & Yang, 1983;Oh et al., 2005), obesity (Deguchi & Miyzaki, 2010), high cholesterol (Singh et al.,1993), bronchitis, laryngitis (Jaiarj, 1999), acne and skin infection (Qadan et al., 2005), wounds, boils, bites, soft tissue infectious site (Abubakar, 2009), hair loss (Sim et al., 2016), allergy (Han et al., 2011), asthma (Batick, 1984), epilepsy (Meckes et al., 1996), fever (Olajide et al., 1999), flu-H1N1, (Sriwilaijaroen et al., 2012), malaria (Nundkumar & Ojewole, 2002), periodontal diseases (Ravi & Divyashree, 2014), rheumatism (Ayensu, 1978). The leaves of Psidium guajava have anti-inflammatory and analgesic effects (Jewole et al., 2006), liver protective activity (Roy et al., 2006), antihypertensive and cardio protective (Sakanashi et al., 2003), anti-ulcer (Edwin et al., 2007), anti-stress (Lakshmi & Sudhakar, 2009), immuno-stimulatory activity (Laily et al., 2015); the anticancer effects of guava (breast, cervix, colon, mouth, prostate, stomach, thyroid) have variously been reported (Lee & Park, 2010;Chen et al., 2010). ...