SAN JUAN, Puerto Rico--(BUSINESS WIRE)--Back to school, changes in temperature and the arrival of autumn make children more vulnerable to colds. Recently Efficient Laboratories, a Puerto Rican company dedicated to the distribution of its own health care brands, launched a new product, ROMPE PECHITO ®, an over-the-counter medicine for children to relieve cold symptoms. This product is based on a natural ingredient formula with honey and elderberry extract that has proven effective in treating sy