In 17 observational studies, including 35,562 patients, Yoga poses on floor dropout rates due to side effects varied from 0% to 5.7%. No studies Yoga poses on floor reported serious adverse effects. Because St. John’s Wort induces cytochrome P450 3A4 and 1A2 enzymes and induces intestinal wall P-glycoprotein, it can interfere with the metabolism and absorption of numerous medications.
It has been found to reduce levels of digoxin, warfarin, phenprocoumon, HIV protease inhibitors, reverse transcriptase inhibitors, indinavir, irinotecan, theophylline, amitriptyline, cyclosporine Knuppel & Linde, 2004, alprazolam, dextromethorphan, simvastatin, and oral contraceptives. St. John’s Wort should be discontinued two or three weeks prior to surgery because it can affect heart rate and blood pressure during anesthesia.