This blog post discusses the pine mouth syndrome, provides remedy suggestions and supplies information about the FDA’s take on the issue and the related FDA website to call for reporting.
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Pine nuts are, well, nuts from the pine cones. They are a great source of protein and dietary fiber. As such, they are mixed with fish, meat, bread, pasta and several desserts in many different cuisines all over the world.
My son and I spent the early years of our lives in the Aegean region where pine nuts are simply a part of the local cuisine. As such, we eat a lot of pine nuts. Recently, we had a very weird experience with them.
When I was making a hot dessert, I had some leftover pine nuts sitting on the kitchen counter. It did not take my son too long to discover that they were leftovers. He consumed probably two handful of pine nuts as I was cooking.
The next day, he started complaining about this horrible taste in his mouth. According to him, the taste would come when he tried to eat or drink something. When he would not eat his favorite dish that day because eating it made his mouth taste bad, I started to worry. He immediately called his uncle, who is a medical doctor, to ask what the potential reasons could be. He was asked several questions and told not to worry about it but to make sure to watch it. When the taste got worse, I did a little research online entering the following: “bad taste in mouth when eating.” The results were interesting. Many people had the same problem if they had eaten pine nuts the day before. Not having made the connection earlier, we both looked at each other in disbelief and continued our search for some remedy.
Apparently, this is a very current phenomena that has not been studied in detail by the medical authorities. According to the records, the problem was first reported by a Belgian doctor in 2001 and several reports were published in the Medical Journal of Toxicology. Additionally, the Food and Drug Administration (“FDA”) received more than 50 complaints and took an active role in asking anyone with similar symptoms to report it to the FDA. Below is a photo of the pine nut packages at Kroger that caused our specific problems.
So far, the reports and discussions have some aspects in common: smaller pine nuts grown or processed in China seem to cause the symptoms of bad taste in one’s mouth while eating or drinking. There does not seem to be an effective remedy to the problem and the common term of the discomfort seems to be one to four weeks. Even though some websites suggest using aloe vera juice or active charcoal tablets, these can cause further problems if taken without consulting a doctor. Another suggested remedy is to gargle with salt-water solution, which is fairly harmless and perhaps effective to some extent. As the pine mouth problem is fairly new, remedies will probably be found through trial-and-error and medical studies of the issue will increase.
Meanwhile, as responsible individuals, we must take certain actions to encourage further study of the problem and to inform those who are in the position to do something. For example, when you find yourself suffering from pine mouth:
- Make sure to check the label of the pine nuts and see where the product was processed. European, American and Asian pine nuts are distinct in their size, looks, taste and nutrition. If the pine nuts you purchase are small, lack pine smell and strong taste, they are likely to be Asian pine nuts and more likely to have been processed in China.
- Call the store that sells the product and explain to them that this is a new phenomena that can cause a lot of problems to the consumers.
- Report the case to the FDA using their website and the information provided there. For Kentucky, the toll free number for the FDA’s Consumer Complaint Coordinator is 800-437-2382. For all other states, you can find the information here.
- Make sure to try safe but potentially effective remedies, such as salt-water solution, garlic, etc. If any of these prove to be effective remedies, share your thoughts and experience on the forums where pine mouth syndrome is discussed.
- As this problem can cause the patient to be hesitant about eating or drinking anything, it can further result in weakness of the body. Make sure to encourage some type of food intake even if it tastes bad. The last thing you want is to create a weakened immune system which will be vulnerable to bacteria and viruses.
- Reportedly, sweet and hot foods and drinks seem to be more tolerable to consume when one is suffering from pine mouth. These may be the appropriate food to eat during this time.
After our experience, I called our local Kroger store and spoke with the manager. He was able to confirm that the pine nuts I purchased there were in fact processed in China. After my complaint, he told me that he was going to pull them off the racks until further research looking into the problem.
I also called the Kentucky Consumer Complaint Coordinator and reported the problem.
The problem for my son has not subsided. As we try different remedies, I will make sure to report if we find anything to be effective. I would appreciate any comments if you had the same problem or found an effective solution.
Here is a link to an NPR story on the subject:


Donielle
This happened to me! I bought mine in Georgetown, should I contact them?
Helen
I definitely would, Donielle. Just call the Toll Free FDA number for Kentucky and talk to them about what happened. You may also want to call the store and let them know.
Amy
I just got this last week after having pesto with extra pine nuts at a restaurant. I’m glad for the link to report to the FDA, but I’m not sure what to do about the restaurant – I had a 3-day onset, hard to make a case to link, but you can be sure I’m not gonna eat my leftovers now!
Justin
I just bought pine nuts from Stater Bros in Riverside, CA. I had a few raw and also put them in pesto.
Thanks for writing this blog! I thought I had some weird gum disease when everything started tasting bitter!
I checked the pine nuts, and they were indeed processed in China.
Martha
I had the same pine nuts as Justin (above) and I did not get pine mouth. I roasted mine though, didn’t eat them raw.
Helen
Thank you for your comments. It appears that when roasted, the pine nuts are less likely to cause the syndrome. When they do, however, it is crucial to notify the FDA since this is a new phenomenon and needs much research before the pine nuts can be properly regulated and an effective remedy can be found.
Marianne
I have “Pine Mouth”
Last week I made a dish with pine nuts from Stater Bros. almost two days later I started getting the most bitter, metallic taste that would just not go away. It never even occurred to me that it was related to the nuts because I used to eat them often, although it has been about a year or so though. I snacked on them throughout makign dinner and, of course, the package sat on the counter and I occasionally snacked on them for the last week. And still this taste remained. NOTHING helped, no amount of sweet, spicy, or any other taste in between could get the taste out of my mouth for more than a second or two. I have been complaining to my boyfriend about it since the onset and he is not experiencing any complaints. He only had the cooked nuts within the Chicken Involtini, I have been eating them raw and I have eaten a lot more than he has. I didn’t Google anything about it until today (because I can simply no longer handle it!) “bitter taste in mouth after eating + symptoms”. Then I found the reports about Pine Mouth and pine nuts from China. I thought when they mentioned Chinese pine nuts that I was exempt because I remembered seeing “Pignolias” (In festive red, white and green no less) on the front. Of course, I mistakenly assumed that they were from Mexico as I often get Mexico-grown dried spices. I mean, how often do we look for the origin in less “important” ingredients. If a recipe calls for Japanese eggplant, of course I would get Japanese eggplant. If the martini called for an English cucumber, no other would do. But now I have to check the origin of a nut to determine its quality and if it is even a foodstuff to begin with? The rumor is that China may be exporting non-edible pine nuts. Well, lo and behold I looked on the package and they are from China, distributed by Stater Bros. I decided to write a blog on it and then I came across your blog and some more news reports. Prior to this I had tried calling Stater Bros but Customer Service is closed on the weekends. What is interesting is the FDA only started getting complaints in 2009 to present. I don’t recall this EVER happening to me until last week. Gourmet cooking is my hobby and now I can’t taste anything at all but metal. I made one my favorite Italian dishes and I was mortified. The reports have said that people have not experienced relief until anywhere from 1 week to 4 weeks after ringestion! I will be complaining to the FDA and calling Stater Bros Distribution first thing Monday morning. I know it isn’t Stater Bros’ fault, but SOMEONE isn’t doing their job somewhere along the line, whether that be in customs or USDA or elsewhere.
Marianne
Wanted to clarify, I meant that the reports have increased dramatically since 2009 I had heard.
Helen
Thank you, Marianne. It certainly seems like the pine mouth syndrome is increasingly appearing in many families. Our hope is that the FDA will start its research into the phenomena. Lets make sure to call the FDA office and report the problem.
glen
i also have this syndrome was getting paranoid thinking my milk was poisened by that japenese nuclear accident thank go for the internet also im in dublin ireland so its world wide must be chemicals in the chinese pine nuts
Rose
HI Helen,
How long did it take your son to recover? I am currently experiencing this (on day 3) and it is absolutely horrible! I have a terrible metallic, poison taste in my mouth at all times but it gets much worse when I eat anything. Other people in my family ate the same nuts and are not having any troubles. I have spoken with several doctors, all of which are baffled. I called to report my problem to the FDA and they politely took my information but offered no reassurance or advice. I am frightened because everything truly tastes like hairspray and I can’t stomach anything…I am currently pregnant and afraid this might somehow affect the baby.
Helen
Hello Rose,
So sorry you are having to go through this during your pregnancy. My son suffered from the pine mouth for about 3 weeks. Then, it went away on its own. He could not eat anything for it would make the taste in his mouth even worse. But, it is really important to eat even if you have to hold your nose and swallow the food as if it is some type of medicine. If you let your immune system down by not eating anything, it may cause even further problems. I would call the FDA again and insist they they do something about it. Otherwise, they are not going to do a thing! Of course, I am not a health professional. But, from our experiences, I know that the pine mouth problem did not cause anything after the symptoms went away. It is such an unfortunate thing that they wont research this further and release some information. Hope you will feel better soon. Just a humble recommendation: there is a really good fruit drink called Blue Machine by NAKED Juice. Try to drink a couple of those even if you have to force yourself. I think it may help.
Denise
I have had this occur from pine nuts from Korea and or Russia. It had never happened before however. Mine were already roasted. Since my experience seems different than others and since this effects some people more than others, I have come to look at differentiating hormone levels as playing a part in whether or not some people get pine mouth at any given point. I only began having a problem since I began the menopause process. My husband has no trouble at all and frequently eats the same ones I was eating. I am a healthcare practitioner and I really think in-depth studies are needed to look the role hormones play in this syndrome i.e. pregnancy, adolescent phase, male and female menopause, week of women’s cycle etc…. (As well as FDA controls on Imported pine nuts).
Phyllis
I am so glad I found this! I have been having the metallic bitter taste for about 4 days now – diarrhea started yesterday. I had eaten some pine nuts from Kroger. Now I know what the problem is! Thank you! I do hope this goes away soon. My husband is on his way now to get some acidolphilus capsules. I am hoping that will help.
Candy Grammel
I purchased my pine nuts from Kroger. Sure enough, imported from China. I think the price is lower from China and that may be why you see more cases of it now. I have had them from Kroger before and not had a problem but its been a couple years. I heard to try some zinc lozenges like for cold treatment. I have had two so far but haven’t noticed a big change. I also heard from a website that some people get some relief from Pepto. I can’t stomach that stuff. I will be calling the FDA and Kroger to complain. This stuff needs to be removed from the shelves. Its Russian roulette to know if you have company if anyone will have a problem.
Dave
I had this same problem but it ended up being from canned air dusters that you use on computers instead of pine nuts. Check out the site here Bitter Taste In Mouth . But the next time I ate pine nuts I noticed that they also cause it a little.
Mary Palmer
I seem to have it now also. Saturday night at a party I had pine nuts–in a salad I made and in a pesto a friend made, so I don’t even know which source did it. Everyone else at the party is fine. It’s horrible, but at least now I know it’s not something fatal. BTW, with me hot or sweet foods are actually WORSE. My husband and I planned to go out to a nice restaurant this Friday to celebrate our 44th wedding anniversary. Needless to say, we are not going after all!
Helen
Hi Mary. Thank you for sharing your story. It seems like you have what it takes after your 44th wedding anniversary to have fun and enjoy your wonderful companionship. Happy Anniversary! Hope it goes away quickly in time for you to celebrate it!