Dr. Schiffmann's Spike should not be taken by anyone with a known hypersensitivity or allergy to any of its ingredients, including curcumin, astaxanthin, nattokinase (derived from fermented soybeans), or piperine. The product is not intended for pregnant or breastfeeding women. Anyone taking blood-thinning, blood pressure-lowering, blood sugar-lowering, or other prescription medications should consult a healthcare professional before use, as nattokinase may influence the blood's flow properties.
People with blood clotting disorders or those scheduled for surgery should only consider taking the product after consulting a healthcare professional.