Cilantro is considered low histamine and is generally safe for people following a low-histamine diet. The Swiss Interest Group Histamine Intolerance (SIGHI) gives cilantro a compatibility score of 0, its best rating, though it notes that only small amounts are well tolerated. Most histamine-conscious food lists place cilantro in the “safe” category for herbs and spices.
How Cilantro Scores on Histamine Food Lists
The SIGHI food compatibility list is one of the most widely referenced guides for histamine intolerance, and it rates cilantro at 0, meaning it’s considered well tolerated. For context, that scale runs from 0 (well tolerated) to 3 (very poorly tolerated). Cilantro and coriander seeds, which come from the same plant, both receive the same score. The caveat is the note that “only small amounts are well tolerated,” which suggests that large portions could still cause problems for sensitive individuals.
Dr. Kelly McCann’s histamine-conscious food list, used in clinical settings, places cilantro in the “generally safe” column under herbs and spices. This lines up with the broader consensus: cilantro is one of the better-tolerated fresh herbs for people managing histamine intolerance or mast cell activation syndrome.
Cilantro Contains a Natural Antihistamine Compound
Beyond being low in histamine itself, cilantro contains a notable amount of quercetin, a flavonoid that helps stabilize the cells responsible for releasing histamine in your body. According to the USDA’s flavonoid database, raw cilantro leaves contain 52.90 mg of quercetin per 100 grams. That’s a meaningful amount for a garnish herb, though you’d rarely eat 100 grams of cilantro in one sitting. A typical serving of a few tablespoons of chopped cilantro would provide a much smaller dose, but it still contributes to your overall quercetin intake alongside other foods.
Quercetin works by helping prevent mast cells from degranulating, which is the process that floods your tissues with histamine during an immune response. Many people with histamine intolerance take quercetin as a supplement for this reason. Getting some through whole foods like cilantro is a practical bonus, even in small amounts.
Why Some People Still React to Cilantro
If you’ve noticed symptoms after eating cilantro despite its low-histamine status, there are a couple of possible explanations. The first is simply individual tolerance. Histamine intolerance varies widely from person to person, and the SIGHI list’s note about keeping to small amounts reflects this. Your overall histamine “bucket” matters: if you’ve already consumed several moderate-histamine foods in a meal, even a low-histamine herb could tip you over your threshold.
The second possibility is oral allergy syndrome, which is an immune reaction unrelated to histamine content. Cilantro is a known cross-reactive food for people allergic to birch pollen. If you have birch pollen allergy and experience tingling, itching, or mild swelling in your mouth after eating raw cilantro, that’s likely oral allergy syndrome rather than a histamine response. The symptoms can feel similar, which makes it easy to confuse the two. Cooking cilantro typically breaks down the proteins responsible for this cross-reaction, so cooked dishes with coriander may not trigger the same response.
How to Use Cilantro on a Low-Histamine Diet
Fresh cilantro is your best option. Like most herbs, it doesn’t accumulate histamine the way protein-rich foods do, but freshness still matters on a low-histamine diet as a general principle. Use it as you normally would: stirred into rice, scattered over soups, mixed into salsas made with low-histamine ingredients, or blended into dressings.
Start with a small amount if you’re new to tracking your histamine intake or if you’re in an elimination phase. A tablespoon or two of chopped fresh cilantro is a reasonable starting point. If you tolerate that well, you can gradually increase. Ground coriander seed, from the same plant, carries the same SIGHI rating and can be used in cooked dishes where fresh cilantro wouldn’t hold up.
Other fresh herbs that share cilantro’s low-histamine status include basil, parsley, and chives. Keeping a rotation of these on hand gives you flavor variety without adding histamine load to your meals.