Fucus Vesiculosus - Phexxi (Lactic Acid, Citric Acid, Potassium Bitartrate) Interaction
Herbal: Fucus Vesiculosus
Also Known As: Black Tang, Bladder Fucus, Bladder Wrack, Blasentang, Cutweed, Dyer's Fucus, Goémon, Kelp, Kelpware, Kelp-Ware, Ocean Kelp, Red Fucus, Rockwrack, Sea Kelp, Sea Oak, Seawrack, Varech
Drug: Lactic Acid, Citric Acid, Potassium Bitartrate
Brand names:
Phexxi
Medical Content Editor Dr. Brian Staiger, PharmD
Last updated
Jun 15, 2025
Interaction Details
There were no interactions found between Lactic Acid, Citric Acid, Potassium Bitartrate and Fucus Vesiculosus. 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.
Fucus Vesiculosus Overview
Fucus vesiculosus, also known as bladderwrack, is a type of brown seaweed found in both the Atlantic and Pacific ocean. It is a source of several nutrients, including iodine, potassium, and manganese. In traditional medicine, Fucus vesiculosus has been used to help support the thyroid gland and may have anti-inflammatory effects. It is most commonly used in topical preparations versus in oral ones as is high in iodine and may cause thyroid problems if used in excess.
Lactic Acid, Citric Acid, Potassium Bitartrate Overview
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The combination of lactic acid, citric acid, and potassium bitartrate is used to prevent pregnancy when used just before vaginal sex in women who can become pregnant. It does not prevent pregnancy when used after vaginal sex. The combination of lactic acid, citric acid, and potassium bitartrate is in a class of medications called non-hormonal contraceptives. It works by lowering the pH of the vagina and reducing sperm motility. Lactic acid, citric acid, and potassium bitartrate may prevent pregnancy, but this medication will not prevent the spread of human immunodeficiency virus (HIV, the virus that causes acquired immunodeficiency syndrome [AIDS]) and other sexually transmitted diseases.
Fucus Vesiculosus - More Interactions
Fucus Vesiculosus interacts with 866 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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