<p>Reduced antihypertensive effect of ACE inhibitors, angiotensin II receptor antagonists and &beta;-blockers. Slight reduction in blood glucose concentration in patients with DM receiving certain antidiabetic agents (e.g. glyburide, metformin). Reduced diuretic effect of furosemide and thiazides. May increase toxicity of lithium and methotrexate. May increase risk of bleeding with antiplatelets, anticoagulants, SSRIs, corticosteroids.</p>