Nexium 40mg is a prescription medication containing esomeprazole, available in a package of 14 tablets. Each tablet contains 40mg of the active ingredient esomeprazole, manufactured by AstraZeneca. This medication comes in a purple-colored box containing 14 tablets arranged in 2 blister packs of 7 tablets each. The product is manufactured by AstraZeneca, a leading pharmaceutical company. As this is a prescription medication, it should only be taken under the guidance and supervision of a healthcare professional.