It is best to avoid taking Telekast-F (which contains fexofenadine and montelukast) without consulting your obstetrician. While some of these components can be used during pregnancy, this specific combination is not typically the first choice and requires professional supervision. Since your prescribed cough syrup isn't working, please contact your doctor or OB/GYN. They can safely evaluate your cough and find a suitable, pregnancy-safe treatment to help you get some well-deserved rest.
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Is it safe to take Telekast-F tablets for a severe cough while 19 weeks pregnant, especially since my prescribed cough syrup is not working?