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Written from FDA labels, published studies and buyer reviews. Our own test of each gum comes next. Updated 14 Nov 2026.
People compare gum with Zyn pouches, and 2 mg with 4 mg.
A 4 mg piece puts about twice as much nicotine in your blood as a 2 mg piece. See what the label says, what you absorb and how each compares with a cigarette.
Nicotine gum is an FDA-approved drug in 2 and 4 mg. Zyn is a tobacco product in 3 and 6 mg. Compare strength, speed, price, teeth and where each is sold.