Kitkat is present in India for a very long time and I have been eating kitkat for almost a decade and the quality served by nestle India is still top notch.
Kitkat is tasty, great packaging, pricing is also good and affordable and it is a nestle India product so we get a trsuty brand.
Kitkat never got accused of anything bad so no problems regarding that. However children and even adults should eat any type of chocolate in normal quantity.
Kitkat also offers different varities. Overall a great item.