What isthe difference in TEVA USA and LUP pills?

I work in a pharmacy as a technician and they are the same drug and strength, just different manufacturers. Teva is a manufacturer and the LUP means Lupin, another manufacturer. Losartan is a generic and when a drug becomes available in the generic many different manufacturers can produce the drug. Same ingredients, same drug. The manufacturers have to get it approved by the FDA in order to sell it to pharmacies across the U.S. and even the world. Don't worry, you'll be fine.