<Tr> <Th> Bioavailability </Th> <Td> 25 to 50% </Td> </Tr> <Tr> <Th> Protein binding </Th> <Td> 72% </Td> </Tr> <Tr> <Th> Metabolism </Th> <Td> Hepatic (CYP2D6) </Td> </Tr> <Tr> <Th> Biological half - life </Th> <Td> 13.9--43.4 hours </Td> </Tr>

What is the difference between pheniramine maleate and chlorpheniramine maleate