No substitutions, no supplements, no nothing, kasi you're not quitting, you're just jumping from one ship to another. The most effective I know and always kong nirerecommend to my friends and family ay to simply go cold turkey. Kasi kung adik ka sa yosi at nagvape ka, maaadik ka lang sa vape, edi balik ka ulit sa loop from "how do I quit smoking" to "how do I quit vaping"