I have been taking Cozaar (Losartan) for several years. Recently Walgreens changed my prescription to a round white tablet with H H imprinted on it. Under the name is PACK. These tablets differ from the tablets that I have been getting ... the oval blue/green marked 9 3 & 7365 (TEVA). Can anyone give information on who makes these tablets. After taking these tablets for 2 weeks my BP was 90 over 130 and I was experiencing side effects that I never had. My BP with the TEVA brand was 78-82 over 120-140 with no noticable side effects. My insurance will only pay for the lowest cost prescriptions ... and Walgreens has "made a corporate decision" to only supply this brand. These brands are do not produce the same results. Any advice would be greatly appreciated.