Accent seasoning is 99% pure monosodium glutamate (MSG), and for the vast majority of people, it is not harmful in the amounts typically used in cooking. The FDA classifies MSG as “generally recognized as safe,” and large-scale safety reviews have consistently found that it poses no health risk at normal dietary levels. That said, there are a few nuances worth understanding, especially around sodium, sensitivity, and portion size.
What Accent Actually Is
Accent is essentially pure MSG in a shaker. Unlike many seasoning blends that contain anti-caking agents, artificial fillers, or hidden sugars, Accent is a single ingredient: monosodium glutamate. MSG is the sodium salt of glutamate, an amino acid that occurs naturally in dozens of common foods. Parmesan cheese contains about 1,680 milligrams of free glutamate per 100 grams. Soy sauce has up to 1,700 mg. Dried shiitake mushrooms clock in at 1,060 mg. Even fresh tomatoes contain around 250 mg per 100 grams.
When you sprinkle Accent on food, you’re adding the same compound your body already encounters in cheese, mushrooms, cured meats, and fermented sauces. The difference is concentration and control: a dash from a shaker delivers a precise amount rather than the variable levels found in whole foods.
What the Safety Reviews Found
In the 1990s, the FDA commissioned a comprehensive review of MSG safety through the Federation of American Societies for Experimental Biology. The conclusion: MSG is safe. Any ill effects were mild, short-lived, and typically appeared only when people consumed more than 3 grams of MSG on an empty stomach. For context, a typical home-cooked meal uses roughly half a teaspoon of Accent, which is well under a gram.
The European Food Safety Authority set a more specific limit in 2017, establishing an acceptable daily intake of 30 mg per kilogram of body weight. For a 150-pound person, that works out to about 2 grams per day. Most people using Accent at home stay comfortably below this threshold.
The “MSG Sensitivity” Question
A small number of people do report symptoms after eating foods with added MSG. This is sometimes called “Chinese Restaurant Syndrome,” a term rooted more in cultural bias than in science. The actual prevalence of MSG sensitivity is estimated at 1 to 2% of the general population. Symptoms can include headache, skin flushing, sweating, nausea, numbness, and fatigue, and they typically appear within two hours of eating.
Here’s the important detail: these reactions have primarily been documented at doses of 2.5 grams or more, consumed without food. That’s a lot of MSG eaten on its own. In real-world cooking, where Accent is mixed into a dish and eaten alongside other ingredients, reaching that threshold is unlikely. A small subset of people with unstable asthma may be more sensitive, with reactions reported at doses of 1.5 to 2.5 grams without food.
If you suspect you’re sensitive, the simplest test is to notice whether you react consistently. Many people who believe they’re MSG-sensitive don’t react in blinded studies where they can’t tell which food contains MSG and which doesn’t.
Sodium Content Compared to Salt
One of the more practical health considerations with Accent isn’t the glutamate. It’s the sodium. MSG does contain sodium, but significantly less than table salt: about 14% sodium by weight compared to 40% in regular salt. That means gram for gram, Accent delivers roughly one-third the sodium of table salt.
This actually works in your favor if you use it strategically. Research has shown that adding a small amount of MSG to soups allows you to cut overall sodium by about 32.5% without changing how the food tastes. Because MSG enhances savory flavor so effectively, you can use less salt overall while still getting a satisfying result. For people watching their sodium intake, replacing some of their salt with Accent can be a net positive for blood pressure.
Blood Pressure and Long-Term Use
One five-year study of over 1,200 adults in China found that higher MSG intake was associated with increased blood pressure over time, particularly among women and people already taking blood pressure medication. This is worth noting, but it needs context. The study tracked habitual intake in a population where MSG use is far higher than in most Western kitchens. It also couldn’t fully separate MSG’s effects from overall sodium intake and diet quality.
The takeaway isn’t that Accent causes hypertension. It’s that any sodium-containing seasoning, whether salt, soy sauce, or MSG, contributes to your total daily sodium load. If you have high blood pressure or are on medication for it, being mindful of all sodium sources makes sense.
Does MSG Affect Your Brain?
Glutamate is a neurotransmitter, which has fueled concerns that eating MSG might overstimulate nerve cells. Under normal conditions, your blood-brain barrier prevents dietary glutamate from flooding the brain. The glutamate you eat gets metabolized in the gut and liver, and blood levels stay tightly regulated.
There is some evidence that a small proportion of people, particularly those with certain chronic conditions involving cognitive symptoms, may have a blood-brain barrier that lets more dietary glutamate through than usual. For these individuals, removing MSG from the diet has been shown to reduce symptoms in controlled studies. But this appears to be a narrow subset of the population, not a widespread risk.
How Much Is Too Much
If you’re using Accent the way most home cooks do, a pinch here and a half-teaspoon there, you’re well within safe limits. The doses that cause problems in studies start at 2.5 grams consumed without food, and most recipes call for far less than that, mixed into an entire dish. A typical serving of a home-cooked meal seasoned with Accent might contain a few hundred milligrams of MSG, comparable to what you’d get from eating a bowl of tomato soup or a salad topped with Parmesan.
The European guideline of 30 mg per kilogram of body weight gives you a reasonable ceiling to keep in mind. For most adults, that means staying under about 2 grams per day from all sources combined, including processed foods, snacks, and restaurant meals where MSG is often added without you knowing.
Labeling Rules to Know
The FDA requires that any food containing added MSG must list “monosodium glutamate” on the ingredient label. It cannot be hidden under vague terms like “spices” or “flavoring.” Foods that contain ingredients naturally high in glutamate, like tomato paste or yeast extract, are not allowed to claim “No MSG” or “No added MSG” on their packaging. This means if you’re trying to avoid glutamate entirely, you’ll need to look beyond just the Accent shaker and consider naturally glutamate-rich ingredients too.