It sounds like your difficulty sleeping after finishing NShine Nt tablets could be related to how your body is adjusting to stopping the medication.

• Medication Effects: NShine Nt contains mecobalamin, pregabalin, and nortriptyline. Pregabalin and nortriptyline affect the nervous system and can influence sleep patterns. When you stop taking them, your body may need time to adapt, which can cause sleep disturbances.

• Withdrawal or Rebound Symptoms: Sometimes, stopping these medications leads to rebound insomnia or mild withdrawal symptoms, which might explain your current sleep issues.

• Underlying Condition: The condition for which you were prescribed these tablets, such as nerve pain or mood-related issues, might still be affecting your sleep if it hasn’t fully improved.

If your sleep problems continue or get worse, I recommend consulting the doctor who prescribed your medication. They can evaluate your symptoms and guide you on the best way to manage your sleep safely.