I Tried AG1’s Greens Powder To See if It’s Worth the Hype—Here’s My Honest Review

I'll admit I've been curious about AG1 (formerly Athletic Greens) for a while. Friends sing its praises, and you don't have to look hard to find positive AG1 reviews across the internet. So I gave it a go. Here's my experience taking AG1 for a few weeks, plus insight from two registered dietitians on the pros and cons of the greens powder, who might benefit from it, and who should steer clear.

AG1 — $79 and up

Sponsored by AG1

Pros:

• Comprehensive variety of nutrients
• NSF Certified for Sport
• Good Manufacturing Practices (GMP) certified facility
• Pleasant taste (no artificial sweeteners)
• Free of many common allergens
• Convenient
• Offers a money-back guarantee

Cons:

• Expensive
• Doesn’t contain vitamin D or iron
• Health claims are somewhat vague

What is AG1?

Backing up for a minute, in case you haven't seen the green drink all over social media like I have, here's the breakdown: AG1 is a powdered nutritional supplement that contains 75 vitamins, minerals, probiotics, and adaptogens. To take it, you mix a scoop of the powder into 8 to 12 ounces of cold water, shake, and ideally drink on an empty stomach (the brand recommends taking it daily, first thing in the morning). 

The powder can also be mixed into other cold beverages, like smoothies or juices, but the brand warns against combining it with hot drinks because it might make the ingredients less effective.

If you've ever taken a multivitamin, you're probably thinking 75 ingredients is a lot. And you're right. So let's take a closer look.

Ingredients

One scoop of AG1 (that's 12 grams) has 50 calories, 6 g of carbs, 2 g each of fiber and protein, and less than a gram of sugar. 

Here are the nutrients you get per serving:

• Vitamin A: 555 mcg RAE (62% DV)
• Vitamin C: 420 mg (467% DV)
• Vitamin E: 83 mg (553% DV)
• Thiamin (vitamin B1): 3 mg (250% DV)
• Riboflavin (vitamin B2): 2 mg (154% DV)
• Niacin (vitamin B3): 20 mg NE (125% DV)
• Vitamin B6: 3 mg (176% DV)
• Folate: 680 mcg DFE (170% DV)
• Vitamin B12: 22 mcg (917% DV)
• Biotin (vitamin B7): 330 mcg (1100% DV)
• Pantothenic acid (vitamin B5): 4 mg (80% DV)
• Calcium: 118 mg (9% DV)
• Phosphorous: 130 mg (10% DV)
• Magnesium: 26 mg (6% DV)
• Zinc: 15 mg (136% DV)
• Selenium: 20 mcg (36% DV)
• Copper: 195 mcg (22% DV)
• Manganese: 400 mc (17% DV)
• Chromium: 25 mcg (71% DV)
• Sodium: 45 mg (2% DV)
• Potassium: 300 mg (6% DV)

What's all that mean?

Keep in mind: DV means the percent daily value, which reflects the recommended amount of a nutrient to consume each day, and it's based on a 2,000-calorie diet for healthy adults. You'll notice a pretty wide range of percentages on the above list. For example, the recommended amount of daily vitamin E is 15 mg¹. AG1 has 83 mg, which is more than five times the recommended amount. It's much lower than the vitamin's tolerable upper limit of 1,000 mg per day, but it's good to take stock of what those percentages mean for you in relation to your existing diet.

Once we're past the vitamins and minerals, things get a little less clear. That's because AG1 contains four proprietary blends: a "superfood" complex, an herb and antioxidant blend, digestive enzymes, and probiotics. While the label shows the total grams per serving of each blend, it doesn't break it down further. So, for example, we don't know for sure how much spirulina or green tea extract is in there. 

"You don't know how much of [those ingredients] are actually in the product," says Leah Murnane, RD, CSSD, LDN, board-certified sports dietitian and founder of Lettuce Eat Dessert. "And for the size of the scoop, it's hard to think that there would be enough of those items in there to actually offer a benefit," 

Health claims

The main claim AG1 makes is that "one scoop supports whole body health." The label also lists a slew of general health benefits, like "energy and focus," "stress and mood balance," "brain and nerve function," and "healthy aging."

If you read the label closely, you'll notice each of these claims appears with an asterisk. The caveat is that the FDA hasn't reviewed or approved any of these statements. As with other supplements, we're kind of just taking the brand's word that these are all true. 

The research

There is some research to back up AG1's health claims, though. Over the past 15 years or so, the brand has commissioned a few scientific studies, including an observational study and a clinical trial. This is definitely admirable, considering many other supplements that say they're backed by research rely on low-quality animal or in vitro studies, or research done on individual ingredients. 

AG1's studies, on the other hand, looked at people using the actual product and found that those who took the supplement more than doubled their levels of healthy gut bacteria. What's more, folks who regularly took AG1 for three months reported positive effects on their energy levels, digestion, and overall sense of calm.

Still, these studies were ordered by the brand, so it's wise to take them with a grain of salt, Murnane says. Beyond that, she adds: "There's also not a ton of [knowledge about] how it's going to affect you long-term, just because it is such a relatively new thing within the last 10 to 15 years."

My experience taking AG1

After taking the supplement for a few weeks, here are the pros and cons of AG1 as I see them.

What I like about AG1

• Third-party certified: First and foremost, I appreciate that AG1 is NSF Certified for Sport, which means the product has been independently tested by NSF (a well-respected name in the supplement-testing business) to ensure it actually contains the ingredients it claims on the label, in the amounts claimed, and that it doesn't have any extras not listed (like heavy metals or other contaminants). This kind of testing is voluntary, so the seal carries a lot of weight. AG1 is also manufactured in a facility that is Good Manufacturing Practices (GMP) certified, which adds another level of quality assurance.
• Tasty: I was pleasantly surprised by the taste. As a greens powder, I assumed it'd be a little bitter, but it's got a pleasant pineapple-forward flavor courtesy of dried fruit powders. It also mixes into water easily, with no clumps, although the texture is a little bit chalky. I also love that there's no added sugar or artificial sweeteners, although it does contain stevia.
• Convenient: This supp packs a hefty nutritional punch into one once-a-day product that's easy to take (aka, no pills to swallow). You do have to refrigerate the pouch after opening, but I like that there's a travel pack option—these single-serving packs are easy to throw in a gym or overnight bag, no fridge required.
• Self-care boost: I was surprised how a three-minute morning ritual could feel like a self-care practice. Taking a beat out of my busy mornings (that mainly include making breakfast and packing lunches for other people) to drink AG1 gave me the sense that I was doing something good for me, which gave me a small sense of accomplishment that was a nice way to start the day.
• Pick-me-up: Whether because of the natural sugars, B vitamins, or green tea extract (or maybe a combo of all three), I did feel a little burst of energy after finishing the drink — enough to delay my morning coffee, which I usually reach for ASAP. Still, I didn't notice any long-lasting effects on my energy throughout the day. 
• Money-back guarantee: The brand offers a 90-day money-back guarantee, which is just a nice thing to do. I didn't return my AG1, but I appreciate that it's a possibility for anyone who doesn't jibe with the product.

What I don't love so much

• Expensive: AG1 costs more than many other greens powders or multivitamin products. A month's supply (30 servings) starts at $79 for the pouch and $89 for the travel packs. And that's with a subscription. Without one, it's $99 or $109, respectively. Either way, it's a hefty price tag that, for me, is a little hard to justify. 
• Nausea: The supplement is meant to be taken on an empty stomach for best absorption, but I had a hard time, well, stomaching it. I felt nauseated if I didn't eat breakfast within a few minutes of downing the drink. Of course, you don't have to take AG1 on an empty stomach, and Carla Hernandez, RDN, a Los Angeles-based registered dietitian with a focus on gut health, told me there may actually be a benefit to taking the supplement with food (which I started doing instead). "The digestive enzymes can help you digest the food," she notes. "And there are a lot of fat-soluble vitamins in this product, so a lot of those don’t necessarily get absorbed unless you’re taking it with fat." The brand also recommends starting with a half scoop and gradually increasing to a full serving to help combat nausea.
• Doesn't contain vitamin D or iron: These are two nutrients notably missing from AG1, but they're among the nutrients that women like me are most likely to be deficient ² in. Nutrient deficiencies aren't common in the U.S., though, and I've personally never had blood work reveal low levels of either vitamin D or iron. And it's worth noting that AG1 also sells vitamin D3 drops that include vitamin K2 for better absorption, that the brand recommends to take alongside the AG1 powder. AG1 does not include iron as it can interfere with nutrient absorption, and iron requirements vary based on individual factors such as age and diet—the brand recommends discussing with your doctor to supplement if needed.

Tips for taking AG1

Both Murnane and Hernandez say they've tried AG1 and generally think it's a quality supplement, although it's not for everyone. Here are their tips on taking it:

Don't use it to replace a healthy diet

AG1 can be a nice tool to have in your nutritional toolbox but, ultimately, it isn't a replacement for eating a well-balanced diet rich in fruits, vegetables, lean proteins, and whole grains. Rather, Murnane and Hernandez say it can occasionally help fill in the gaps when, say, you're traveling or you know you're going to have a busy day and won't be able to prioritize your nutrition like you normally do. 

Pay attention to your symptoms 

If you decide to take AG1 because you're consistently low on energy or always dealing with GI issues like bloating, take the time to get to the bottom of the issue rather than treating your symptoms with a supplement. You could be dealing with a medical issue that's best treated under a doctor's guidance.

One issue Hernandez notes specifically is SIBO, or small intestinal bacterial overgrowth, where too much bacteria in the gut leads to symptoms like diarrhea, bloating, and abdominal pain. "The prebiotics in this product are great and necessary for a healthy microbiome, but for people with SIBO, it can exacerbate their symptoms."

Talk to your doctor first

Hernandez and Murnane encourage consulting your doctor before taking any new supplement, and especially one with as many ingredients as AG1. This goes double for anyone managing a medical condition or taking medication, or if you're pregnant or breastfeeding.

"Any product that has multiple herbs may potentially have some kind of interaction with medications," Hernandez notes. 

Final thoughts

AG1 is a high-quality supplement with some research to back up its health claims. It's also tasty and a convenient way to fill in any nutritional gaps, especially for people who don't like to swallow pills. Still, it has a high price point and it's not a replacement for eating a well-balanced diet. If you're interested in trying AG1, check with your doctor first to make sure it's safe for you based on your medical history and any current medications you're taking.