Hi mama! I'm not sure what specific "dexa" you're asking about, may maraming medical terms na ganyan, pero if it's a medicine or treatment your doctor mentioned, mas maganda talaga na you ask your doctor directly about what it's for and kung safe para sa'yo or sa baby. Doctors lang talaga ang makakapag-explain ng tama based sa iyong specific situation, hindi ako dapat mag-advise dito. Anong context po? Maybe I can help point you sa right direction!