Filipendula ulmaria In 1897, Felix Hoffmann created a synthetically altered version of salicin, derived from the species, which caused less digestive upset than pure salicylic acid. The new drug, formally acetylsalicylic acid, was named aspirin by Hoffmann's employer Bayer AG after the old botanical name for meadowsweet, "Spiraea ulmaria". This gave rise to the class of drugs known as non-steroidal anti-inflammatory drugs (NSAIDs). A natural black dye can be obtained from the roots by using a copper mordant. A tea made from "Filipendula ulmaria" flowers or leaves has been used in traditional Austrian herbal medicine for the treatment of rheumatism, gout, infections,
Clavulanic acid Clavulanic acid Clavulanic acid is a β-lactam drug that functions as a mechanism-based β-lactamase inhibitor. While not effective by itself as an antibiotic, when combined with penicillin-group antibiotics, it can overcome antibiotic resistance in bacteria that secrete β-lactamase, which otherwise inactivates most penicillins. In its most common form, the potassium salt potassium clavulanate is combined with: Clavulanic acid was patented in 1974. For the treatment of pyelonephritis during pregnancy, and for the treatment of pyelonephritis caused by gram-positive organisms, amoxicillin or amoxicillin-clavulanate potassium is preferred. The name is derived from strains of "Streptomyces clavuligerus", which produces clavulanic acid. Clavulanic acid