I am just inserting data in codeigniter controller part at pastebin http://pastebin.com/KBtqrAkZ
public function add_product() { $this->lang->l
Theres a simple solution, you can redirect to some other page after adding product, like:
redirect(base_url(). "yourcontrollername/index");
Doing this will remove the post data and data would not be re-added to database.