Nicorette invisi 25mg patch step 1 is 44 more effective than the original nicorette step 1 patch it is most suitable for you if you are a regular smoker who smokes throughout the day as well as being the strongest patch available the semi transparent nicorette invisipatch helps you to quit by delivering a continuous controlled dose of nicotine into your body to help relieve cravings and withdrawal symptoms the nicotine is released through your skin over 16 hours it is absorbed quite slowl