My red tail boa has a RI, i found some medication online will it work?

http://www.bigappleherp.com/Reptaid-Supplement-and-Aid-for-Reptiles -here is the link to the Medication, can you guys please tell me if you think it will help considering it is effective use for bacterial infections and viral infections and much more. i just want to know will it fight off an RI that she had gotten because of previous owner.please click on the link it will take you there.