Purple Loosestrife vs Psidium Guajava Leaf

Side-by-side comparison of medicinal herbs

Herb

Purple Loosestrife

Lythrum salicaria

Digestive

Psidium Guajava Leaf

Psidium guajava

Digestive

⚠️ Pregnancy & Nursing Warnings

Purple Loosestrife

❌ Not recommended in pregnancy

✅ Generally safe while nursing

Psidium Guajava Leaf

✅ Generally safe in pregnancy

✅ Generally safe while nursing

Description

European perennial wetland plant with striking purple flowers; powerful astringent used across European folk medicine for diarrhea and wounds.

Leaves of the guava tree used widely in traditional medicine across the tropics for diarrhea, wounds, and diabetes management.

Active Compounds

tannins, ellagitannins, flavonoids, phenolic acids, mucilage

quercetin, guaijaverin, leucocyanidin, catechins, essential oils

Traditional Uses

Diarrhea and dysentery in European and North American medicine, Wound healing, Diabetes management in folk use, Typhoid fever in historical European medicine

diarrhea, wound healing, diabetes, toothache, skin infections

Modern Uses

Astringent, Antibacterial, Wound healing, Anti-inflammatory

antidiarrheal, antimicrobial, antidiabetic, wound healing

Adult Dosage

2–4 g dried herb as tea; 2–4 mL tincture 3x daily

5–10g dried leaves as tea 3x daily

Contraindications

Pregnancy, Constipation

constipation, pregnancy high doses

Side Effects

Constipation with overuse, Strong astringency can cause nausea

constipation with overuse, nausea

Drug Interactions

0 known interactions

Reviewed by: HerbAlly Editorial Team, Medical herbalists and healthcare professionals

Sources: WHO Monographs · NCCIH · PubMed · Commission E

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