DRUG INTERACTIONS: This product should not be used with the following medications because very serious interactions may occur: protease inhibitors (e.g., indinavir, saquinavir), non-nucleoside reverse transcriptase inhibitors (NNRTIs such as nevirapine, efavirenz).If you are currently using any of these medications listed above, tell your doctor or pharmacist before starting garlic products.Before using this product, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: isoniazid, medications/herbal products that may increase your risk of bleeding (e.g., "blood thinners" such as warfarin and heparin, anti-platelet drugs such as clopidogrel, nonsteroidal anti-inflammatory drugs-NSAIDs such as ibuprofen, herbals such as danshen/ginger/gingko), drugs removed from your body by certain liver enzymes (such as acetaminophen, chlorzoxazone, cyclosporine, theophylline, calcium channel blockers including diltiazem, azole antifungals including ketoconazole).Aspirin may also increase the risk of bleeding when used with this product. If your doctor has prescribed low doses of aspirin to prevent heart attack or stroke (usually at dosages of 81-325 milligrams a day), you should continue to take the aspirin. Consult your doctor or pharmacist for more details.This product may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use additional reliable birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well.Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

Report Problems to the Food and Drug Administration You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088. Need help identifying pills and medications? Use the pill identifier tool on RxList.