Side effects / All
Written from FDA labels, published studies and buyer reviews. Our own test of each gum comes next. Updated 14 Nov 2026.
People ask most about teeth, gums and hiccups.
The label says nicotine gum can loosen fillings and aggravate jaw problems. Studies found it lifts stains, and no study links it to gum recession.
Nicotine gum causes hiccups when you chew too fast or use pieces back to back. Chew until it tingles, then park it. About 1 in 15 users got hiccups in a trial.