Friend of the Followers

 is a unmarked quest in Fallout: New Vegas.

Quick walkthrough
In order to supply the Followers of the Apocalypse with medical supplies, you either have to spare some of your own Med-X, Rad-Away or Fixer. 10-15 packs of each should do the trick. For a constant supply talk to James Garrett at the Atomic Wrangler about medical supplies and convince him to deal with the Followers and report back to Julie, then report to James again and again to Julie to finish the Side Quest.

This quest can make you accepted with the Followers of the Apocolypse. This will gain you access to a lab coat with + medical skill and cheap magazines that can be purchased from Julie Farkas. Arcade Gannon will also agree to follow you without having to pass the +75 speech check.