This pose opens the hips and decompresses the spine- it can be hard on the pelvis and knees. It could aggravate sciatica.
This pose might be for you...or it might not. Listen to the wisdom of the body when choosing to practice a yoga pose. Move out of a pose if it feels too risky or delve further into the pose to increase the intensity of the stretch.
There's always more to learn about yoga and in turn, learn about yourself.