
Hi everyone,
Quick Answer: AG1 is a greens powder with 75+ ingredients. Most healthy adults tolerate it, but independent evidence is limited that it improves health beyond filling nutrient gaps. In its favor, it’s NSF Certified for Sport. My concerns are the proprietary blends, soy lecithin, inulin (a common cause of bloating), herbal ingredients that may interact with medication, and its premium price. It isn’t for under-18s or anyone pregnant or breastfeeding, so check with your doctor first if you take medication or have a thyroid or liver condition.
I’m asked constantly, “Is AG1 good for you?” and my honest answer is that I don’t think it’s the health investment it’s marketed as. At Eat Burn Sleep, we look at every supplement through a food-first, anti-inflammatory lens, so that’s the lens I used when I read AG1’s label. When it first came on the market, I ordered a packet to look at it properly. Once I read the ingredient list, I had enough concerns that I sent it back. In this post, I’ll walk you through the ingredients that stood out to me (soy lecithin and inulin), what we do and don’t know about AG1 and your liver, thyroid, and digestion, who should avoid it, and what it costs, so you can learn to read a supplement label for yourself.
What Is AG1?
AG1 (formerly Athletic Greens) is a greens powder supplement that combines vitamins, minerals, probiotics, prebiotics, adaptogens, and plant-based ingredients, which you mix with water. The brand says it contains 75+ ingredients and markets it as supporting gut health, immunity, energy, and recovery. It’s widely promoted by health influencers, athletes, and some healthcare professionals. AG1 is also NSF Certified for Sport, which means it’s independently tested for banned substances and that the label matches what’s in the tub. That’s a real point in its favor, though the certification doesn’t show that the ingredients work.
However, while AG1 contains an extensive blend of ingredients, the formula may not provide the same benefits for everyone. The effectiveness of many ingredients depends on their dosage and your individual nutritional needs, so it’s important to look beyond the marketing claims before deciding whether it’s the right choice for you. Most ingredients sit inside proprietary blends, so the exact amount of many of them isn’t disclosed.
Are Supplements Safe?
Here’s something most people don’t realize: supplements aren’t approved by the FDA before they go on sale. The manufacturer is responsible for the safety of its own product, and companies don’t have to prove effectiveness before selling it either. The FDA can act if a product is found to be unsafe or mislabeled, but that happens after it’s on the shelf. It’s a similar picture in the UK, where supplements are regulated as food rather than as medicines.
Supplement companies often rely on ingredient suppliers and contract manufacturers for safety data, and quality varies a lot between brands. The FDA doesn’t certify supplement formulas or their ingredients. That’s why independent testing, such as NSF certification, is worth looking for, and why I’d always read the label rather than trust the marketing.
My honest advice: choose brands that research their ingredients and publish their testing, like Minami or Biocare. You can see more of what I personally use and trust on my Yalda Loves page. But even the best supplement can’t replace a healthy diet and lifestyle. Before reaching for any supplement, ask yourself what you actually want it to do, because many of those goals (weight loss, easing pain, better energy, clearer skin, supporting mood) are supported by an anti-inflammatory lifestyle, without the guesswork. That’s why we start with food and lifestyle first at Eat Burn Sleep.
What Do Supplements Contain?
Many supplements contain excipients, fillers, stabilizers, bulking agents, and preservatives. Some have a purpose, such as helping a powder mix or stay stable, while others are there mainly to keep costs down. Supplements are regulated differently from medicines, so it’s up to you to read the label.
Knowing what to look for in a genuinely good supplement, and what to flag as a cheap filler, matters. I’d urge you not to be swayed by a doctor’s or celebrity’s endorsement, or to buy something online without actually reading and understanding what’s in it.
Is AG1 Good for you?

AG1 has been around for a while, has been promoted by well-known health figures and podcasters, and has well-known investors, so there’s a lot built into the brand that makes people trust it instinctively. It was reported to have made around $600 million in revenue in 2024 (Forbes). When a trusted voice tells you something is good for you, most people stop asking further questions. I don’t think you should.
AG1 was founded in 2010 under the name Athletic Greens. It’s a blend of 75+ vitamins, minerals, superfoods, probiotics, and adaptogens, and the brand states there are no GMOs, herbicides, pesticides, artificial colors, flavors, or preservatives. According to its own website, it’s made from high-quality ingredients to strict standards. The NSF Certified for Sport certification backs up the testing side, but claims about ingredient quality and benefits are still the brand’s own.
What AG1 does well:
- NSF Certified for Sport, so it’s independently tested for banned substances and label accuracy.
- A convenient way to add a broad range of vitamins, minerals, and probiotics, which may help fill gaps if your diet is limited.
Where I have concerns:
- Most ingredients sit in proprietary blends, so individual doses aren’t disclosed.
- It contains soy lecithin and inulin, which don’t suit everyone.
- It can cause bloating in sensitive guts.
- It’s expensive, and there’s limited independent evidence that it improves health beyond a balanced diet.
The Real Risks of Taking AG1
Supplements are genuinely big business, and manufacturers still don’t have to prove their safety. Even with a “reputable” brand, I’d always recommend running the ingredient list past your nutritionist or healthcare provider first. That one step minimizes your risk of:
- Contraindications with medications or other supplements you’re already taking.
- Accidentally taking too much of a given vitamin or mineral.
- Sensitivities to ingredients that aren’t officially classed as dangerous, but still don’t agree with you.
AG1 does contain beneficial active ingredients, including B vitamins, zinc, and vitamin C. But a concentrated blend of this many active ingredients can be hard for some people to digest, and some herbal ingredients can interact with medication or cause problems in large amounts. Licorice, for example, can lead to low potassium and high blood pressure when taken in excess, and some people are far more sensitive to it than others (Kwon et al., 2020). Check the current label for which herbal ingredients are included and in what amounts, and ask your doctor or pharmacist if you take any medication. AG1 states it’s for adults 18+ who aren’t pregnant or breastfeeding.
The ingredient that concerned me most when I read the label was soy lecithin.
Why the AG1 Ingredient Soy Lecithin Has Health Risks
Soy lecithin is a common emulsifier, and in a lab (in vitro) study, emulsifiers including soy lecithin altered the makeup of gut bacteria (Miclotte et al., 2020). That doesn’t prove it harms people who take it, but it’s not what I’d choose in something marketed for gut health, immunity, and recovery.
Soy lecithin is added mainly as an emulsifier rather than for a health benefit, though it also supplies phosphatidylcholine, which AG1’s label mentions. You could argue that the good ingredients in AG1 outweigh it. It’s listed as the second ingredient in AG1’s superfood complex, although the exact amount isn’t disclosed. Research into emulsifiers is still developing, but so far we know:
- Lab studies suggest emulsifiers, including soy lecithin, can change which bacteria grow in a model of the gut (Miclotte et al., 2020).
- Some of these changes involved bacteria such as Enterococcus and Clostridium, which include both harmless and harmful species, so what this means for people isn’t clear.
- Animal research on other emulsifiers (such as polysorbate 80 and carboxymethylcellulose) links them to gut inflammation and metabolic changes, but this hasn’t been shown for soy lecithin at the amounts found in a supplement.
A disrupted gut microbiome has been linked to immune dysregulation and chronic inflammation, which can look different in every person. If you’re managing an inflammatory or digestive condition, it’s worth asking your practitioner whether an emulsifier like soy lecithin makes sense for you. If you have a soy allergy, note that AG1’s label states it contains soy.
The current label notes that it contains a premium lecithin, derived from soy, for its phosphatidylcholine content. Worth knowing: gut bacteria can convert dietary phosphatidylcholine into TMAO, a compound associated with cardiovascular risk in observational research (Wang et al., 2011; Tang & Hazen, 2014). Whether the small amount in a supplement matters hasn’t been established.
How Is Soy Lecithin Actually Made?
To produce soy lecithin, soybean oil is first extracted from raw soybeans using an industrial solvent. The oil then goes through “degumming,” mixing it with water until the lecithin separates out. From there, it’s dried and often bleached. That processing degrades the DNA in the soy lecithin, so it becomes genuinely impossible to tell whether the source was GMO or not. I’ll be honest, I’m still not entirely sure what AG1 means by “premium” soy lecithin either.
Is the Inulin in AG1 Safe for Digestion?
The other AG1 ingredient I’d flag is inulin, a prebiotic fiber listed in AG1’s superfood complex.
Inulin can shift your gut microbiota. For many people, that’s helpful, but if your microbiome is already out of balance or your gut is sensitive, it can cause problems.
Inulin is a well-known trigger for bloating, gas, cramps, and diarrhea, particularly in people with IBS or other digestive issues. Some animal studies also suggest high doses may affect cholesterol and bile acid metabolism and liver function (Pauly et al., 2020), though it’s unclear whether this applies to people at the amounts in AG1.
This is why so many people ask me whether AG1 causes bloating, gas, stomach issues, or even symptoms that feel IBS-like in my experience. Inulin is a common reason, especially for anyone whose gut is already sensitive.
There’s plenty written online about inulin’s health properties, and much of it is genuinely true. But it’s important to run any new supplement past your nutritionist (or reach out to us directly if you’re an EBS member) to make sure it’s actually right for your specific gut and health needs.
G1’s own marketing states, “AG1 empowers the gut for whole body health.” I’m not convinced. With soy lecithin and inulin in the mix, I’d be cautious, especially if your gut is sensitive. Where I do agree with them is this: you can’t achieve a healthier everything else without a healthy gut first.
Does AG1 Affect Your Liver?
Is AG1 bad for your liver? There’s no credible independent evidence that AG1 damages the liver in healthy people, and I want to answer this honestly rather than alarmingly. The brand doesn’t publish liver-specific safety data of its own, which, going back to my earlier point, is part of the problem with how supplements are regulated.
That said, your liver is the organ responsible for processing everything you take, including all 75 ingredients in a formula like this at once. Some animal studies suggest inulin may affect liver function (Pauly et al., 2020), though this hasn’t been shown in people at these amounts. If you’re also taking other supplements or medications your liver is already processing, that concentrated load can add up.
If you have an existing liver condition or you’re taking medication that’s metabolized by the liver, it’s genuinely worth reviewing AG1’s full ingredient list with your doctor before starting it.
Does AG1 Affect Thyroid Health?
I understand why this question comes up so often, especially among people already managing a thyroid condition. AG1 doesn’t publish thyroid-specific research, and I haven’t seen credible independent studies linking it directly to thyroid dysfunction.
What I would say is this: any formula combining dozens of vitamins, minerals, and herbal adaptogens has the potential to interact with thyroid medication or existing thyroid sensitivities, simply because of the number of active ingredients involved. One to know about is ashwagandha, which AG1 includes. It has been reported to raise thyroid hormone levels in some people, which can matter if you have a thyroid condition or take thyroid medication. It’s also worth checking the label for iodine-rich ingredients.
If you’re on thyroid medication or managing a thyroid condition, it’s worth going through AG1’s ingredient list with your doctor or nutritionist before adding it in, rather than assuming a “wellness” label means it’s automatically safe for your specific situation.
Can AG1 Cause Headaches?
Some people report headaches when they first start AG1. There’s no AG1-specific research on this, but there are a few plausible explanations. Introducing a concentrated blend of vitamins, minerals, and adaptogens all at once can cause a short-term adjustment reaction in sensitive people. Dehydration, a shift in blood sugar, or sensitivity to one of the herbal ingredients could also play a part. If headaches persist beyond the first week or two, stop taking it and speak to your healthcare provider rather than pushing through.
Beware of Marketing Words!
They can be misleading, so read past them. Here’s what I want you to take away from all of this:
- Supplements aren’t approved by the FDA before they’re sold, so safety and effectiveness claims are largely down to the manufacturer.
- Marketing slogans are written to sell a product, so look at the ingredient list and the evidence behind it.
- Always read the full ingredients list on any supplement, and talk to your healthcare practitioner (or us, if you’re an EBS member) before starting one.
- Even supplements endorsed by doctors and celebrities may not suit you, depending on your health, medication, and gut.
- Learning to read labels and question the marketing is something we teach at Eat Burn Sleep.
If you haven’t listened to my podcasts or caught the recent Instagram Live with Dr. Dawn Sherling about the dangers of food additives, I’d genuinely recommend both.
AG1 or Eat Burn Sleep: Which Is the Better Investment for Your Health?
It’s worth thinking about what it might cost you, long-term, to make yourself less healthy rather than more. For reference:
- At the time of writing, AG1’s single subscription is listed at around $79 a month in the US, which comes to roughly $948 a year for one supplement. UK pricing differs, so check AG1’s current price before you decide.
- Our Premium Eat Burn Sleep Membership is £270 a year. It’s a different kind of investment: rather than a supplement, it gives you the food, movement, and stress tools to support your health long term.
Understanding what’s genuinely good for you, and how your own body works, is the best form of self-care there is, and that’s exactly what the EBS platform is built to give you.
A year’s EBS membership gives you the knowledge and tools you’d otherwise need a nutritionist to piece together, plus movement videos designed to calm inflammation. You get access to movement videos, guided meditations, meal plans, food lists, and an ever-expanding anti-inflammatory cookbook with recipes from around the world, such as Catalan roasted vegetables, Chicken Marbella, Moroccan Burgers, and plenty more.
EBS is built to work for families and for people anywhere in the world. Many of our members tell us they feel healthier over time, retrain their taste buds, and build habits that support their gut health. Individual results vary.
Here’s what Dr. Sara Fernandez, MD, had to say:
“I am really impressed with the quality of your work and couldn’t agree more with your principles. Your ability to formulate a lifestyle strategy around improving health is outstanding. EBS is an excellent professional platform sustained with thorough research and scientific information. You not only cover research on anti-inflammatory nutrition but also on all medical conditions. This demonstrates how what we eat contributes to the regression or progression of chronic illness.
So, is AG1 good for you? In my honest opinion, once you look past the marketing and into the ingredient list, I don’t think it’s the health investment it’s positioned to be. It may help fill gaps for some people, but a balanced anti-inflammatory diet will take you further, which is exactly what we help our members build at Eat Burn Sleep. If you do take it, talk to your doctor first. Do take care of your health; it’s really precious. Have a great day!
AG1 FAQs
Q. Is AG1 bad for your liver?
There’s no credible independent evidence that AG1 damages the liver in healthy people, and the brand doesn’t publish liver-specific safety data. If you have a liver condition or take medication processed by the liver, review the ingredient list with your doctor before starting it.
Q. Does AG1 affect your thyroid?
AG1 doesn’t publish thyroid-specific research, and I haven’t seen credible studies linking it to thyroid problems. However, it contains many active ingredients, including ashwagandha, which has been reported to affect thyroid hormone levels in some people. If you take thyroid medication or have a thyroid condition, check the ingredient list with your doctor first.
Q. Does AG1 cause bloating or gas?
It can in some people. AG1 contains inulin, a prebiotic fiber that’s a common trigger for bloating, gas, and cramps, especially in people with IBS or a sensitive gut. If you notice symptoms, stop taking it and speak to your healthcare provider.
Q. Is AG1 worth the money?
It depends on your diet and budget. If you already eat plenty of vegetables, fruit, fiber, and protein, a greens powder is unlikely to add much. It may help fill gaps if your diet is limited, but given its premium price, a blood test and a targeted supplement may be a cheaper route.
Q. Who should avoid AG1?
AG1 states it’s for adults 18 and over who aren’t pregnant or breastfeeding. Check with your doctor or pharmacist first if you take prescription medication (especially thyroid medication), have a thyroid, liver, or kidney condition, have a soy allergy, or have IBS or a sensitive gut.
Q. Is AG1 FDA approved?
No. Dietary supplements aren’t FDA-approved before they’re sold, and the FDA doesn’t certify AG1 or its ingredients. AG1 is NSF Certified for Sport, an independent certification that checks for banned substances and that the label matches the contents.
Reboot and Revive

























