Science

One last thought, theoretically is Zantac itself was safe, despite it having the ranitidine. It was specifically Zantac that was left exposed to heat or sunlight, So barring any shipping boxes being left out baking in the sun, your own usage of it may have been within a safe range.

However if you lived in a warm area and maybe kept it with you on your person or in the backpack that was often left outside, you may want to actually look into this class action lawsuit for yourself, if there is one still.

Also I checked and it was 10 total types from the studies. Bladder cancer, liver cancer, stomach cancer, pancreatic cancer, esophageal cancer, colon cancer, kidney cancer, prostate cancer with a diagnosis under the age of 69, lung cancer (never smokers only), and breast cancer.

Finally for what it's worth, while the correlation is higher, so remember that it is the most sold one in the world, and the total suspected cases are under 100,000. So it is a relatively small percentage, enough to be worth knowing and monitoring, but not something to have looming over you!