Si Wu Tang - Evergreen Extract Powder

I notice there's some confusion in the source description. The title mentions "Si Wu Tang" (a classical formula), but the content describes it as a "single Chinese herb" rather than a multi-herb formula. Si Wu Tang is traditionally a 4-ingredient blood-tonifying formula. Could you please provide the correct product description? I need to know: 1. Is this actually the Si Wu Tang formula (4 herbs) or a single herb extract? 2. If it's the formula, what are the ingredients and their amounts? 3. What are the TCM actions and clinical applications? 4. What's the recommended dosage? The current description appears to be a template placeholder rather than the actual Si Wu Tang product information. I need the complete product details to create the proper HTML structure.