Use of Herbal Products and Potential Interactions in Patients With Cardiovascular Diseases https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2831618/ 2011 Table 1 Herbal Products to Avoid in Patients With Cardiovascular Diseasesa Herb Purported Use Cardiac Adverse Effect of Interaction Alfalfa Arthritis, asthma, dyspepsia, hyperlipidemia, diabetes Increases bleeding risk with warfarin Aloe vera Wound..