Robins and pigeons do it all the time...well, each spring, anyhow). most birds can do it from 1-4 times per year. In the wild, birds lay eggs twice a yr.(House Wrens will build as many nests as they can before the season changes.) Yes, a duck can lay eggs more than one a year. I have ducks and chickens that lay eggs daily. (I know that some birds, if their eggs are damaged or ruined in the early stages of nesting, will lay more eggs, most often in a different nest location. Robins and pigeons do it all the time...well, each spring, anyhow).
Nystatin (originally named Fungicidin) is a polyene antifungal medication that is derived from a bacterium, Streptomyces noursei. It was discovered by Rachel Fuller Brown and Elizabeth Lee Hazen in 1950.
Nystatin, sold under the brandname Mycostatin among others, is an antifungal medication. It is used to treat Candida infections of the skin including diaper rash, thrush, esophageal candidiasis, and vaginal yeast infections. It may also be used to prevent candidiasis in those who are at high risk. Nystatin may be used by mouth, in the vagina, or applied to the skin. Common side effects when applied to the skin include burning, itching, and a rash. Common side effects when taken by mouth include