Aminoglycosides are excreted by glomerular filtration and have a serum half-life of 2 to 3 h; the half-life increases exponentially as the GFR falls (eg, in renal insufficiency, in the elderly).
Madagascar is the world's major natural vanilla producer, accounting for about 75% of production. Cloves are the third main export crop, grown mostly by smallholders. Production follows a 4-year cycle with 2â3 years of high output followed by one year of low production.
Plants and animals unique to Madagascar include the Rosy Periwinkle (Vinca rosea) the Didereaceae family of cactus-like plants, the Black Lemur, (Eulemur m. macaco), Suraka Silk Moth (Antherina suraka), and Labordâs Chameleon (Furcifer labordi).