hai sir, my age 22, i am getting severe headache on left side only,pain starts from left backside of neck and it continues till the left eye. On left side at the middle of the head pain is very severe..I was consulted one doctor, he gave medicine like Naprodom 250 and Mericobal viva, i want to know that is it ok to continue the usage of those tablets or is there any side effects ? Please give me the solution sir....