3,396 people have signed the petition to reject a new way of hiding MSG in foods in just 3 weeks.
Of those who made comments, the strongest by far with more than 700 responses is that consumers have a right to know what is in our food:
Adding it without our knowledge is just criminal – John
We have a human right to know what is in the food we eat - Monique
If they need to "hide it" we have a problem!!! - Renette
Some people said what specific reactions they have to MSG. These were the most often reported:

And the best answer to Reason for Signing?
I’m human - Daniel
Please sign the petition if you haven’t done so yet
More information about reactions to MSG
Factsheet 621 MSG, MSG boosters, flavour enhancers and natural glutamates - about MSG in all its guises
Factsheet 635 MSG boosters: Ribo Rash (ribonucleotides) 627, 631 - about MSG boosters that are meant to boost the flavour enhancing effects of MSG - but in our experience, they also boost the chances of getting an adverse reaction to MSG, including true IgE-mediated allergies.
Blog post about what MSG can be called these days - 129 ways to add MSG and fool consumers
You can request our glutamate mistakes information sheet