Black Horehound - Retinol Interaction
Herbal: Black Horehound
Also Known As: Ballota nigra, Ballota, Ballote Fétide, Ballote Noire, Ballote Puante, Ballote Vulgaire, Black Stinking Horehound, Marrube Fétide, Marrube Noir, Marrubio Negro
Drug: Retinol
Brand names:
Aquasol A
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
May 04, 2025
Interaction Details
There were no interactions found between Retinol and Black Horehound. This does not mean the potential for an interaction does not exist, however. There is often a lack of studies and data surrounding traditional medicine, especially concerning drug interactions, so it is important to always consult your provider before making any changes to your medication regimen.
Black Horehound Overview
Black horehound (Ballota nigra) is a perennial herbaceous plant native to Europe and parts of Asia. It's known for its distinctive dark stems, toothed leaves, and small white or pale pink flowers. Traditionally used for its potential medicinal properties, black horehound has been employed in herbal remedies for digestive issues and as a mild sedative.
Retinol Overview
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Vitamin A is used as a dietary supplement when the amount of vitamin A in the diet is not enough. People most at risk for vitamin A deficiency are those with a limited variety of food in their diet and in those with cystic fibrosis (an inborn disease that causes problems with breathing, digestion, and reproduction) and malabsorption problems (problems absorbing food). Vitamin A is used to prevent and treat xerophthalmia (unable to see in low light) and night blindness. Vitamin A is in a class of medications called an antioxidant. It is needed by the body to help with vision, reproduction, cell growth, and to support the immune system. It works to protect your cells against free radicals and to support cell growth and function.
Black Horehound - More Interactions
Black Horehound interacts with 23 drugs
Interaction Rating Key
These severity listings are for informational use only. Never start, stop or otherwise change your therapy before speaking with your provider.
| Major | The combined use of these agents is strongly discouraged as serious side effects or other negative outcomes could occur. |
| Moderate | Use cautiously under the care of a healthcare professional or avoid this combination. A significant interaction or negative outcome could occur. |
| Minor | Be aware that there is a chance of an interaction. Watch for warning signs of a potential interaction. |
| Unknown | No interactions have been reported or no interaction data is currently available. |
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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
Drug descriptions are provided by MedlinePlus.
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Dr. Brian Staiger, PharmD
In addition to being a clinical pharmacist specializing in pharmacotherapy, Dr. Brian Staiger is a registered herbalist through the American Herbalist Guild. He has combined his passion for pharmacy practice with the study of medical ethnobotany to improve patient care. Feel free to reach out about any of your herbal or medication questions!
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