Respiratory: Cough, whooping cough (Web MD), sinus, asthma, Tb, bronchitis, as an expectorant, sore throat, colds, decongestant

Cardiovascular: Vasodilator may lower blood pressure

Gastrointestinal: Diarrhea, constipation, gallbladder complaints, intestinal parasites, bloating, gas/flatulence (German Commission e); acid indigestion, appetite stimulant

Genitourinary: Decreases menstrual symptoms (dysmenorrhea or painful periods)

Musculoskeletal: Arthritis, anti-inflammatory

Skin: Reduces skin damage, wound healing,

Cholesterol: May help lower cholesterol

Glucose: May decrease sugar levels

Immunity: Increases immune response

Cancer: May help to prevent cancer

Infectious Disease: HSV, trichomonas, MRSA

Other: Diuretic, diaphoretic, insecticide, appetite loss (German Commission e), vasodilator

                                                   *   *   *

SIDE EFFECTS: May cause a drop in blood sugar, cardiac problems (may cause arrhythmias - irregular heartbeats, hypotension (very low blood pressure), nausea

CAUTIONS/CONTRAINDICATIONS: If you want to take this supplement and are on blood pressure medicine, diabetic medicine, or have heart problems, discuss it with your primary care provider beforehand.

FORMS: Juices, Tea, Extract, Topicals, oils, lozenges (i.e. component of Ricola) - do not take horehound within 30 minutes of taking other medication

RECOMMENDED BRANDS

No recommended brands available at this time

Dosage

As directed on the product label.

Some clinical and consumer sources describe a wide range of herbal amounts, and many are not supported by strong evidence. Always follow the manufacturer’s instructions.

Traditional herbal practices describe the use of this herb in crude‑herb, tea, or extract form. Modern commercial products vary widely in strength and formulation, so traditional amounts may not apply to current products. Many people use this herb for seasonal wellness or respiratory comfort, but evidence is limited and product strengths differ significantly.

This herb is often included in combination formulas, such as cold remedies and lozenges. These combinations vary widely in strength and purpose and reflect consumer products rather than standardized clinical recommendations.

For detailed drug dosing and interaction information, refer to herbal dosing on the Epocrates website.

Traditional Use (General Information Only)

This herb has been used traditionally for seasonal wellness, respiratory comfort, and general support. Traditional practices describe the use of dried herb, teas, and extracts. These uses are based on historical and consumer experience rather than strong clinical evidence.

These reflect traditional and consumer uses, not evidence‑based medical treatments. Product formulations vary, so it is important to follow the manufacturer’s directions.

**Disclaimer: The material above is for informational purposes only. This information is not intended to diagnose, treat or cure a condition. The uses listed above are tentative; some have or are undergoing research trials, but many are not FDA-approved. It is essential that you investigate these supplements further before deciding to use them. Check interactions and contraindications on sites like Drugs.com or WebMD. Do not attempt to treat a serious condition like liver, kidney problems, high blood pressure, heart, cancer, diabetes, or thyroid issues without discussing it with a healthcare provider first. If you are pregnant, do not use supplements without discussing it with your healthcare provider.