Aloha Julie, YES!!! Your gut steered you to the right ONE! The Comfrey root is so high-performance and fast-acting - the perfect choice for a painful ankle sprain. We are so grateful for your candid feedback. We know the power of this plant and are most indebted to its pain relief, bone restoration and expedited healing, however it is stories like yours that light us up and keep us innovating in the herbal plant medicine arena. And yes, the application can be a bit tricky, but like you said, definitely worth it! We have a number of tutorial videos on 'how-to-apply the Comfrey Cast' to make this experience a bit smoother for first-timers. Much gratitude for your inspiring share!