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Dietary supplement

David Winston's Lung Relief Antispasmodic Ingredients & Drug Interactions

by Herbalist & Alchemist

David Winston's Lung Relief Antispasmodic label
See full label image
Liquid 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 David Winston's Lung Relief Antispasmodic 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

David Winston's Lung Relief Antispasmodic is a dietary supplement by Herbalist & Alchemist with 6 active ingredients. Its ingredients are commonly taken for cough and chest congestion, sore throat, bronchitis and respiratory irritation.Based on those ingredients, 1,450 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Licorice root extract, Wild Cherry bark extract, Khella seed extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist

Ask about any prescription or over-the-counter medication and we check it for interactions with David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist

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 Jul 11, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 6 active ingredients.
  • “Proprietary Blend” is a proprietary blend — the label gives one combined amount (2 mL) without saying how much of each component you get.

This product contains six active herbal ingredients in liquid extract form. Mullein leaf, wild cherry bark, licorice root, wild lettuce, khella seed, and lobelia herb in flower and seed are all included in a proprietary blend.

The liquid also contains inactive ingredients: distilled water, ethyl alcohol, vegetable glycerin, and apple cider vinegar.

Does it work?

Not established
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 established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use.

Why this rating?
  • The label markets this product for: Promotes healthy respiratory function.
  • We looked for evidence on: Asthma, Bronchitis, Cough, Pneumonia, Tuberculosis, Breathing difficulty — and 3 related terms.
  • The closest evidence on file: Mullein is rated "Insufficient Reliable Evidence To Rate" for Bronchitis (Natural Medicines).
  • Also on file: Mullein is rated "Insufficient Reliable Evidence To Rate" for Asthma, Cough, Pneumonia.
  • Also on file: Licorice is rated "Insufficient Reliable Evidence To Rate" for Asthma, Tuberculosis.

The evidence supporting these ingredients for lung and respiratory use isn't established in our data. Mullein leaf has insufficient reliable evidence for bronchitis, asthma, cough, migraine headache, and diarrhea.

Wild cherry bark, wild lettuce, and khella have no effectiveness ratings on file. Lobelia is rated possibly ineffective for smoking cessation.

Licorice root is rated possibly effective for canker sores and atopic dermatitis (eczema), but insufficient evidence for asthma and Addison disease — not for cough or bronchial use.

The evidence, ingredient by ingredient Mullein Wild Cherry Licorice Wild Lettuce Khella Lobelia

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 6 of the 6 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 6 of 6.
  • General safety write-ups exist for 6 of 6.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Mullein leaf is generally well tolerated for short-term use, but human safety data are limited. A small number of case reports describe a skin reaction (dermatitis) after touching the plant or inhaling its dust.

Wild cherry is generally considered safe in the small amounts found in commercial cough products, but the plant contains cyanide-forming compounds and shouldn't be used in large amounts — large doses can cause cyanide poisoning, which can be fatal. Licorice is fine in small food amounts, but high doses or long-term use of the compound glycyrrhizin can cause serious problems like headache, nausea, vomiting, and potentially high blood pressure and low potassium.

Wild lettuce has limited human safety data; large amounts can cause sweating, rapid heartbeat, dizziness, ringing in the ears, vision changes, and even respiratory depression or coma. Khella may cause nausea, dizziness, constipation, headache, itching, insomnia, and sun sensitivity — and can raise liver enzyme levels with prolonged or high-dose use.

Lobelia can be toxic at higher doses, causing nausea, vomiting, diarrhea, tremors, rapid heartbeat, low blood pressure, and even death; toxicity has been reported at doses as low as 50 mg.

Side effects, ingredient by ingredient Mullein Wild Cherry Licorice Wild Lettuce Khella Lobelia

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?
  • 6 of the 6 matched ingredients can interact with medications — Lobelia, Wild Lettuce, Mullein, Licorice, Wild Cherry, among others.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; heart-rhythm medications; lithium.
  • For scale: 1,451 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 this product, check with your pharmacist if you take digoxin or other cardiac glycosides (heart medications), warfarin or other blood thinners, lithium, sedating drugs (like sleeping pills or opioids), sun-sensitizing antibiotics (like quinolones or tetracyclines), liver-damaging medications (like acetaminophen or certain chemotherapy drugs), or any drug metabolized by liver enzymes (CYP3A4, CYP2B6, CYP2C19, or CYP2C9). Licorice root is responsible for the largest number of interactions in this product.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

This product mixes herbal ingredients with documented interactions, particularly licorice, which affects many common medications including heart and blood-thinning drugs. It's most important to check this against your exact prescriptions before you start.

If you're taking digoxin, warfarin, lithium, sedating medications, or any liver-metabolized drugs, talk with your pharmacist first. Pregnant or breastfeeding individuals should avoid this product — safety data are insufficient or advise against use for most of these ingredients.

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

Assessment coverage: 6 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Aug 31, 2018.

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 David Winston's Lung Relief Antispasmodic, straight from the product label.

Brand Herbalist & Alchemist
Barcode (UPC) 667056134013
Net contents 2 fl. Oz.; 60 mL
Market status On market
Date entered into DSLD Aug 31, 2018
DSLD ID 179769
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Kosher
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 David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist, 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:
1.5 mL
Maximum serving Sizes:
2 mL
Servings per container
30
UPC/BARCODE
667056134013
IngredientAmount% DV
Proprietary Blend2 mL--
Mullein leaf extract0 NP--
Wild Cherry bark extract0 NP--
Licorice root extract0 NP--
Wild Lettuce herb extract0 NP--
Khella seed extract0 NP--
Lobelia herb in flower and seed extract0 NP--

Other ingredients: distilled Water, Ethyl Alcohol, Vegetable Glycerin, Apple Cider Vinegar

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.
General Statements

Promotes Healthy Respiratory Function

FDA Statement of Identity

Herbal Supplement

Suggested/Recommended/Usage/Directions

Suggested use: 30-40 drops (1.5-2 mL) in juice or water. Take up to 6 times per day. Shake well before using.

Precautions

Contraindications: Do not use during pregnancy.

Keep out of children's reach

FDA Disclaimer Statement

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

Seals/Symbols

OK

Formula

OK

General

NO. ASR-2 1734TH

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

See for yourself

David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist label

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

David Winston's Lung Relief Antispasmodic 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 David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist

These are the 6 active ingredients this product is made of. Select any to open its full monograph.

Serving size1.5 mL Dosage formLiquid Servings per container30 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Other (inactive) ingredients: Distilled Water, Ethyl Alcohol, Vegetable Glycerin, Apple Cider Vinegar. These complete the product’s ingredient list but are not active constituents.

Interaction report

David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist Drug Interactions

Want to check YOUR meds against David Winston's Lung Relief Antispasmodic?

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
1,450Drugs
1,389 Moderate 61 Minor

Ingredients driving the most interactions

Licorice root extract 1,040
Wild Cherry bark extract 643
Khella seed extract 618
Wild Lettuce herb extract 393
Mullein leaf extract 122

Individual Drug Interactions

The ingredients in David Winston's Lung Relief Antispasmodic interact with 1,450 drugs. Click any drug to see the details.

6 of the 6 ingredients in David Winston's Lung Relief Antispasmodic interact with drugs. Each result below shows which ingredient is responsible. Licorice root extract Wild Cherry bark extract Khella seed extract Wild Lettuce herb extract Mullein leaf extract Lobelia herb in flower and seed extract

Each ingredient & the kinds of drugs it affects

For each ingredient in David Winston's Lung Relief Antispasmodic with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Licorice root extract18 drug types · 1,040 drugs

Antihypertensive Drugs

Theoretically, licorice might reduce the effects of antihypertensive drugs.
In human research, licorice increases blood pressure in a dose-dependent manner.

Likelihood Possible Evidence B
Cisplatin (Platinol-Aq)

Theoretically, licorice might reduce the effects of cisplatin.
In animal research, licorice diminished the therapeutic efficacy of cisplatin.

Likelihood Possible Evidence D
Corticosteroids

Theoretically, concomitant use of licorice and corticosteroids might increase the side effects of corticosteroids.
Case reports suggest that concomitant use of licorice and oral corticosteroids, such as hydrocortisone, can potentiate the duration of activity and increase blood levels of corticosteroids. Additionally, in one case report, a patient with neurogenic orthostatic hypertension stabilized on fludrocortisone 0.1 mg twice daily developed pseudohyperaldosteronism after recent consumption of large amounts of black licorice.

Likelihood Possible Evidence D
Cytochrome P450 2B6 (Cyp2B6) Substrates

Theoretically, licorice might increase levels of drugs metabolized by CYP2B6.
In vitro research shows that licorice extract and glabridin, a licorice constituent, inhibit CYP2B6 isoenzymes. Licorice extract from the species G. uralensis seems to inhibit CYP2B6 isoenzymes to a greater degree than G. glabra extract in vitro. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2B6; however, these interactions have not yet been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C19 (Cyp2C19) Substrates

Theoretically, licorice might increase levels of drugs metabolized by CYP2C19.
In vitro, licorice extracts from the species G. glabra and G. uralensis inhibit CYP2C19 isoenzymes in vitro. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2C19; however, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C8 (Cyp2C8) Substrates

Theoretically, licorice might increase levels of drugs metabolized by CYP2C8.
In vitro, licorice extract from the species G. glabra and G. uralensis inhibits CYP2C8 isoenzymes. Theoretically, these species of licorice might increase levels of drugs metabolized by CYP2C8; however, this interaction has not yet been reported in humans.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP2C9.
There is conflicting evidence about the effect of licorice on CYP2C9 enzyme activity. In vitro research shows that extracts from the licorice species G. glabra and G. uralensis moderately inhibit CYP2C9 isoenzymes. However, evidence from an animal model shows that licorice extract from the species G. uralensis can induce hepatic CYP2C9 activity. Until more is known, licorice should be used cautiously in people taking CYP2C9 substrates.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, licorice might increase or decrease levels of drugs metabolized by CYP3A4.
Pharmacokinetic research shows that the licorice constituent glycyrrhizin, taken in a dosage of 150 mg orally twice daily for 14 days, modestly decreases the area under the concentration-time curve of midazolam by about 20%. Midazolam is a substrate of CYP3A4, suggesting that glycyrrhizin modestly induces CYP3A4 activity. Animal research also shows that licorice extract from the species G. uralensis induces CYP3A4 activity. However, licorice extract from G. glabra species appear to inhibit CYP3A4-induced metabolism of testosterone in vitro. It is thought that the G. glabra inhibits CYP3A4 due to its constituent glabridin, which is a moderate CYP3A4 inhibitor in vitro and not present in other licorice species. Until more is known, licorice should be used cautiously in people taking CYP3A4 substrates.

Likelihood Possible Evidence B
Digoxin (Lanoxin)

Theoretically, concomitant use of licorice with digoxin might increase the risk of cardiac toxicity.
Overuse or misuse of licorice with cardiac glycoside therapy might increase the risk of cardiac toxicity due to potassium loss.

Likelihood Possible Evidence D
Diuretic Drugs

Theoretically, concomitant use of licorice with diuretic drugs might increase the risk of hypokalemia.
Overuse of licorice might compound diuretic-induced potassium loss. In one case report, a 72-year-old male with a past medical history of hypertension, type 2 diabetes, hyperlipidemia, arrhythmia, stroke, and hepatic dysfunction was hospitalized with severe hypokalemia and uncontrolled hypertension due to pseudohyperaldosteronism. This was thought to be provoked by concomitant daily consumption of a product containing 225 mg of glycyrrhizin, a constituent of licorice, and hydrochlorothiazide 12.5 mg for 1 month.

Likelihood Possible Evidence D
Estrogens

Theoretically, licorice might increase or decrease the effects of estrogen therapy.
Theoretically, licorice might interfere with estrogen therapy due to estrogenic and anti-estrogenic effects.

Likelihood Possible Evidence D
Loop Diuretics

Theoretically, loop diuretics might increase the mineralocorticoid effects of licorice.
Theoretically, loop diuretics might enhance the mineralocorticoid effects of licorice by inhibiting the enzyme that converts cortisol to cortisone; however, bumetanide (Bumex) does not appear to have this effect.

Likelihood Possible Evidence D
Midazolam (Versed)

Theoretically, licorice might decrease levels of midazolam.
In humans, the licorice constituent glycyrrhizin appears to moderately induce the metabolism of midazolam. This is likely due to induction of cytochrome P450 3A4 by licorice. Until more is known, licorice should be used cautiously in people taking midazolam.

Likelihood Possible Evidence B
P-Glycoprotein Substrates

Theoretically, licorice might decrease the absorption of P-glycoprotein substrates.
In vitro research shows that licorice can increase P-glycoprotein activity.

Likelihood Possible Evidence D
Paclitaxel (Abraxane, Onxol)

Theoretically, licorice might decrease plasma levels and clinical effects of paclitaxel.
Multiple doses of licorice taken concomitantly with paclitaxel might reduce the effectiveness of paclitaxel. Animal research shows that licorice 3 grams/kg given orally for 14 days before intravenous administration of paclitaxel decreases the exposure to paclitaxel and increases its clearance. Theoretically, this occurs because licorice induces cytochrome P450 3A4 enzymes, which metabolize paclitaxel. Notably, a single dose of licorice did not affect exposure or clearance of paclitaxel.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, licorice might decrease plasma levels and clinical effects of warfarin.
Licorice seems to increase metabolism and decrease levels of warfarin in animal models. This is likely due to induction of cytochrome P450 2C9 (CYP2C9) metabolism by licorice. Advise patients taking warfarin to avoid taking licorice.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, licorice might decrease the levels and clinical effects of CYP1A2 substrates.
In vitro research shows that licorice induces CYP1A2 enzymes.

Likelihood Possible Evidence D
Methotrexate (Trexall, Others)

Theoretically, licorice might increase levels of methotrexate.
Animal research suggests that intravenous administration of glycyrrhizin, a licorice constituent, and high-dose methotrexate may delay methotrexate excretion and increase systemic exposure, leading to transient elevations in liver enzymes and total bilirubin. This interaction has not yet been reported in humans.

Likelihood Unlikely Evidence D
Licorice root extract full monograph & interactions

Wild Cherry bark extract1 drug type · 643 drugs

Cytochrome P450 3A4 (Cyp3A4) Substrates

In vitro research suggests that wild cherry can inhibit cytochrome P450 3A4 (CYP3A4) enzymes. Theoretically, wild cherry might increase levels of drugs metabolized by CYP3A4. However, so far, this interaction has not been reported in humans.
Some drugs metabolized by CYP3A4 include lovastatin (Mevacor), ketoconazole (Nizoral), itraconazole (Sporanox), fexofenadine (Allegra), triazolam (Halcion), and others.

Likelihood Possible Evidence D
Wild Cherry bark extract full monograph & interactions

Khella seed extract3 drug types · 618 drugs

Digoxin (Lanoxin)

Theoretically, khella might decrease the effectiveness of cardiac glycosides like digoxin. The khella constituent visnadin has negative inotropic effects that might counter the effects of cardiac glycosides.

Likelihood Possible Evidence D
Hepatotoxic Drugs

Theoretically, khella might have additive adverse effects on the liver when used with hepatotoxic drugs. Khella can increase liver transaminases. Some drugs that can adversely affect the liver include acetaminophen (Tylenol), amiodarone (Cordarone), carbamazepine (Tegretol), isoniazid (INH), methotrexate (Rheumatrex), methyldopa (Aldomet), and many others.

Likelihood Possible Evidence B
Photosensitizing Drugs

Theoretically, concomitant use might result in increased photosensitivity. Khella constituents can cause photosensitivity. Some drugs that cause photosensitivity include amitriptyline (Elavil), quinolones (Ciprofloxacin, others), sulfa drugs (Septra, Bactrim, others), and tetracycline.

Likelihood Possible Evidence D
Khella seed extract full monograph & interactions

Wild Lettuce herb extract2 drug types · 393 drugs

Anticholinergic Drugs

Studies report varying evidence on whether or not wild lettuce contains hyoscyamine, an anticholinergic drug. If it does, it appears to be in very low amounts. Nevertheless, there have been case reports of individuals consuming large amounts of wild lettuce experiencing anticholinergic-related side effects, such as constipation, dry mouth, dizziness, and sweating. Therefore, if you are already taking a drug with anticholinergic effects, you should be cautious about combining it with wild lettuce as the risk of side effects may be increased.

Likelihood Possible Evidence D
Cns Depressants

Theoretically, concomitant use with drugs with sedative effects might cause additive therapeutic effects and adverse effects.

Likelihood Possible Evidence D
Wild Lettuce herb extract full monograph & interactions

Mullein leaf extract1 drug type · 122 drugs

Anticoagulant/Antiplatelet Drugs

Lab tests on extracts from different parts of common and dense-flowered mullein plants show that they do have some blood-thinning effects, as they increase the time it takes for blood to clot. This is likely due to at least one of the known constituents of muellein, triterpenoid saponins. However, the effects appear to be mild and results have been inconsistent. Extracts from different plant parts have been show to have varying anticoagulant strengths, with water-based ones being more potent than alcohol-based extracts.

Likelihood Unlikely Evidence A
Mullein leaf extract full monograph & interactions

Lobelia herb in flower and seed extract1 drug type · 1 drug

Lithium

Lobelia is thought to have diuretic properties. Theoretically, due to these potential diuretic effects, lobelia might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.

Likelihood Probable Evidence D
Lobelia herb in flower and seed extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for David Winston's Lung Relief Antispasmodic, from the product label.

Herbalist & Alchemist

See all Herbalist & Alchemist products
Name
Herbalist & Alchemist, Inc.
City
Washington
State
NJ
ZipCode
07882
Phone Number
800-611-8235
Web Address
www.herbalist-alchemist.com
Pharmacist Counseling Corner

David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist: Common Questions

Does David Winston's Lung Relief Antispasmodic by Herbalist & Alchemist interact with any medications?
Yes. Based on its ingredients, David Winston's Lung Relief Antispasmodic has a known interaction with 1,450 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
David Winston's Lung Relief Antispasmodic contains 6 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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.
Can I take this if I'm pregnant or breastfeeding?
No — safety data advise against this product during pregnancy and while breastfeeding. Most of the active ingredients either lack enough safety information or have documented risks in pregnancy and lactation. Talk with your doctor or pharmacist before using any supplement while pregnant or nursing.
Is this product safe to use long-term?
The safety data don't support long-term use. Mullein leaf safety data are limited, licorice can cause serious effects with high doses or prolonged use, wild lettuce has limited human data, khella can raise liver enzyme levels with prolonged or high-dose use, and lobelia carries toxicity concerns. Short-term use is safer, but discuss duration with your pharmacist.
What does this product do?
It's marketed as a lung relief antispasmodic, but the evidence supporting these herbal ingredients for cough, bronchitis, or asthma isn't established in our data. Only licorice has any documented effectiveness — for canker sores and eczema — which isn't relevant to lung use.
Can wild lettuce or lobelia make me drowsy?
Wild lettuce can theoretically add to the effects of sedating drugs, which might cause extra drowsiness. Lobelia is known to cause dizziness at higher doses. If you experience unusual drowsiness, dizziness, or throat irritation, stop and contact your pharmacist.
What's the risk with licorice in this product?
Licorice can interact with many common medications — heart drugs, blood thinners, medications your liver breaks down, and water pills — by either raising or lowering their levels in your blood. It can also cause headache, nausea, and high blood pressure with higher doses. Always check this ingredient against your prescriptions.
Does this product contain any fillers?
The active ingredients are in a proprietary blend; the liquid also contains distilled water, ethyl alcohol, vegetable glycerin, and apple cider vinegar as inactive ingredients.

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.

David Winston's Lung Relief Antispasmodic label
Go deeper

The Full Monographs Behind David Winston's Lung Relief Antispasmodic’s Ingredients

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

Herb & supplement monograph

Mullein

Interacts with 122 drugs

Mullein is a traditional herbal remedy most often used as a tea or syrup to soothe coughs, sore throats, and respiratory irritation. High-quality human studies are lacking, so its benefits a...

Read the full Mullein monograph → Herb & supplement monograph

Wild Cherry

Interacts with 643 drugs

Wild cherry bark is a traditional cough remedy found in many old-fashioned cough syrups and lozenges, but there is little modern scientific evidence proving it works. The bark, leaves, and s...

Read the full Wild Cherry monograph → Herb & supplement monograph

Licorice

Interacts with 1,040 drugs

Licorice root is a traditional remedy used for sore throats, coughs, and digestive complaints, but solid human evidence is limited for most uses. Regular licorice contains glycyrrhizin, whic...

Read the full Licorice monograph → Herb & supplement monograph

Wild Lettuce

Interacts with 393 drugs

Wild lettuce is a traditional herb used mainly for sleep, anxiety, and pain, but solid human research supporting these uses is very limited. Because its safety is not well studied, it should...

Read the full Wild Lettuce monograph → Herb & supplement monograph

Khella

Interacts with 618 drugs

Khella is a Mediterranean herb whose seeds contain compounds like khellin that may relax smooth muscle in the airways and blood vessels. While it has a long history of traditional use for br...

Read the full Khella monograph → Herb & supplement monograph

Lobelia

Interacts with 1 drug

Lobelia is a traditional herb once used for breathing problems and to help people quit smoking, but reliable evidence supporting these uses is lacking. It can be toxic in higher amounts, cau...

Read the full Lobelia monograph →
Sources

Sources & How We Checked

David Winston's Lung Relief Antispasmodic'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 119 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.

Mullein 2 references
  1. Castro AI, Carmona JB, Gonzales FG, Nestar OB. Occupational airborne dermatitis from gordolobo (Verbascum densiflorum). Contact Dermatitis 2006;55(5):301.
  2. Flores Echaiz C, Al Ali A, Cao AQ, Sasseville D. Simultaneous contact dermatitis caused by Asteraceae and Verbascum thapsus. Contact Dermatitis 2017;76(5):316-8.

See these in context on the Mullein monograph →

Wild Cherry 4 references
  1. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  2. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  3. Budzinski JW, Foster BC, Vandenhoek S, Arnason JT. An in vitro evaluation of human cytochrome P450 3A4 inhibition by selected commercial herbal extracts and tinctures. Phytomedicine 2000;7:273-82. PubMed
  4. Pentore, R., Venneri, A., and Nichelli, P. Accidental choke-cherry poisoning: early symptoms and neurological sequelae of an unusual case of cyanide intoxication. Ital.J Neurol.Sci. 1996;17(3):233-235. PubMed

See these in context on the Wild Cherry monograph →

Licorice 92 references
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  90. Puaratanaarunkon T, Washrawirul C, Chuenboonngarm N, Noppakun N, Asawanonda P, Kumtornrut C. Efficacy and safety of a facial serum containing snail secretion filtrate, Calendula officinalis, and Glycyrrhiza glaba root extract in the treatment of maskne: A
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Wild Lettuce 5 references
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Khella 10 references
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Lobelia 6 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  3. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
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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.

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