is the original broad-spectrum botanical formula from Bio-Botanical Research, combining 18 botanical extracts and essential oils in a concentrated liquid drop format to support gastrointestinal and systemic microbial balance, disrupt biofilms, selectively enhance beneficial organisms, and support immune function, healthy digestion, and whole-body vitality. The go-to broad-spectrum botanical formula for integrative and functional medicine practitioners for over 35 years.

The gut microbiome is not just a collection of individual microbes. It is an ecosystem organized into biofilm communities, protective protein and polysaccharide matrices that microbes use to shield themselves from the immune system, antibiotics, and botanical antimicrobials. Standard gut support strategies that address individual microbes without disrupting biofilm fail to reach the microorganisms living within these protective structures. Biocidin was formulated specifically for this challenge, with a broad-spectrum 18-ingredient botanical blend that includes specific compounds shown to penetrate and dismantle biofilm matrices while addressing microbial imbalance throughout the entire GI tract from mouth to colon.

The formula operates through multiple simultaneous mechanisms. Polyphenol-rich botanicals including Bilberry, Grape Seed, and Milk Thistle provide antioxidant support and support the gut mucosal environment. Antimicrobial botanicals including Goldenseal, Black Walnut, Garlic, and Oregon Grape address microbial overgrowth across bacterial, fungal, and protozoal populations. Essential oils including Oregano, Tea Tree, Lavender, and Galbanum provide their own complementary broad-spectrum antimicrobial and biofilm-disrupting activity. Immune-modulating botanicals including Echinacea Purpurea and Echinacea Angustifolia support healthy immune function and the body's natural defenses. And liver and digestive support botanicals including Milk Thistle, Gentian, and Fumitory support healthy detoxification and elimination alongside the microbial addressing activity.

The liquid drop format allows for flexible, graduated dosing starting low and building gradually, making it appropriate for highly sensitive individuals and those who need to titrate carefully during gut cleansing and microbiome rebalancing. Pleasant taste appeals to both adults and children.Made with organic ingredients where indicated. Contains walnut hull and leaf. Free from dairy, gluten, soy, corn, animal products, artificial coloring, and artificial flavoring. Not intended for use during pregnancy. 1 fl oz dropper bottle, approximately 600 one-drop servings.

Key Benefits:

• Supports GI and systemic microbial balance across bacterial, fungal, and protozoal populations
• Dismantles biofilm matrices to reach microbes sheltered within protective community structures
• Selectively enhances beneficial organisms while addressing unwanted microbes
• Supports immunomodulatory activity for healthy immune function and natural defense
• Supports healthy digestion and elimination, and may reduce bloating and gas
• Supports liver detoxification and healthy toxin clearance
• Supports vitality, mental clarity, and healthy energy
• Supports healthy mobility and body comfort
• 18-ingredient broad-spectrum botanical and essential oil formula
• Graduated flexible liquid drop dosing, suitable for sensitive individuals
• Pleasant taste, suitable for adults and children
• Over 35 years as the go-to broad-spectrum botanical for integrative and functional medicine
• Laboratory tested and clinically researched
• Organic ingredients, free from dairy, gluten, soy, corn, animal products, and artificial ingredients

What's Inside — Full Ingredient List:Proprietary Herbal Blend — 30 mg per drop (Vegetable glycerin base):

Bilberry Fruit Extract — Rich in anthocyanosides (standardized to 25% anthocyanosides), providing potent antioxidant and vascular protective activity. Supports the gut mucosal environment and complements the antimicrobial activity of the formula with antioxidant protection.

Grape Seed Extract (minimum 90% polyphenols) — One of the most potent plant-based antioxidant sources available. Supports healthy gut mucosal integrity, provides complementary antimicrobial activity, and supports the systemic antioxidant environment during microbiome rebalancing.

Shiitake Mushroom Extract — A medicinal mushroom providing immunomodulatory polysaccharides (particularly lentinan and beta-glucans) that support immune cell activation and healthy immune defense. Also provides complementary antimicrobial and antifungal activity.

Goldenseal Root — A potent North American botanical containing berberine and other isoquinoline alkaloids with well-documented activity against a broad range of bacteria, fungi, and protozoa. Berberine specifically supports healthy gut microbial balance and has been extensively studied for its antimicrobial and gut-supportive properties.

Noni Fruit Extract — A Pacific botanical with antioxidant, anti-inflammatory, and immune-modulating activity that supports the overall microbiome rebalancing environment.

Garlic Bulb — One of the most studied natural antimicrobials. Allicin and other sulfur compounds from garlic support activity against bacteria, fungi, parasites, and viruses across the GI tract and systemically.

White Willow Bark — Provides salicin, a natural precursor to salicylate compounds with anti-inflammatory activity. Supports healthy gut inflammatory balance during microbiome rebalancing.

Milk Thistle Seed — Silymarin compounds from milk thistle support liver and hepatic detoxification function, healthy bile production, and antioxidant defense in liver and gut tissue. Supports the elimination pathways needed for effective microbiome cleansing.

Echinacea Purpurea Herb Extract — Immunomodulatory botanical supporting natural killer (NK) cell activity, macrophage activation, and healthy immune signaling during the rebalancing process.

Echinacea Angustifolia Root — A complementary Echinacea species with distinct but synergistic immunomodulatory activity. Together with Purpurea, provides comprehensive Echinacea-based immune support.

Raspberry Fruit — Provides ellagitannins and anthocyanins with antioxidant and antimicrobial activity supporting the overall formula synergy.

Black Walnut Hull — Contains juglone, a naphthoquinone compound with documented activity against a broad range of bacteria, fungi, and parasites. One of the most recognized botanicals for GI microbial cleansing support.

Black Walnut Leaf — Provides complementary juglone and tannin content alongside the hull for complete black walnut botanical activity.

Lavender Oil — An essential oil with antimicrobial, antifungal, and biofilm-disrupting activity that complements the botanical layer of the formula. Also supports a calming effect on the enteric nervous system.

Oregano Oil — Carvacrol and thymol from oregano oil provide potent broad-spectrum antimicrobial and antifungal essential oil activity, penetrating biofilm matrices and disrupting microbial membrane integrity.

Galbanum Oil — A resinous essential oil from Ferula galbaniflua with antimicrobial and biofilm-disrupting properties that complement the other essential oils in the formula.

Tea Tree Oil — Terpinen-4-ol and other monoterpenes from tea tree oil provide broad-spectrum antimicrobial and antifungal activity with documented biofilm-disrupting properties.

Fumitory Aerial Parts Extract — A traditional European botanical supporting healthy liver and biliary function, healthy bile flow, and digestive tract tone alongside the antimicrobial activity of the formula.

Gentian Lutea Root — One of the most bitter botanicals available, supporting healthy digestive enzyme and bile acid secretion, gastric motility, and the digestive environment that complements the microbial rebalancing activity of the formula.

Other Ingredients: Ethanol (sourced from sugar cane), Vegetable Glycerin. Contains walnut. Free from dairy, gluten, soy, corn, animal products, artificial coloring, and artificial flavoring.

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Storage

Store at room temperature in a cool, dry place. Keep out of reach of children.

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Directions

Begin with 1 drop and gradually increase as tolerated up to 5 drops three times per day, or as directed by your healthcare professional. Place drops directly in the mouth, under the tongue, or in a small amount of water.Children may use 1 drop per 10 lbs of body weight per day, divided into 2 doses, under practitioner supervision.Do not use during pregnancy. If nursing, trying to conceive, taking medications, or have a medical condition, consult your healthcare practitioner before use. Keep out of reach of children.

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Biocidin Liquid by Biocidin Botanicals (Bio-Botanical Research) is a practitioner-trusted broad-spectrum botanical formula available at SOLUDE Wellness & Beauty. It contains a Proprietary Herbal Blend (30 mg per drop) including Bilberry Fruit Extract, Grape Seed Extract (minimum 90% polyphenols), Shiitake Mushroom Extract, Goldenseal Root, Noni Fruit Extract, Garlic Bulb, White Willow Bark, Milk Thistle Seed, Echinacea Purpurea Herb Extract, Echinacea Angustifolia Root, Raspberry Fruit, Black Walnut Hull, Black Walnut Leaf, Lavender Oil, Oregano Oil, Galbanum Oil, Tea Tree Oil, Fumitory Aerial Parts Extract, and Gentian Lutea Root, in a vegetable glycerin and ethanol base. It is designed to support GI and systemic microbial balance, biofilm disruption, selective enhancement of beneficial organisms, immunomodulatory activity, healthy digestion and elimination, liver detoxification, and whole-body vitality. The go-to broad-spectrum botanical formula for integrative and functional medicine practitioners for over 35 years. Laboratory tested and clinically researched. Contains walnut. Free from dairy, gluten, soy, corn, animal products, and artificial ingredients. Not for use during pregnancy. 1 fl oz, approximately 600 one-drop servings. Begin at 1 drop and increase gradually to 5 drops three times daily.