Benzylpenicillin of penicillin allergy. Use during pregnancy is generally safe. It is in the penicillin and β-lactam class of medications. Benzylpenicillin was discovered in 1929 by Alexander Fleming and came into commercial use in 1942. It is on the World Health Organization's List of Essential Medicines, the most effective and safe medicines needed in a health system. The wholesale cost in the developing world is about US$0.24–2.72 per day. In the United States a course of treatment costs $100–200. As an antibiotic, benzylpenicillin is noted to possess effectiveness mainly against Gram-positive organisms. Some Gram-negative organisms such as "Neisseria gonorrhoeae" and "Leptospira
Valentine Morris Valentine Morris Valentine Morris (27 October 1727 – 26 August 1789) was a British landowner and politician, responsible for developing the picturesque woodland walks at Piercefield in the Wye Valley, and the Governor of St. Vincent from 1772 to 1779. Born in Antigua, in the West Indies, Valentine Morris was the son of Colonel Valentine Morris (c 1678-1743), a sugar plantation owner and merchant who claimed descent from the Walter family of Monmouthshire and who, in 1740, bought Piercefield House near Chepstow. On his father's death, the younger Valentine Morris, who was then attending school in London, inherited Piercefield. In