Biologic treatments work by blocking the body's immune system (which is over-active in people with psoriasis) to better control the systemic inflammation associated with psoriasis. Biologic medications include adalimumab (Humira), adalimumab-atto (Amjevita), brodalumab (Siliq), etanercept (Enbrel), etanercept-szzs (Erelzi), infliximab (Remicade), ixekizumab (Taltz), secukinumab (Cosentyx), and ustekinumab (Stelara).