Human rights groups say Bahrain has targeted doctors and medical staff who aided mostly-Shi'ite protesters during anti-government demonstrations it crushed in March.
Justice Minister Khaled bin Ali al-Khalifa told reporters 47 medical staff would face charges, including about two dozen doctors.
Bahraini forces stormed the Salmaniyya Medical Centre (SMC), the country's largest hospital in mid-March as it set about quelling protests.
Officials said at the time the hospital had become "overrun by political and sectarian activity." Rights groups accused Bahrain of targeting hospitals to detain wounded protesters.
At least 30 protesters were martyred and hundreds injured in clashes during the protests that gripped the country for weeks in February and March.
Bahrain has arrested more than eight hundreds since protests.
Bahrain's broad crackdown on those involved in the protests has targeted Shi'ite Masjids (mosques), worship places, villages, opposition activists, workers employed at state-owned companies as well as journalists.
Late on Monday, two former parliamentarians from the main Shi'ite opposition group Wefaq were arrested, the group said.
Bahrain's Al Wasat newspaper, seen as the country's only opposition publication, will stop running as of next week, a source close to the paper told Reuters on Tuesday.
Bahrain court last week sentenced four men to death and 3 in life imprisonment accused of killing two policemen.
End item/ 129