Neither valerian, hops, or passionflower are homeopathic -- they're herbal medicines given in material quantity, and sedating to boot.
Interactions can happen that wouldn't happen with truly homeopathic remedies. Valerian can also interfere with certain liver enzymes that process zoloft
; the others are not known to do this. None of these herbals is known to specifically help ocd. Zoloft (sertraline