One of Antigua [1]’s most interesting stores is La Tienda de Doña Gavi (3a Avenida Norte #2, tel. 7832-6514, noon–7 p.m. daily), where you can pick up a number of natural remedies, including Jacameb, a powerful concoction created from the jacaranda flower that does the trick on amoebas and assorted other parasitic problems. (Friendly Doña Gavi also serves the tastiest mango ice cream I’ve ever had.)
Links:
[1] http://www.moon.com/destinations/guatemala/antigua