| Description | Has received penicillin (calcium salt) from ICI - activity only 150u/mg compared with 800-900 u/mg of stuff from Pfizer - should not spend time using inferior products - needs maximum activit per mg for his purposes - are there any prospects of getting better stuff - British material more painful and does not always dissolve cleanly in water - has Glaxo stuff of 600 u/mg - do they have calcium salt like that. |