Who is national vitamin company? Who We Are Founded in 1974, National Vitamin Company is a Family owned and operated company. Our superior quality and complete product line have sustained company growth and customer satisfaction! Proud supporters of the U.S. Armed Forces Veterans and Active Duty Military!How do i contact national disability services? Call Us Today: 1-844-778-3900 National Disability helps American workers get SSDI benefits when they become disabled & can no longer work. Social Security Disability Insurance (SSDI) is an earned benefit – most American workers have paid into this program through deductions in their paycheck.Why choose national vitamin as your in house formulator? Our State of the Art in House Lab can provide a variety of product tests to ensure your products meet the highest industry standards! Whether providing your own formula, choosing to have our in house formulator design your product or selecting one of our existing formulas, National Vitamin will help from design to shipment.How do i contact the customer service department? E-mail by clicking here. Call our Customer Service department at toll-free at 1-800-433-0580 Monday through Friday, 7:00 am to 11:00 pm EST, Saturdays from 8:00 am to 11:00 pm EST, and Sundays from 1:00 pm to 9:00 pm EST. Chat with us by clicking the blue "Chat with us” button located in the lower left-hand corner of our website.