MSG & Sodium Nitrate are used as flavor enhancers and preservatives in many handled foods, for instance preserved meats and sauces. They are full of salt as well, which can worsen pain or inflammation in some fibro patients.
Fibromites. To reduce the effect of nitrites and MSG on your fibro, avoid prepackaged foods as much as possible and emphasize on whole foods like brown rice, fish, and lentils.
Fibromyalgia 