Delivers nicotine without the tar, carbon monoxide, and other combustion products that cause most smoking-related disease. The goal is not zero nicotine — it is eliminating the delivery mechanism that kills. Five formats exist: patch, gum, lozenge, inhaler, nasal spray.
Combination therapy — a patch for steady baseline plus a short-acting form (gum or lozenge) for breakthrough cravings — is more effective than any single format. Both are widely available.