Antibiotics: amoxicillin to doxycyline

I've been taking amoxcillin for a suspected Lyme infection for the last week (of a 3-week course), but my new doctor showed me some research that indicates doxycycline is better antibiotic for Lyme and its attendant infections - so he gave me a 3-week prescription. What he forgot to tell me was whether I should finish the amox first or if I can just switch right over to doxy. Anyone have experience with these two antibiotics?

Thanks!

[caregiver222]

There are no contraindications whatsoever to taking two antibiotics and a strong arguement to continue with the first antibiotic as per doctor's orders and simultaneously take the second. There are slight variants in the way both antibiotics attack replication of bacteria. If you fail to complete the amoxcillin you risk developing an amoxcillan resistant strain. Generally medical practice is not to over-use antibiotics to prevent the development of resistant strains. Not completing a full course of antibiotics of any specific type is a good way to develop resistance to that type.

[ITCHY2011]

Talk to a local pharmacist.