There is a lot of conflicting information online about whether this mushroom is safe to eat. The short answer is, no it is not poisonous at all -- meaning, it will not kill you if you eat it. It does contain toxins, though, that will cause severe gastric upset if the mushroom is eaten raw. Some people report the severe gastric upset even after it is cooked. However, there are no studies or even statistics on how common that is, or widespread. So, it is up to you to decide whether to eat it or not. Many, many people eat and have been eating it for centuries, and it is unknown if any had issues with it. It didn't stop anyone from consuming it previously. Best practice is to eat a little bit, see how your body reacts, and go from there. It could be the next best mushroom in your foraging portfolio. You could regret ever hearing the mushroom even exists. Be smart, be mindful, be cautious.