Guayabilla (Wild Guava)
Psidium guineense
About Guayabilla (Wild Guava)
Guayabilla (Wild Guava) (Psidium guineense) is a herb used in the Andean & Incan Medicine tradition to help with Diarrhea, Diabetes, Immune Support, and Digestive Issues. The aerial parts and leaves are the parts traditionally used, taken internally.
Botanical background
Psidium guineense is a species of guava.
Source: Wikipedia, via iNaturalist
Parts used
Conditions addressed
Tea / Infusion
- Steep 1–2 tsp of dried Guayabilla (Wild Guava) in freshly boiled water for 5–10 minutes.
- Cover while steeping.
- Strain and drink.
Tincture
- Pack dried Guayabilla (Wild Guava) into a jar and cover with 40–60% alcohol.
- Seal and steep for 4–6 weeks, shaking daily.
- Strain and store in a dark dropper bottle.
Powder / Capsule
- Grind dried Guayabilla (Wild Guava) into a fine powder.
- Fill size 00 capsules or stir into smoothies or honey.
Pregnancy, Breastfeeding & Children
No herb-specific pregnancy/child safety research is documented for Guayabilla (Wild Guava) in our references — the guidance below is based on its general effect category, not research on Guayabilla (Wild Guava) itself. Always confirm with a midwife, doctor, or pediatrician.
Pregnancy
Use CautionThis herb may affect blood sugar levels. Given the importance of stable glucose control in pregnancy, herbs in this category are generally used only under medical guidance, particularly alongside any gestational diabetes monitoring — this is a general, mechanism-based caution, not herb-specific research.
Breastfeeding
Use CautionGenerally used cautiously during breastfeeding, particularly if managing blood sugar medically.
Children
Use CautionChildren are more sensitive to blood-sugar swings given their smaller body size — these herbs are generally used cautiously and under guidance.
Contraindications
- Autoimmune conditions (lupus, MS, RA) — may overstimulate immune response
- Diabetes medications — may enhance hypoglycaemic effect; monitor blood glucose closely
Warnings
⛔ Diabetes Medications
May enhance the blood sugar–lowering effect of insulin or oral diabetes medications. Monitor blood glucose closely.
⚠️ Allergic Reactions
Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.
⚠️ Not Medical Advice
This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.
Drug & herb interactions
May affect blood sugar
Watch for: Insulin and oral diabetes medications (metformin, sulfonylureas)
Additive blood-sugar-lowering effects can risk hypoglycemia — monitor glucose closely.
May affect immune activity
Watch for: Immunosuppressants (for transplant or autoimmune conditions)
Immune-stimulating herbs can work against immunosuppressive therapy.
Where to find in nature
Native region
Andes Mountains — Peru, Bolivia, Ecuador, Chile
Climate
High-altitude tropical
Habitat
Andean highlands (altiplano), cloud forests, and valley farmland of the Andes
🌿 To see Guayabilla (Wild Guava) growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier — never consume a plant you are not 100% certain of.
Where to buy
In store
- Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
- Naturopathic clinics and integrative medicine practices
- Specialist herbal apothecaries and herbalist practices
- Farmers markets with herb vendors
Online
iHerb
Wide selection of standardised extracts, capsules, and powders with lab testing
Mountain Rose Herbs
Premium bulk dried herbs — certified organic, ethically sourced
Starwest Botanicals
Large selection of certified organic bulk herbs and powders
Herb Pharm
High-quality liquid extracts and tinctures, rigorous quality standards
Amazon
Convenient — verify brand certifications and check third-party testing
Etsy
Small-batch artisan herbalists, hand-harvested and wildcrafted herbs
Quality tips
When buying Guayabilla (Wild Guava), look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products — quality varies enormously.