This power clouded the target's mind, causing them to slow down both mentally and physically. It was the milder version of three poison-inspiring Force powers, the other ones being Force Affliction and Force Plague. Practitioners of this power included the Jedi Knights Juhani and a Jedi.
Force Affliction was a variant of Force Slow. Affliction worked much like a fast-acting poison, quickly debilitating the target. The effects of affliction worsened over time and may cause death if the user is strong enough in the Force.
Force Plague was a more powerful version of Force Affliction. Plague worked like a fast-acting toxin, horribly debilitating its victims. The effects of Plague continued to worsen over time. Darth Traya and Darth Nihilus attempted to use this technique against Meetra Surik.
In the expansion Star Wars: The Old Republic: Shadow of Revan of the game Star Wars: The Old Republic, Revan uses a Force power named Mass affliction which might be a variant of Force Affliction. The effect is the same and drastically slows down the player and all companions.