Explanation – The frequency of drugs are given based on its toxicity or the side effects in the body. All drugs have certain half-life in which there action is maximum and after that the drug is removed through the urine primarily.
Different people react differently to a drug and hence the doctors prescribe the anti-tablets for the side effects occurring. The drug for cold is prescribed after four hours because its effect gets reduced and has to be removed from the body.
Some people base what they eat on how it tastes. Many people believe that if it tastes good why not? And also because many people are uneducated when it comes to food and health.