You acting to defend vitamin claims actually proves my point.

The word “essential” is chosen to lead you subconscious through the path of if we know that humans need vitamins to survive, and this snake oil has vitamins, then humans must need this exact product to survive.

This is meant to implant a suggestion and not stand up to scientific scrutiny.

When product marketing calls out stuff like “essential vitamins” it is technically true, but it is generally a horrible and/or unnecessary source compared to just eating normal foods.