Nausea and vomiting several times after eating food bars

Did you email into us ( I’d like to investigate this further.

Done Conor, thanks.

Please forgive the delay, I am still on vacation

I’ve had a vaguely similar experience. While I never vomited after having a Food Bar for breakfast (along with a small cup of coffee or hot cup or tea) I did feel noticeably nauseous a few hours later.

The worst was on a work-related trip recently. We ate at various places throughout the day (no one else became ill or reported feeling ill) and I had a Food Bar in the hotel room and in the middle of the night I woke up feeling as though I would vomit. Luckily I didn’t but I associated it with the Food Bar based on previously feeling ill after having nothing but a Food Bar and coffee or tea then feeling ill, then it fading and having “traditional” food later on.

I actually have about half of my first box of Food Bars left because I’m not sure if they’re the culprit or something else. The only common factor is each day I felt ill was a day I had a Food Bar.

I do recall a residue inside the wrapper but it’s not a clear memory and I remember thinking that this may be normal because it was the first one I’ve ever opened. I remember one Food Bar was a bit inflated/puffy with air but still sealed while the others were not. If I think about it I’ll open another bar or two on Monday and look for residue.

I can say that the very first Food Bar I had seemed okay and my GF had about half with me and I don’t recall any illness associated with that first one.

If I had to describe the illness it would be something I’ve felt after having too much sugar or cake frosting or something like that.

Hello Conor. I emailed info about 10 days ago, and haven’t heard back yet. Any idea when I can expect a response?

Pm me with the email you used to contact us. I’ll flag the ticket.

Hello Raylingh. I ate newly shipped bar on 9/1. An hour in I was puking & having diarrhea, lasted 12-hours. Thinking I’d experienced stomach flu I ate another the next week with more intense symptoms & profuse sweating. Like you, absolutely no problem with the first shipment. Was shipment #2 this lot? 08:42 B.B. 14JUL17 F3 1966

Per Soylent, there investigation has revealed nothing, and say I must have an allergy or sensitivity to the bar … which is essentially the same as the drink that I have no issue with.

Have you made any concrete discoveries for your reaction?

Thank you very much for sharing your experience. I debated posting this publicly or not and ultimately decided to in hopes of getting other user accounts to aid in troubleshooting.

The only batch numbers I have are the ones posted above. These are the numbers of two bars that we’re known to cause me trouble:

  • “03:55 B. B. 14JUL17 F3 1966”
  • “04:04 B. B. 14JUL17 F3 1966”

The second bar I only ate a small piece of several days after the previous reaction, to ensure it was the bar (I had nothing else to eat that day). Sure enough, a few hours later it was forcefully regurgitated (I say forcefully because I can usually stave off vomiting when I have car nausea or sea sickness).

I find it extremely odd that I reacted fine to earlier bars in the same shipment. I have no known allergies or food sensitivities.

By chance, were you traveling when you had the issues? Were your bars subjected to heat before you ate them, when you reacted?

I’ve PMed my details to Conor, so hopefully I’ll have more details from the Soylent team soon.


I’ve done it many times. It’s not a big deal. If you have a good spam filter (e.g., use a good major email provider), you’ll be OK. If not, you’ll get tons of spam whether you post your email address here or not.

Yeah, not like it’s not out there anyway.

The curious thing for me (and I felt very nauseated from bars as best I can tell) is these symptoms mirror my reaction to Soylent v1.1 which had “enzymes” to try and reduce gas. I would get REALLY warm feeling and then about 3-4 hours (if I recall correctly) after drinking 500ml I would vomit my guts out.

The symptoms I felt after eating Food Bar were similar minus the vomiting. If I did vomit I’d say the symptoms were similar although the nausea and feeling warm were less intense with Food Bar.


I did, Conor. Jean felt there is something in the bar I am allergic to or sensitive to. But the first shipment wasn’t a problem for me. The drink continues to be enjoyable.

Hi Raylingh. To answer your travel questions, none. I ate upon receipt of package, and then again the following week, having given credit of the first reaction to a virus.

I had the exact same experience. Drink 2.0 and love it. Ate a couple of the bar from my box and was fine. Last Friday, I ate one for breakfast and about an hour later began to feel nauseous. I had to run to the bathroom to vomit and then vomited once more and had awful diarrhea. I also assumed that it was a virus. This morning, I had about 1/3 of a bar and had an even more violent reaction. I vomited a total of seven times and had several runs of the runs. This was all the more “AWESOME” because I am a teacher and this happened at school. I have had to leave work sick for the past 2 Fridays, My batch number was BI-OOCAR. I also noticed that one of my bars was sticky. I didn’t eat that one yet – but had it in my lunch bag and then just thought it was sticky because something else spilled on it. But might be a case similar to yours. My body could not get it out fast enough. Soylent needs to figure this out – I can’t believe it was just a “reaction”. I even cancelled by 2.0 subscription because I just can’t trust the product anymore.


meaning Raylingh I had batch 16:02 BB 14JUL17 F# 1966

I haven’t gotten sick from any bars, but I never recorded what the old ones I had were stamped (since I had no reason to). The current one I’m eating says: 11:16 B.B. 14JUL17 F3 1976.

16:02 B.B. 14JUL17 F3 1966 - hmm slight difference from my batch which was 1966

@jteach, thanks for sharing your experience. As @Conor has suggested, could you please email a description of your issue to That way all of our experiences will be documented in a location where the Soylent customer service team can respond.

Also, you may want to ask for a refund (if you have not already).