This is a naturally occurring bioflavonoid that can really help inhibit the release of histamine. As such it can help mitigate some conditions brought on by too much histamine such as hay fever, eczema, asthma.
It is a pigment found in cherries, red onions, garlic, broccoli, but in occurs there in small doses so taking a supplement can boost levels and reduce histamine symptoms like itching and runny nose. It can take a few weeks to kick in so for those who know that hay fever will be a problem every year it is best to pre-empt the symptoms by taking quercetin before symptoms begin.
It is often combined with vitamin c to increase the effectiveness of the quercetin, and sold as an anti allergy complex
You may also need to reduce histamine forming foods such as tomatoes, spinach, avocado, pork, strawberries. There is a long list and some you may tolerate better than others, so if you think histamine is a problem and you would like checked out then make an appointment.
Histamine is a much bigger topic that I will do another time but in the meantime supplementing quercetin can help relieve some of the more uncomfortable symptoms of hayfever at this time of the year.