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Dietary supplement

Restenoril Ingredients & Drug Interactions

by Cardiovascular Research

Restenoril label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Restenoril 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

Restenoril is a dietary supplement by Cardiovascular Research with 1 active ingredient. Its ingredients are commonly taken for common cold and flu symptoms, upper respiratory infections, sore throat.Based on those ingredients, 413 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Andrographis paniculata. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Restenoril by Cardiovascular Research

Ask about any prescription or over-the-counter medication and we check it for interactions with Restenoril by Cardiovascular Research — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Restenoril by Cardiovascular Research

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 Sep 10, 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.

Restenoril is a single-ingredient supplement: andrographis paniculata, a plant extract traditionally used in herbal medicine. The capsule itself contains gelatin, methocel, and potassium sorbate as inactive ingredients.

Does it work?

Moderate evidence
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

This product doesn't appear to be marketed for a specific use, so we graded Andrographis's overall clinical evidence instead.

Moderate

Some clinical evidence supports Andrographis for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Ulcerative colitis — rated "Possibly Effective" (Natural Medicines).
  • On file: Osteoarthritis — rated "Possibly Effective" (Natural Medicines).
  • On file: Tonsillopharyngitis — rated "Possibly Effective" (Natural Medicines).

Andrographis carries a "possibly effective" rating for three conditions: ulcerative colitis (inflammatory bowel disease), tonsillopharyngitis (sore throat from infection), and osteoarthritis (joint wear and tear). For familial Mediterranean fever, the evidence is too weak to rate.

These ratings reflect that some clinical trial data exist but aren't yet strong or consistent enough to confirm the herb really works for these uses.

The evidence, ingredient by ingredient Andrographis

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.

Andrographis is generally well tolerated in the short term, but the long-term safety profile and the quality of supplement products aren't well established. The most common side effects at standard doses are abdominal discomfort, altered taste, diarrhea, dizziness, fatigue, headache, nausea, vomiting, itching (pruritus), rash, and hives (urticaria).

Higher doses — reaching or exceeding 5–10 mg/kg of the active ingredient andrographolide — and treatment longer than 14 days increase the risk of adverse effects. Serious allergic reactions, including anaphylaxis, are rare but have been reported.

Skin reactions are frequent and can range from simple rash to severe conditions like Stevens-Johnson syndrome. During pregnancy, the safety data advises against use because of theoretical and animal-study concerns about reproductive effects.

There isn't enough safety information to know whether it's safe while breastfeeding, so avoid it during lactation.

Side effects, ingredient by ingredient Andrographis

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 — Andrographis.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs.
  • For scale: 413 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.

Before taking Restenoril, double-check with your own doctor or pharmacist if you take blood pressure-lowering medications (antihypertensives) — andrographis may lower your blood pressure further. Also confirm if you're on blood thinners (anticoagulants or antiplatelets), since bleeding risk may increase, or if you take immune-suppressing drugs.

There are also minor interactions with etoricoxib, celecoxib, and glipizide that you should discuss.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

Andrographis may help with sore throat, ulcerative colitis, or joint pain, but the evidence is still developing. If you take blood pressure medication, blood thinners, or immune-suppressing drugs, you'll need to clear this with your own doctor or pharmacist before starting — the interaction risks are real.

Pregnant and nursing people should not use it. Talk it over with your healthcare provider.

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 Mar 22, 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 Restenoril, straight from the product label.

Brand Cardiovascular Research
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Mar 22, 2023
DSLD ID 283461
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Women (not pregnant or lactating), No Allergies
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 Restenoril by Cardiovascular Research, 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:
1 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
60
IngredientAmount% DV
Andrographis paniculata500 mg--

Other ingredients: Gelatin, Methocel, Potassium Sorbate

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

Formula

Restenoril is an herbal supplement derived from the rare Burmese plant, Andrographis paniculata. This phytonutrient contains andro-grapholides.

Andrographolide

Formulation

Free of corn, soy, yeast, wheat, egg and other common allergens.

Precautions

This product should not be used during pregnancy or lactation.

FDA Disclaimer Statement

This product has not been evaluated by the FDA. This product is not intended to diagnose, cure, treat or prevent any disease.

General Statements

Ecological Formulas

Suggested/Recommended/Usage/Directions

Directions Take one or two capsules daily, or as directed by a physician.

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

See for yourself

Restenoril by Cardiovascular Research label

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

Restenoril 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 Restenoril by Cardiovascular Research

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.

Andrographis paniculata

Interacts with
413 drugs
500 mg per serving

Andrographis is a bitter Asian herb traditionally used for colds, flu, and infections, and some studies suggest it may ease cold symptoms and shorten...

Andrographis paniculata monograph & interactions

Other (inactive) ingredients: Gelatin, Methocel, Potassium Sorbate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Restenoril by Cardiovascular Research Drug Interactions

Want to check YOUR meds against Restenoril?

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
413Drugs
408 Moderate 5 Minor

Ingredients driving the most interactions

Andrographis paniculata 413

Individual Drug Interactions

The ingredients in Restenoril interact with 413 drugs. Click any drug to see the details.

1 of the 1 ingredient in Restenoril interact with drugs. Each result below shows which ingredient is responsible. Andrographis paniculata

Each ingredient & the kinds of drugs it affects

For each ingredient in Restenoril 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.

Andrographis paniculata6 drug types · 413 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, andrographis might increase the risk of bleeding when used with anticoagulant or antiplatelet drugs.
Animal and laboratory studies suggest that andrographis has antiplatelet effects.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, andrographis might increase the risk of hypotension when used with antihypertensive drugs.
Animal research suggests that andrographis has hypotensive effects.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, andrographis might interfere with the effects of immunosuppressive drugs.
Laboratory research suggests that andrographolide has immunostimulant activity.

Likelihood Possible Evidence D
Celecoxib (Celebrex)

Theoretically, andrographis extract might increase the maximum concentration and time to peak concentration of celecoxib. The clinical significance of these changes is unclear.
Animal research suggests that andrographis extract taken orally increases the maximum concentration and time to peak concentration of celecoxib but does not appear to impact the area under the curve.

Likelihood Possible Evidence D
Etoricoxib (Arcoxia)

Theoretically, andrographis might decrease the absorption of etoricoxib, although the clinical significance is unclear.
Animal research shows that andrographis extract, or the constituent andrographolide, taken orally with etoricoxib decreases the bioavailability of etoricoxib. However, this reduced bioavailability is not correlated with a reduction in the anti-inflammatory effects of etoricoxib in arthritic mice models. The clinical significance of this interaction is unclear.

Likelihood Possible Evidence D
Glipizide (Glucotrol)

Theoretically, andrographis extract might increase the maximum concentration and area under the curve of glipizide; however, opposite effects are seen with the constituent, andrographolide. The clinical significance of this interaction is unclear.
Animal research suggests that andrographis extract taken orally with glipizide in diabetes-induced rats increases the maximum concentration and area under the curve of glipizide. However, the opposite effect is seen with the constituent, andrographolide, in which the maximum concentration and area under the curve are decreased when taken with glipizide.

Likelihood Possible Evidence D
Andrographis paniculata full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Restenoril, from the product label.

Cardiovascular Research

See all Cardiovascular Research products
Name
Cardiovascular Research, LTD.
Street Address
1061-B Shary Circle
City
Concord
State
CA
ZipCode
94518
Pharmacist Counseling Corner

Restenoril by Cardiovascular Research: Common Questions

Does Restenoril by Cardiovascular Research interact with any medications?
Yes. Based on its ingredients, Restenoril has a known interaction with 413 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Restenoril 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 is andrographis, and what is it used for?
Andrographis paniculata is a plant extract used traditionally in herbal medicine. In supplement form, it's marketed for support related to sore throats, inflammatory bowel conditions, and joint health. The evidence for these uses is still developing.
Can I take Restenoril if I'm pregnant or breastfeeding?
No. The safety data advises against andrographis in pregnancy because of concerns seen in animal studies about reproductive effects. There's also not enough safety information during breastfeeding, so it's best to avoid it while nursing. Talk with your doctor if you're planning pregnancy or are lactating.
What side effects might I notice?
The most common ones are stomach discomfort, changes in taste, diarrhea, dizziness, fatigue, headache, nausea, vomiting, itching, rash, and hives. Headache and fatigue are more likely at higher doses. Serious allergic reactions are rare but possible.
How long is it safe to take Restenoril?
Short-term use is generally well tolerated, but the long-term safety isn't well established. The evidence suggests that doses exceeding 5–10 mg/kg of the active ingredient and treatment beyond 14 days increase the risk of side effects.
Does andrographis interact with many medications?
Yes, andrographis has documented interactions with several medication types — most importantly blood pressure drugs, blood thinners, and immune-suppressing drugs. It also has minor interactions with specific arthritis and diabetes medications. Check your medications with your doctor or pharmacist before starting.

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

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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.

Restenoril label
Go deeper

The Full Monographs Behind Restenoril’s Ingredients

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

Herb & supplement monograph

Andrographis

Interacts with 413 drugs

Andrographis is a bitter Asian herb traditionally used for colds, flu, and infections, and some studies suggest it may ease cold symptoms and shorten how long they last. The evidence is limi...

Read the full Andrographis monograph →
Sources

Sources & How We Checked

Restenoril'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 26 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.

Andrographis 26 references
  1. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  2. Thamlikitkul V, Dechatiwongse T, Theerapong S, et al. Efficacy of Andrographis paniculata, Nees for pharyngotonsillitis in adults. J Med Assoc Thai 1991;74:437-42.
  3. Zhang CY, Tan BK. Mechanisms of cardiovascular activity of Andrographis paniculata in the anaesthetized rat. J Ethnopharmacol 1997;56:97-101. PubMed
  4. Zhao HY, Fang WY. Antithrombotic effects of Andrographis paniculata nees in preventing myocardial infarction. Chin Med J (Engl) 1991;104:770-5.
  5. Amroyan E, Gabrielian E, Panossian A, et al. Inhibitory effect of andrographolide from Andrographis paniculata on PAF-induced platelet aggregation. Phytomedicine 1999;6:27-31. PubMed
  6. Zhang C, Kuroyangi M, Tan BK. Cardiovascular activity of 14-deoxy-11,12-didehydroandrographolide in the anaesthetised rat and isolated right atria. Pharmacol Res 1998;38:413-7. PubMed
  7. Puri A, Saxena R, Saxena RP, et al. Immunostimulant agents from Andrographis paniculata. J Nat Prod 1993;56:995-9. PubMed
  8. Melchoir J, Spasov AA, Ostrovskij OV, et al. Double-blind, placebo-controlled pilot and phase III study of activity of standardized Andrographis paniculata Herba Nees extract fixed combination (Kan Jang) in the treatment of uncomplicated upper-respirator
  9. Calabrese C, Berman SH, Babish JG, et al. A phase I trial of andrographolide in HIV positive patients and normal volunteers. Phytother Res 2000;14:333-8. PubMed
  10. Gabrielian ES, Shukarian AK, Goukasova GI, et al. A double blind, placebo-controlled study of Andrographis paniculata fixed combination Kan Jang in the treatment of acute upper respiratory tract infections including sinusitis. Phytomedicine 2002;9:589-97 PubMed
  11. Poolsup N, Suthisisang C, Prathanturarug S, et al. Andrographis paniculata in the symptomatic treatment of uncomplicated upper respiratory tract infection: systematic review of randomized controlled trials. J Clin Pharm Ther 2004;29:37-45. PubMed
  12. Coon JT, Ernst E. Andrographis paniculata in the treatment of upper respiratory tract infections: a systematic review of safety and efficacy. Planta Med 2004;70:293-8.
  13. Kligler, B., Ulbricht, C., Basch, E., Kirkwood, C. D., Abrams, T. R., Miranda, M., Singh Khalsa, K. P., Giles, M., Boon, H., and Woods, J. Andrographis paniculata for the treatment of upper respiratory infection: a systematic review by the natural standa
  14. Burgos, R. A., Hancke, J. L., Bertoglio, J. C., Aguirre, V., Arriagada, S., Calvo, M., and Caceres, D. D. Efficacy of an Andrographis paniculata composition for the relief of rheumatoid arthritis symptoms: a prospective randomized placebo-controlled tria
  15. Saxena, R. C., Singh, R., Kumar, P., Yadav, S. C., Negi, M. P., Saxena, V. S., Joshua, A. J., Vijayabalaji, V., Goudar, K. S., Venkateshwarlu, K., and Amit, A. A randomized double blind placebo controlled clinical evaluation of extract of Andrographis pa
  16. Tang, T., Targan, S. R., Li, Z. S., Xu, C., Byers, V. S., and Sandborn, W. J. Randomised clinical trial: herbal extract HMPL-004 in active ulcerative colitis - a double-blind comparison with sustained release mesalazine. Aliment.Pharmacol Ther 2011;33(2) PubMed
  17. Sandborn, W. J., Targan, S. R., Byers, V. S., Rutty, D. A., Mu, H., Zhang, X., and Tang, T. Andrographis paniculata extract (HMPL-004) for active ulcerative colitis. Am J Gastroenterol. 2013;108(1):90-98. PubMed
  18. Melchior, J., Palm, S., and Wikman, G. Controlled clinical study of standardized Andrographis paniculata extract in common cold - a pilot trial. Phytomedicine. 1997;3(4):315-318. PubMed
  19. Balap A, Atre B, Lohidasan S, et al. Pharmacokinetic and pharmacodynamic herb-drug interaction of Andrographis paniculata (Nees) extract and andrographolide with etoricoxib after oral administration in rats. J Ethnopharmacol. 2016 May 13;183:9-17. PubMed
  20. Bertoglio JC, Baumgartner M, Palma R, et al. Andrographis paniculata decreases fatigue in patients with relapsing-remitting multiple sclerosis: a 12-month double-blind placebo-controlled pilot study. BMC Neurol. 2016; 16(1):77. PubMed
  21. Suwankesawong W, Saokaew S, Permsuwan U, et al. Characterization of hypersensitivity reactions reported among Andrographis paniculata users in Thailand using Health Product Vigilance Center (HPVC) database. BMC Complement Altern Med. 2014; 14:515. PubMed
  22. Ciampi E, Uribe-San-Martin R, Cárcamo C, et al. Efficacy of andrographolide in not active progressive multiple sclerosis: a prospective exploratory double-blind, parallel-group, randomized, placebo-controlled trial. BMC Neurol 2020;20(1):173. PubMed
  23. Worakunphanich W, Thavorncharoensap M, Youngkong S, Thadanipon K, Thakkinstian A. Safety of Andrographis paniculata: A systematic review and meta-analysis. Pharmacoepidemiol Drug Saf 2021;30(6):727-739.
  24. More SJ, Tandulwadkar SS, Balap AR, Lohidasan S, Sinnathambi A, Mahadik KR. Effect of Andrographis paniculata extract and Andrographolide on the pharmacokinetics of Aceclofenac and Celecoxib in rats. Futur J Pharm Sci. 2023;9(1):1. PubMed
  25. Sundhani E, Nugroho AE, Nurrochmad A, Puspitasari I, Amalia Prihati D, Lukitaningsih E. Pharmacokinetic Herb-Drug Interactions of Glipizide with Andrographis paniculata (Burm. f.) and Andrographolide in Normal and Diabetic Rats by Validated HPLC Method. M PubMed
  26. Shang YX, Shen C, Stub T, et al. Adverse Effects of Andrographolide Derivative Medications Compared to the Safe use of Herbal Preparations of Andrographis paniculata: Results of a Systematic Review and Meta-Analysis of Clinical Studies. Front Pharmacol 20 PubMed

See these in context on the Andrographis 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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