Nicotine patches are one of the oldest and best-studied forms of NRT. Understanding how they deliver nicotine, why the steady delivery differs from smoking and vaping, and how to use them effectively makes them more useful as a cessation tool.

The Mechanism: Transdermal Absorption

A nicotine patch is a multi-layered adhesive dressing. The inner layers contain a nicotine reservoir: either pure nicotine in a gel matrix or nicotine dissolved in a polymer membrane. The outer layer is a backing that protects the patch. The innermost contact layer sits against the skin and controls the rate at which nicotine diffuses through the skin.

Nicotine molecules are small enough to pass through the skin's outer layers (the stratum corneum) and are absorbed into capillaries beneath the dermis. From there they enter the bloodstream. The process is slow and steady: producing a relatively flat nicotine level in the blood throughout the day, rather than the peaks and troughs of smoking or vaping.

Patch Strengths and How to Use Them

Why the Steady Delivery Makes a Difference

Smoking and vaping deliver nicotine rapidly: reaching the brain within seconds. This fast delivery creates stronger conditioned responses and more intense cravings. Patches deliver nicotine much more slowly, reaching steady-state blood levels over several hours. This reduces the pleasurable "hit" associated with smoking or vaping, which is part of why patches are better at breaking the behavioural habit while maintaining background nicotine.

Getting the Most from Patches

• Apply to clean, dry, hairless skin: upper arm, chest or back are recommended sites
• Rotate the site daily to avoid skin irritation
• Apply at the same time each day for consistent nicotine levels
• If using a 16-hour patch, remove before bed; if using 24-hour, wear overnight
• Press firmly for 10 to 30 seconds after application to ensure full adhesion
• Combine with behavioural support from NHS Stop Smoking Services for best results

Frequently Asked Questions