Hempnettle + Guaifenesin, Phenylephrine, Phenylpropanolamine
Guaifenesin, Phenylephrine, Phenylpropanolamine brand names: Dura Gest, Entex.
We found no known interaction between Hempnettle and Guaifenesin, Phenylephrine, Phenylpropanolamine in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.
Hempnettle and Guaifenesin, Phenylephrine, Phenylpropanolamine
We checked these two against our interaction database. Here is what we found.
No Known Interaction Found
We did not find a documented interaction between Guaifenesin, Phenylephrine, Phenylpropanolamine and Hempnettle in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.
Worth understanding: our licensed dataset holds no drug-interaction record for Hempnettle at all — not against Guaifenesin, Phenylephrine, Phenylpropanolamine, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.
If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.
Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.
Hempnettle safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
See Every Supplement That Interacts With Guaifenesin, Phenylephrine, Phenylpropanolamine
This page covers Hempnettle only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Guaifenesin, Phenylephrine, Phenylpropanolamine page lists 62 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Ephedra (major), Peyote (major), Rauvolfia Vomitoria (major) and Sida Cordifolia (major).
By severity: 5 major · 44 moderate · 13 minor.
From our pharmacist’s overview on the Guaifenesin, Phenylephrine, Phenylpropanolamine page
“Entex (guaifenesin, phenylephrine, phenylpropanolamine) treats congestion with two decongestants that behave like mild stimulants, squeezing blood vessels and pushing blood pressure up. That built-in stimulant effect is why its list of 62 supplement interactions deserves genuine care, and why five entries rate major.”
Reviewed by 2 · Jul 18, 2026
Open the Guaifenesin, Phenylephrine, Phenylpropanolamine interaction page
Taking Hempnettle as Part of a Dietary Supplement Product? Check It for Interactions
We hold 4 real supplement products containing Hempnettle, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Hempnettle. Even though Hempnettle itself has no known interaction with Guaifenesin, Phenylephrine, Phenylpropanolamine, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Hempnettle and Guaifenesin, Phenylephrine, Phenylpropanolamine Sit Against Everything Else
Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.
#998 of 1,452 supplements looked up here in the last 7 days
#2,148 of 2,830 medications looked up here in the last 7 days
Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.
Where does our data come from?
- Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions. Hempnettle is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Hempnettle reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Hempnettle and Guaifenesin, Phenylephrine, Phenylpropanolamine records this page draws on were last updated June 22, 2026.
- What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
About Hempnettle
What is Hempnettle?
- Coughs and chest congestion
- Mild respiratory complaints
- General tonic
- Soothing irritated airways
Hempnettle is a traditional European herb that has been used as a tea for coughs and minor respiratory complaints, but there is very little modern scientific research to support these uses. Because its safety and effectiveness are not well studied, it is best to talk with a pharmacist or doctor before trying it, and to avoid it during pregnancy and breastfeeding.
Galeopsis tetrahit · Lamiaceae · Aerial parts (flowering tops, leaves, and stems) · Tea (infusion), liquid extract, dried herb
An interaction check asks whether these two react with each other — it does not ask whether Hempnettle is a good idea for someone in your situation. Here is what our Hempnettle record says about it on its own.
Hempnettle: dosing
There is no established, science-based dose for hempnettle. A standard safe and effective amount has not been determined in research.If you choose to use a product that contains it, follow the directions on the product label and do not exceed the suggested amount. Because doses and product strengths vary widely, it is a good idea to review the product with a pharmacist before using it.
From our Hempnettle monograph — the full record covers uses, side effects and every documented interaction.
Other Drugs & Hempnettle
Browse every other medication we’ve checked against Hempnettle — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Hempnettle against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Metoprolol ›
- Aspirin ›
- Ivermectin ›
- Rivaroxaban ›
- Rosuvastatin ›
- Escitalopram ›
- Tadalafil ›
- Acetaminophen ›
- Clopidogrel ›
- Valacyclovir ›
- Atorvastatin ›
- Docusate ›
- Hydroxyurea ›
- Abemaciclib ›
- Methamphetamine ›
- Ibuprofen ›
- Sumatriptan ›
- Semaglutide ›
- Tirzepatide ›
- Warfarin Sodium ›
- Prednisone ›
- Propranolol ›
- Lisdexamfetamine ›
- Acyclovir ›
- Bupropion ›
- Metformin ›
- Amoxicillin ›
- Lisinopril ›
- Bendamustine ›
- Amitriptyline ›
- Doxycycline ›
- Lamotrigine ›
- Fluoxetine ›
- Methotrexate ›
- Acetaminophen, Codeine ›
- Gabapentin ›
- Amphetamine ›
- Pregabalin ›
- Isotretinoin ›
- Dextroamphetamine ›
- Azithromycin ›
- Clonazepam ›
- Quetiapine ›
- Omeprazole ›
- Amlodipine Besylate ›
- Methylene Blue ›
- Duloxetine ›
- Letrozole ›
- Buspirone ›
- Citalopram ›
- Ciprofloxacin ›
- Naproxen ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Hempnettle list.
Hempnettle References
The 2 sources that drive our Hempnettle monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Hempnettle is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.
Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Taking Hempnettle and Guaifenesin, Phenylephrine, Phenylpropanolamine Together: Common Questions
Is it safe to take Hempnettle with Guaifenesin, Phenylephrine, Phenylpropanolamine?
Does Guaifenesin, Phenylephrine, Phenylpropanolamine interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.