As an Amazon Associate I earn from qualifying purchases.
Pack Year Calculator is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.
Which links are affiliate links
Only the links in the clearly labelled box about nicotine replacement products on the calculator pages (English, Deutsch). They open a general Amazon search, not a specific product.
All other links on this site (to guidelines, studies and quit-smoking services) are ordinary links and earn nothing.
What this means for you
The price you pay on Amazon is the same whether or not you use our link.
Affiliate income does not influence the calculators, the screening criteria or the medical information on this site.
We show no prices, ratings or product data from Amazon. Prices and availability are shown only on Amazon.
Before using nicotine replacement products, read the package leaflet and ask a pharmacist or doctor.