There is no specific limit to the amount of glutamate to consume on a low glutamate diet. What works for one person may not work for the other.

I find it helpful to have a good journal (with symptoms) recorded to see if there are certain foods or amounts of foods (or combinations of different foods) that I react with.

Ideally, it would be great to see a dietician who specializes in this, however, I have not been successful with this. The dietician I saw when diagnosed with Celiac was so excited for me when I told her of my findings with glutamate-- but she said I would likely need to see a Functional Dietician with a Functional Doctor to try and come up with a specific dietary plan for me, because she did not have any experience or training with this (and she herself has Celiac and was wonderful!).

The one thing I would be very aware of if going on a low glutamate diet: You still need to get adequate protein.... Which can be challenging on this diet. I at first researched how much protein a person my age with my height and weight as a female would need minimally in a day (I did't want muscle wasting because I hadn't consumed enough protein!) My meals were barebones simple for a couple of months (plain sweet potatoes or a little rice for each meal, salad (romaine) or steamed zucchini for each meal, one hardboiled egg for lunch and another for dinner, and a cup of chicken breast cooked in the instant pot for dinner (when it is ready I take it out immediately, and don't let it sit in the broth for long. I have read that cooking in the instant pot can also cause an increase in glutamate-- I haven't had any issues so I'm sticking with it). Everything I cook is plain. I'll add a little salt and am gradually adding some fresh spices (no dried spices). I am now eating a serving of cod or a little ground burger for dinner. I've also added a little almond butter and rice cakes for a snack. I have a cup of frozen wild blueberries after dinner. I can tolerate baby spinach, carrots, a banana, an avocado, apple or peach with no issues (these can be histamine aggravating though). I add olive oil to each meal (on my sweet potato and salad or meat). I've had a duck egg for breakfast and lunch, scrambled with no problem (considerably more glutamate than a chicken egg). I've tolerated it. I just don't overdo. I try a little at a time and if I do okay, especially with the veggies, I pour it on. I need the vitamins.

Having enough healthy fat is also super important! I'm working on increasing that as well. Olive oil and avocados and macadamia nuts are working for me (they are low in glutamate and actually contain a compound that helps to regulate glutamate.... I just discovered that and they taste amazing). These are really my only fat sources right now which may not be enough as I'm still losing weight. (I'm at a healthy weight and would like to stay where I am but I still seem to be losing a pound or so each month... I have a few pounds that I can safely lose but I've got to be careful.) When you eliminate dairy and most red meat and nuts it can be tricky to find protein and fat.

I'm still learning.... There is so much to learn. I am so sorry for all you are going through. Nerve pain is so challenging, I can empathize. I hope that this might be helpful to you... If you would like to try a low glutamate diet it would be best to find a dietician who can help you so that you make sure that you're getting all of the vitamins, fats, carbs and proteins that you need. I understand if this is not possible though. I cannot afford to see a functional doctor, so I am navigating this on my own trial and error. I'm glad that some of this has been helpful to you, at least food for thought! I wish you all the best on your health journey, and I hope you are able to find relief from your symptoms soon.