Sleeping is potentially harmful and is a symptom based treatment. I This insomnia is  due to your performance anxiety. You need to work out your problem. Proper planning, maintaining schedule and removing negative thoughts related to the outcome of exams are necessary. If needed consult a clinical psychologist for necessary help.

All sleeping pills are potentially harmful. They can cause side effects which include memory impairment and addiction. Please do not take any medication for sleep without a doctor's prescription. You may try the following steps: Have a hot water bath before going to bed, have a glass of hot milk with sugar before you sleep, use your bedroom only for sleep and not for work, stop using your mobile in the evenings, do not watch news or exciting programmes on the TV after 6 pm, do some mild exercise like a walk for half hour, practice regular pranayama and meditation. These steps would help you sleep better. If you still feel you require medicines for sleep, you may try alternative systems like Homeopathy or Ayurveda. Modern medicine drugs have the potential to cause addictions. You should take them only if a psychiatrist advises you

You should not take sleeping tablets by yourself.There are much better alternatives.

Its the Anxiety which has to a dressed not the  temporary solutions. Do seek a professional guidance which might help you in resolving other issues too. Take care

Hi there, Please consult about your sleep issues with a Psychiatrist in person. No pharmacy is going to give you the medicines you've mentioned without a prescription. If they do, it's Illegal. Isolated sleep issues are almost unheard of. Get yourself evaluated for underlying problems like anxiety or depression which might be causing end sleep issues. The psychiatrist will prescribe you the right pill to be taken for the right duration. Good luck.