Technically, yeah, it is a "nutrient," and your insurance might not pay up.

Deplin didn't do anything for me, so I stopped when my samples (3 weeks) were used up...never tried to get insurance to pay for a prescription.

Give Deplin a shot, though...I know it is different for everyone. Just don't wait too long if you see no improvement. Worsening depression is bad news, as I keep discovering.