Guava (Psidium guajava)

Overview Botanical name: Psidium guajava L. Family: Myrtaceae Common names: Guava, apple guava, tropical guava. Native range: Tropical America (likely Central America & southern Mexico); now widely cultivated throughout the tropics & subtropics. Plant type: Small evergreen tree or shrub. Morphological Characteristics Height: Typically 2–10 meters tall. Bark: Smooth, copper-colored, exfoliating in thin flakes. Leaves: Opposite, simple, oblong–elliptic, aromatic when crushed. Flowers: White, ~2–3 cm, with numerous stamens. Fruit: Ovoid–round berry, green to yellow when ripe, with pink, red, or white flesh and many small edible seeds.

✅ Antidiarrheal — Guava leaves have strong astringent tannins that reduce intestinal secretions and slow down bowel movements, making them effective in managing acute diarrhea and dysentery in traditional medicine. ✅ Antimicrobial — Both the leaves and bark exhibit antibacterial, antiviral, and antifungal activity, thanks to phenolic compounds and flavonoids, which help inhibit pathogens like E. coli, Salmonella, and Staphylococcus. ✅ Antioxidant — Guava fruit is exceptionally rich in vitamin C, carotenoids, and polyphenols, which neutralize free radicals, reduce oxidative stress, and protect cells from damage. ✅ Anti-inflammatory — Extracts from the leaves and fruit modulate inflammatory pathways, helping to alleviate swelling, pain, and tissue irritation in both internal and external applications. ✅ Wound healing — The astringent and antimicrobial properties of crushed guava leaves support the healing of cuts, ulcers, and skin infections by promoting clotting and preventing secondary infections. ✅ Blood sugar regulation — Guava leaf extracts have been shown to reduce postprandial blood glucose by inhibiting carbohydrate absorption and improving insulin sensitivity, offering potential support for diabetes management. ✅ Cholesterol-lowering — Some studies suggest that regular consumption of guava leaf tea may modestly lower total and LDL cholesterol while improving HDL levels. ✅ Respiratory relief — Guava leaves are used traditionally for cough, sore throat, and bronchitis because of their soothing, antimicrobial, and mild expectorant effects. ✅ Digestive support — The fiber in guava fruit and the tannins in the leaves support healthy digestion, relieve constipation, and protect the gut lining. ✅ Immune enhancement — The high vitamin C and bioactive compounds in guava fruit boost immune defense, support collagen production, and enhance resistance to infections.

Purpose: Antidiarrheal, antimicrobial, blood sugar regulation, respiratory support. Dosage: Use 5–7 fresh or dried guava leaves (roughly 2–4 grams dried) per serving. How to prepare: Rinse the leaves. Boil them in ~250–300 mL of water for 10–15 minutes. Strain and drink while warm. Frequency: Take 2–3 times daily for acute symptoms (e.g., diarrhea) or once daily for maintenance (e.g., blood sugar support).