Clinical Benefits
Clinical Benefits
Golden Seal and Garlic Oil combines potent therapeutic ingredients that have been clinically studied for their effectiveness against parasitic infections, including both protozoal parasites and helminths (worms). This formulation targets the complex challenges of parasitic infections, which affect billions globally and can cause persistent digestive symptoms, nutrient deficiencies, and immune system compromise.
Garlic (Allium sativum) serves as the primary antiparasitic agent, with extensive clinical evidence demonstrating its effectiveness against multiple parasite species. Garlic contains sulfur-rich compounds, particularly allyl alcohol, which disrupts parasite membranes and affects their survival. Microscopy studies reveal that garlic causes major physical damage to parasites, including breakdown of parasitic suction cups, deformities of internal structures, and internalization of tails that prevent movement [27]. One clinical study showed that garlic extract at just 0.3 mg per milliliter—less than a single clove—could inhibit half of Giardia parasites within 24 hours [28]. Another study demonstrated that 100 µg/mL of garlic oil showed remarkable effectiveness against both Giardia lamblia (98% inhibition rate) and Entamoeba histolytica (74% inhibition rate) [29]. For helminth infections, particularly pinworms, garlic's sulfur compounds interact with parasite enzymes, altering their ability to function. In a large study of 17,146 participants with pinworm infections, garlic suppository treatment showed 74.64% recovery within 3 days, with complete clearance by day 7 [42].
Goldenseal (Hydrastis canadensis) contains berberine, a powerful alkaloid with documented antiparasitic properties. Berberine can inhibit the growth of various parasites including Entamoeba histolytica and Giardia lamblia, while inducing structural changes in parasites such as clumping of chromatin in the nucleus and vacuole formation, both of which lead to parasitic self-destruction [36][37]. Clinical trials have shown that berberine administered orally at 10 mg per kg daily for ten days resulted in satisfactory parasitological cure rates for Giardia infections, comparable to established pharmaceutical drugs [38]. Laboratory studies confirm berberine's ability to stop Entamoeba histolytica growth, causing visible damage to the organism under microscopy with signs of clumped DNA and cellular abnormalities [39][40].
Mullein (Verbascum olympicum) provides additional therapeutic support through its traditional use in respiratory and digestive health applications. While specific antiparasitic studies on mullein are limited in the provided research, this herb has historically been valued for its anti-inflammatory and soothing properties, which may help address the tissue damage and inflammation commonly associated with parasitic infections.
The cold-pressed olive oil base serves as more than just a carrier, providing essential fatty acids and fat-soluble vitamin E that support overall digestive health and nutrient absorption. Vitamin E oil acts as a powerful antioxidant, helping to protect tissues from the oxidative damage that can occur during parasitic infections and the subsequent immune response. These supportive ingredients create an optimal delivery system for the active compounds while providing additional health benefits during the recovery process.
[27]>https://pmc.ncbi.nlm.nih.gov/articles/PMC6196658/
[28]>https://pubmed.ncbi.nlm.nih.gov/11101670/
[29]>https://link.springer.com/article/10.1007/s12210-023-01173-1
[36]>https://pubmed.ncbi.nlm.nih.gov/1796883/
[37]>https://pmc.ncbi.nlm.nih.gov/articles/PMC9609421/
[38]>https://jamanetwork.com/journals/jamapediatrics/article-abstract/506103#google_vignette
[39]>https://pubmed.ncbi.nlm.nih.gov/1796883/
Ingredients
Cold-pressed olive oil
Hydrastis canadensis (golden seal) root/leaf
Verbascum olymicum (mullein) root/leaf
Allium sativum (garlic)
Vitamin E oil
Instructions
Instructions
Dosage
Apply a small amount topically to the perianal area with clean hands
Duration
4 weeks
Warnings
Always read the label
Discontinue use if sensitivity occurs
Avoid contact with eyes: flush with water
For external use only: if ingested, seek medical advice
Contraindications
Contraindications
This supplement may interact with the following categories of medications, as well as specific active ingredients.
• Medications changed by the liver - refer list
• Medications for HIV/AIDS
• Medications for diabetes
• Medications for high blood pressure
• Medications that slow blood clotting
• Saquinavir
• Sofosbuvir
• Tacrolimus
• Warfarin
• Cyclosporine
• Medications for cancer
• Selumetinib
• Digoxin
• Losartan
• Medications moved by pumps in cells - refer list
• Metformin
• Sedative medications
Further details are provided below.
Please note that medications may be sold under different brand names, so check the listed active ingredients against your medication packaging.
Major Interactions
Moderate Interactions
Isoniazid
Garlic might reduce how much isoniazid the body absorbs. This might decrease how well isoniazid works.
Medications changed by the liver
• Cytochrome P450 2E1 substrates
Some medications are changed and broken down by the liver. Garlic might change how quickly the liver breaks down these medications. If you are taking medications metabolised by the liver, monitor for any changes in how your medication affects you.
• Atorvastatin
• Simvastatin
• Amlodipine
• Diltiazem
• Cyclosporine
• Tacrolimus
• Midazolam
• Alprazolam
• Rivaroxaban
• Some HIV antiretrovirals
Medications for HIV/AIDS
• Protease inhibitors
Taking garlic might decrease the amount of HIV/AIDS medication the body can absorb. This could decrease the effects of some medications used for HIV/AIDS.
Medications for diabetes
• Glyburide
• Glipizide
• Insulin
• Sitagliptin
• Empagliflozin
• Semaglutide
• Dapagliflozin
Garlic might lower blood sugar levels. Taking garlic along with diabetes medications might cause blood sugar to drop too low. Monitor your blood sugar closely.
Medications for high blood pressure
• Amlodipine
• Ramipril
• Perindopril
• Metoprolol
• Losartan
• Hydrochlorothiazide
Garlic might lower blood pressure. Taking garlic along with medications that lower blood pressure might cause blood pressure to go too low. Monitor your blood pressure closely.
Medications that slow blood clotting
• Heparin
• Rivaroxaban
• Apixaban
• Dabigatran
• Clopidogrel
Garlic might slow blood clotting. Taking garlic along with medications that also slow blood clotting might increase the risk of bruising and bleeding.
Saquinavir
• Fortovase, Invirase
Saquinavir is a medication taken for HIV. Garlic might decrease how much saquinavir goes into the blood. This might decrease the effects of saquinavir.
Sofosbuvir
• Sovaldi
Garlic might increase how quickly the body gets rid of sofosbuvir. This might decrease the effects of sofosbuvir.
Tacrolimus
• Astagraf
• Used for: organ transplant anti-rejection
Garlic might decrease how quickly the liver breaks down tacrolimus. Taking garlic with tacrolimus might increase the effects and side effects of tacrolimus.
• Jantoven
• Used for: blood thinning, clot prevention
Warfarin is used to slow blood clotting. Garlic might increase the effects of warfarin. Taking garlic along with warfarin might increase the chances of bruising and bleeding. Be sure to have your blood checked regularly. The dose of your warfarin might need to be changed.
Cyclosporine
• Restasis
• Used for: organ transplant, autoimmune conditions
Taking large amounts of vitamin E along with cyclosporine might increase how much cyclosporine the body absorbs. This might increase the effects and side effects of cyclosporine.
Some medications are changed and broken down by the liver. Vitamin E might change how quickly the liver breaks down these medications. If you are taking medications metabolised by the liver, monitor for any changes in how your medication affects you.
Medications for cancer
• Cyclophosphamide
• Chlorambucil
• Melphalan
• Busulfan
• Temozolomide
Vitamin E is an antioxidant. There is some concern that antioxidants might decrease the effects of some medications used for cancer. If you are taking medications for cancer, check with your healthcare provider before taking vitamin E.
Vitamin E might slow blood clotting. Taking vitamin E along with medications that also slow blood clotting might increase the risk of bruising and bleeding.
Niacin
Taking niacin along with the drug simvastatin can increase good cholesterol levels. Taking niacin plus simvastatin along with vitamin E and other antioxidants can decrease the effects of niacin and simvastatin on good cholesterol levels. It is unknown if vitamin E alone decreases the effects of niacin plus simvastatin on good cholesterol levels.
Selumetinib
• Koselugo
Selumetinib, a drug used for cancer, contains vitamin E. Taking selumetinib with vitamin E-containing supplements can result in an unsafe dose of vitamin E. This could increase the risk of bleeding.
Warfarin is used to slow blood clotting. Vitamin E can also slow blood clotting. Taking vitamin E along with warfarin can increase the chances of bruising and bleeding. Be sure to have your blood checked regularly. The dose of your warfarin might need to be changed.
• Used for: heart failure, atrial fibrillation
Taking goldenseal with digoxin might cause slight increases in digoxin levels in the body. If you take digoxin, talk to your healthcare provider before taking goldenseal.
Losartan
• Cozaar
• Hyzaar
• Used for: high blood pressure, heart failure
Goldenseal contains berberine, which might change how quickly the body breaks down losartan. Taking goldenseal while taking losartan might change the effects of losartan.
• Glipizide
• Phenytoin
• Losartan
Some medications are changed and broken down by the liver. Goldenseal might change how quickly the liver breaks down these medications. If you are taking medications metabolised by the liver, monitor for any changes in how your medication affects you.
• Tramadol
• Metoprolol
• Fluoxetine
• Paroxetine
• Tamoxifen
• Amitriptyline
Medications changed by the liver
• Cytochrome P450 2E1 substrates
Goldenseal might lower blood sugar levels. Taking goldeneal along with diabetes medications might cause blood sugar to drop too low. Monitor your blood sugar closely.
Goldenseal might lower blood pressure. Taking goldenseal along with medications that lower blood pressure might cause blood pressure to go too low. Monitor your blood pressure closely.
Medications moved by pumps in cells
• Dabigatran
• Cyclosporine
• Fexofenadine
• Loperamide
• Some HIV antiretrovirals
Some medications are moved in and out of cells by pumps. Goldenseal might change how these pumps work and change how much medication stays in the body. In some cases, this might change the effects and side effects of a medication.
Goldenseal might slow blood clotting. Taking goldenseal along with medications that also slow blood clotting might increase the risk of bruising and bleeding.
Goldenseal might decrease the amount of metformin in the body. Taking goldenseal with metformin might decrease the effects of metformin.
Pentobarbital
Pentobarbital is a medication that can cause sleepiness. Goldenseal contains berberine, which might also cause sleepiness and drowsiness. Taking goldenseal with pentobarbital might cause too much sleepiness.
Sedative medications
• Diazepam
• Alprazolam
• Temazepam
• Zolpidem
• Zopiclone
• Promethazine
Goldenseal might cause sleepiness and slowed breathing. Some medications, called sedatives, can also cause sleepiness and slowed breathing. Taking goldenseal with sedative medications might cause breathing problems and/or too much sleepiness.
Goldenseal contains berberine, which might decrease how quickly the body breaks down tacrolimus. Taking goldenseal with tacrolimus might increase the effects and side effects of tacrolimus.
Minor Interactions
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• Garlic oil demonstrates 98% effectiveness against Giardia lamblia and 74% against Entamoeba histolytica in clinical studies
• Goldenseal's berberine achieves parasitological cure rates comparable to pharmaceutical drugs for Giardia infections
• Garlic suppository treatment shows 74.64% pinworm clearance within just 3 days in large-scale clinical trials