Nexium 40 mg is a prescription medication containing esomeprazole, available in a pack of 14 tablets. This medication is manufactured by AstraZeneca and comes in a distinctive purple packaging with white tablets in blister packs. Each tablet contains 40 mg of esomeprazole as the active ingredient. The tablets come in a blister pack format for convenient storage and use. The medication should only be taken as prescribed by a healthcare professional.