At 71, taking Metoprolol XL for blood pressure while following a healthy diet, doing yoga, and walking regularly, it may not be necessary to add any medication or supplement like Patanjali BP Grit, as you are already on an effective regimen and maintaining good lifestyle habits. While BP Grit is unlikely to cause serious problems, its benefits are uncertain, and herbal ingredients can sometimes interact with medications, so always consult your doctor before starting anything new.