Penicillin G Potassium (200 mg),
https://www.manchesterbeacon.org/shop/rw2-1502508-penicillin-g-potassium-200-mg-306246
https://www.manchesterbeacon.org/web/image/product.template/306246/image_1920?unique=0e83fa8
This Penicillin is guaranteed a G with the use of Potassium and directly supplied to your lab by Gentaur's warehouse.
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