Does Noskurf Lotion And Keraglo AD Shampoo Have Any Side Effects?

Hi, I have been given Noskurf Lotion and Keraglo AD Shampoo for Anti- dandruff .I have been using it for last one week, the dandruff has come down but I feel the hair becomes very dry. Does this shampoo and lotion has any side effects like hair fall.. etc.. Also I have been recommended Bontress Lotion for Hair Fall , but i have not bought it as it is very expensive. Is it worth spending on it and is there an alternative for it which is a bit cheap. Please suggest.