In a recent study, among smokeless tobacco users not wanting to quit, the 4 mg lozenge and tobacco-free snuff both reduced use. 12% of smokeless users were tobacco-abstinent at 6 months with both products. These users also received behavioral counseling.
Ebbert, J. O., Severson, H. H., Croghan, I. T., Danaher, B. G., & Schroeder, D. R. (2013). Comparative effectiveness of the nicotine lozenge and tobacco-free snuff for smoke- less tobacco reduction. Addictive Behaviors, 38, 2140–2145.