Zolfresh contains Zolpidem
which is a sedative. Dizziness
are known sideeffects of Zolpidem. I would suggest you continue using it (may be in low dose of 5mg) for few more nights and if the sideffects still persists, you should change to the alternatives like Zaleplon or Zopiclone
,but remember these alternatives themselves are not free from sideeffects.
hope this helps you. Take care.