Vitamin K is contradicted with blood thinners, people who are on a aspirin regimen, and or have liver and kidney damage. If you are pregnant, nursing, taking any medications or planning any medical procedure, consult your doctor before use. Discontinue use and consult your physician if any adverse reactions occur. Keep out of the reach of children. Foil - Tamper resistant seal. If printed heat induced seal appears to be tampered with, do not use product.