Amazon’s typical statement on the matter is this: “Amazon’s Choice is just our recommendation, and customers can always ask for specific brands or products if they choose."
this product is showing Original but which item i bought from Amazon pantry there original not shown. only shows Amazon pantry .pic at post no 16 (previous post)
That does not mean it's a fake product. The 100% purchase protection guarantees 'easy returns'. That toothpaste from Amazon Pantry is non-returnable due to hygiene or consumable nature. This is the reason why they aren't showing 100% purchase protection over that product.
A toothpaste is a pantry item and would never be sold fake, selling fake toothpastes or any pantry item is very unlikely on Amazon. Their reputation is far more important than these cheap tactics.