You can use up to $700 (for patients with complex chronic conditions) or $500 (for patients with non-complex chronic conditions) yearly per patient from your MediSave or your immediate family members' MediSave.
Your immediate family members include your spouse, children, parents, grandchildren and siblings. To use your grandchildren's or siblings' MediSave, you must be a Singapore Citizen or Permanent Resident. The same yearly withdrawal limit applies for approved chronic disease treatments and health screening.