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Dietary supplement

Guava 4:1 Extract Powder Ingredients & Drug Interactions

by TerraVita Premium Collection

Guava 4:1 Extract Powder label
See full label image
Powder Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Guava 4:1 Extract Powder against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Guava 4:1 Extract Powder is a dietary supplement by TerraVita Premium Collection with 1 active ingredient. Its ingredients are commonly taken for diarrhea and digestive upset, blood sugar support, cholesterol support.Based on those ingredients, 86 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Guava Extract, Powder. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Guava 4:1 Extract Powder by TerraVita Premium Collection

Ask about any prescription or over-the-counter medication and we check it for interactions with Guava 4:1 Extract Powder by TerraVita Premium Collection — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Guava 4:1 Extract Powder by TerraVita Premium Collection

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Aug 6, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product is a single-ingredient supplement: guava extract in powder form, concentrated to a 4:1 ratio. There are no inactive ingredients (fillers or binders) listed.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Guava product and its label doesn't state a use — see Guava's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for guava extract isn't well established yet. For diarrhea, gingivitis, hypertension, and knee pain, we don't have reliable data to rate whether it works.

The effectiveness data we hold rates all of these as insufficient evidence, so we can't tell you what to expect.

The evidence, ingredient by ingredient Guava

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Guava fruit as food is generally safe, but this product is a concentrated leaf supplement, which is less studied. When taken by mouth, guava leaf extract may cause temporary belly pain or nausea in some people.

If applied to skin, it can cause contact dermatitis (irritation and rash) and may worsen eczema or other inflammatory skin conditions — one case involved a 17-year-old whose eczema flared after bathing with guava leaf tea before improving once he stopped. For breastfeeding, guava is considered likely safe based on the data we hold.

There's no safety rating on file for pregnancy, so talk with your doctor or pharmacist about whether it's appropriate for you if you're pregnant or planning to be.

Side effects, ingredient by ingredient Guava

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Guava.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 86 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take any antidiabetes drugs — including glimepiride (Amaryl) or others — double-check with your doctor or pharmacist before using this product. Altogether, these interactions span 86 individual medications.

The combination may cause low blood sugar, which could require a dose adjustment to your diabetes medication.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This powder is a concentrated guava extract with one main caution: if you take antidiabetes medication, the two together might lower your blood sugar too much. You'd need close monitoring and possibly a dose adjustment from your doctor.

For other uses like diarrhea or gum health, we don't yet have good evidence it works. Check your antidiabetes medications with your doctor or pharmacist before starting this product.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Apr 21, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Guava 4:1 Extract Powder, straight from the product label.

Brand TerraVita Premium Collection
Barcode (UPC) 064435203993
Net contents 4 Ounce(s)
Market status On market
Date entered into DSLD Apr 21, 2023
DSLD ID 289724
Product type Botanical
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Guava 4:1 Extract Powder by TerraVita Premium Collection, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
0.25 Teaspoon(s)
Maximum serving Sizes:
0.25 Teaspoon(s)
Servings per container
113
UPC/BARCODE
064435203993
IngredientAmount% DV
Guava Extract, Powder1000 mg--

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
FDA Statement of Identity

A Dietary Supplement

Brand IP Statement(s)

Copyright 2017 TerraVita - Distributed by ZooScape LLC, All Rights Reserved.

Suggested/Recommended/Usage/Directions

Directions Stir 1/4 of a teaspoon into a glass of water and consume 3 times daily, with meals.

General Statements

TerraVita is an exclusive line of premium natural products that use the finest, purest and most potent ingredients in the world. TerraVita's hallmarks are the highest possible standards of purity, potency, stability and freshness. All products are prepared with the greatest quality control, from raw materials through the entire manufacturing process, right up to the moment your product is sealed for freshness and shipped to you.

Please recycle!

FDA Disclaimer Statement

Statements not evaluated by FDA. Product not intended to diagnose, treat, cure, or prevent any disease.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Guava 4:1 Extract Powder by TerraVita Premium Collection label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Guava 4:1 Extract Powder label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Guava 4:1 Extract Powder by TerraVita Premium Collection

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size0.25 Teaspoon(s) Dosage formPowder Servings per container113 Amounts shown are per serving.

Guava Extract, Powder

Interacts with
86 drugs
1000 mg per serving

Guava is a tropical fruit tree whose leaves and fruit have a long history of folk use for diarrhea, blood sugar, and general wellness. The fruit is a...

Guava Extract, Powder monograph & interactions
Interaction report

Guava 4:1 Extract Powder by TerraVita Premium Collection Drug Interactions

Want to check YOUR meds against Guava 4:1 Extract Powder?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
86Drugs
86 Moderate

Ingredients driving the most interactions

Guava Extract, Powder 86

Individual Drug Interactions

The ingredients in Guava 4:1 Extract Powder interact with 86 drugs. Click any drug to see the details.

1 of the 1 ingredient in Guava 4:1 Extract Powder interact with drugs. Each result below shows which ingredient is responsible. Guava Extract, Powder

Each ingredient & the kinds of drugs it affects

For each ingredient in Guava 4:1 Extract Powder with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Guava Extract, Powder1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, concomitant use with antidiabetes drugs might have additive effects and increase the risk of hypoglycemia. Animal research shows that guava leaf extract or guava fruit can have hypoglycemic effects. Monitor blood glucose levels closely. Medication dose adjustments may be necessary. Some antidiabetes drugs include glimepiride (Amaryl), glyburide (Diabeta, Glynase PresTab, Micronase), insulin, metformin, pioglitazone (Actos), rosiglitazone (Avandia), and others.

Likelihood Possible Evidence D
Guava Extract, Powder full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Guava 4:1 Extract Powder, from the product label.

TerraVita Premium Collection

See all TerraVita Premium Collection products
Name
TerraVita Fine Whole Herbs
City
Brampton
State
Ontario
Pharmacist Counseling Corner

Guava 4:1 Extract Powder by TerraVita Premium Collection: Common Questions

Does Guava 4:1 Extract Powder by TerraVita Premium Collection interact with any medications?
Yes. Based on its ingredients, Guava 4:1 Extract Powder has a known interaction with 86 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Guava 4:1 Extract Powder contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
What side effects should I watch for?
Most common are temporary belly pain or nausea if you take it by mouth. If you apply it to your skin, watch for rash or irritation; people with eczema should be especially cautious since guava leaf extract can make that worse.
Is this safe while breastfeeding?
Yes, guava is considered likely safe during breastfeeding based on the data we hold.
Does it actually work for diarrhea, blood pressure, or joint pain?
We don't have reliable evidence to say whether it works for those uses yet. The studies aren't strong enough to rate it either way.
Is this the same as eating guava fruit?
No — this is a concentrated leaf extract supplement, which is much less studied than whole guava fruit. The safety data is clearer for eating the fruit itself.
Can I take this with my diabetes medication?
Only with your doctor's approval and close blood sugar monitoring. Guava can lower blood sugar on its own, so combining it with your medication might lower it too much and require a dose change.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Guava 4:1 Extract Powder is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Guava 4:1 Extract Powder label
Go deeper

The Full Monographs Behind Guava 4:1 Extract Powder’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Guava

Interacts with 86 drugs

Guava is a tropical fruit tree whose leaves and fruit have a long history of folk use for diarrhea, blood sugar, and general wellness. The fruit is a nutritious food rich in vitamin C, but e...

Read the full Guava monograph →
Sources

Sources & How We Checked

Guava 4:1 Extract Powder's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 7 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Guava 7 references
  1. Lozoya, X., Reyes-Morales, H., Chavez-Soto, M. A., Martinez-Garcia, Mdel C., Soto-Gonzalez, Y., and Doubova, S. V. Intestinal anti-spasmodic effect of a phytodrug of Psidium guajava folia in the treatment of acute diarrheic disease. J Ethnopharmacol 2002 PubMed
  2. Obi M, Miyazaki Y, Yokozeki H, Nishioka K. Allergic contact dermatitis due to guava tea. Contact Dermatitis. 2001;44(2):116-7. PubMed
  3. Singh RB, Rastogi SS, Singh R, Ghosh S, Niaz MA. Effects of guava intake on serum total and high-density lipoprotein cholesterol levels and on systemic blood pressure. Am J Cardiol. 1992;70(15):1287-91. PubMed
  4. Nayak N, Varghese J, Shetty S, et al. Evaluation of a mouthrinse containing guava leaf extract as part of comprehensive oral care regimen- a randomized placebo-controlled clinical trial. BMC Complement Altern Med. 2019;19(1):327. PubMed
  5. Kakuo S, Fushimi T, Kawasaki K, Nakamura J, Ota N. Effects of Psidium guajava Linn. Leaf extract in Japanese subjects with knee pain: a randomized, double-blind, placebo-controlled, parallel pilot study. Aging Clin Exp Res. 2018;30(11):1391-1398. PubMed
  6. Gutiérrez RM, Mitchell S, Solis RV. Psidium guajava: a review of its traditional uses, phytochemistry and pharmacology. J Ethnopharmacol. 2008;117(1):1-27. PubMed
  7. Doubova SV, Morales HR, Hernández SF, et al. Effect of a Psidii guajavae folium extract in the treatment of primary dysmenorrhea: a randomized clinical trial. J Ethnopharmacol. 2007;110(2):305-10. PubMed

See these in context on the Guava monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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