Walk into any Costco warehouse right now and you'll likely see a massive stack of white and green bags near the vitamins. People are losing their minds over them. Specifically, the Zena Super Greens Costco 45-count stick packs have become a bit of a cult favorite for folks who want to pretend they eat enough kale without actually, you know, eating kale.
It’s a vibe.
Honestly, the "greens powder" market is crowded. You've got AG1 (Athletic Greens) which costs as much as a small car payment, and then you've got the dusty, grass-tasting jars at the grocery store. Zena seems to have found this sweet spot. It’s affordable. It’s convenient. And surprisingly? It doesn’t taste like a lawnmower’s collection bag.
What is Zena Super Greens and Why is it at Costco?
Costco loves a good "on-the-go" health solution. The Zena Wellness version they carry is specifically the USDA Organic Supergreens Fruits & Vegetables powder. Unlike the tubs you find on the Zena website, the Costco version is almost always the 45-count stick pack box.
These are single-serve packets. You tear one open, dump it in water, shake it like you’re at a 2 a.m. rave, and drink.
The ingredient list is absolute madness. We're talking 70+ organic superfoods. It’s got the usual suspects: spirulina, chlorella, spinach, and wheatgrass. But then it goes deeper. They threw in a "Super Mushroom Blend" with Lion's Mane and Reishi, plus a "Hydration Blend" featuring coconut water.
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The Real Cost Breakdown
Let’s talk money. This is why people buy it at Costco.
- Costco Price: Usually around $39.99 for 45 servings.
- Sale Price: It frequently drops to $32.99 during warehouse savings events.
- Per Serving: At the sale price, you’re looking at roughly $0.73 per stick.
Compare that to AG1, which can run you nearly $3.00 a serving. Or even Zena’s own website where a 30-serving tub is $32.99. The Costco bulk deal basically gives you 15 extra servings for the same price. It's a no-brainer if you’re actually going to drink it every day.
The Flavor Factor: Is "Mixed Berry" Actually Good?
Usually, "Mixed Berry" in the supplement world is code for "we tried to hide the taste of pond scum with artificial chemicals."
Zena is different. They use organic stevia and natural berry flavors. It’s sweet. Kinda very sweet, actually. If you hate stevia, you’re going to hate this. But if you’re used to it, the crisp berry notes do a decent job of masking the earthiness of the grasses.
Pro tip: Use ice-cold water. Drinking this at room temperature is a mistake you only make once. Some people even mix it with a splash of apple juice or put it in a smoothie to take the edge off the sweetness.
The texture? It’s okay. It’s a little gritty toward the bottom. That’s just the nature of ground-up plants. If you don't use a shaker bottle with a wire ball, you’ll end up with "green sludge" at the bottom of your glass. Just keep shaking as you drink.
Nutrition and the "Proprietary Blend" Problem
Here is where we need to be real. While Zena Super Greens is USDA Organic and non-GMO, the nutrition label is a bit of a mystery.
It lists "Blends."
- Organic Greens, Fruits, Vegetables and Herbs Blend: 4745 mg
- Organic Fiber, Prebiotic, Probiotic and Digestive Enzyme Blend: 2445 mg
Because it's a proprietary blend, we don't know exactly how much Lion's Mane or how much Spirulina is in there. Is it enough to change your life? Maybe. Is it a clinical dose? Probably not.
However, you do get 5 grams of dietary fiber and 2 grams of plant-based protein per serving. For a drink that’s only 20 calories, that’s a solid win for gut health. Speaking of gut health, it contains seven different probiotic strains, including L. acidophilus and B. longum.
A Quick Warning: The Lead Label
You might notice a Proposition 65 warning on the packaging regarding lead. Don't panic, but do be aware. Many root vegetables and grasses naturally absorb minerals from the soil. Most "greens" products carry this label to comply with California law. It doesn't mean the product is "poisoned," but it's something to note if you are particularly sensitive to heavy metal concerns in supplements.
Does it Actually Do Anything?
If you expect to drink one glass and suddenly have the energy of a toddler on an espresso bender, you’ll be disappointed.
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Most users report that the benefits are subtle and cumulative.
- Digestion: The fiber and digestive enzymes (Amylase, Protease, Cellulase) seem to help with bloating.
- Hydration: The coconut water powder makes it feel more "refreshing" than just plain water.
- Convenience: The biggest benefit is just the "insurance policy" of getting some micronutrients on days when your diet consists mostly of coffee and stress.
Comparing Zena to the Competition
| Feature | Zena (Costco) | AG1 | Bloom |
|---|---|---|---|
| Price per Serving | ~$0.73 - $0.88 | ~$3.30 | ~$1.33 |
| Organic? | Yes (USDA) | No | No |
| Sugar | 0g (Stevia) | 0g (Stevia) | 0g (Stevia) |
| Serving Style | Stick Packs | Powder/Pouch | Tub |
Zena wins on price and organic certification. AG1 wins on "completeness" (it’s basically a multivitamin too). Bloom is the TikTok darling, but Zena's ingredient list is arguably more robust for the price.
Buying Advice: How to Get the Best Deal
If you see the Zena Super Greens Costco packs on sale, buy two. They have a shelf life of about two years, and they often disappear from the floor for months at a time. Costco is famous for the "here today, gone tomorrow" inventory style.
Also, check the Costco Business Center if you have one nearby. They often carry the stick packs even when the regular warehouse is sold out.
Actionable Next Steps
If you’re ready to try it, start slow. Don't jump into two a day.
- Week 1: Drink half a packet in 12 oz of water once a day. Let your stomach adjust to the 5g of fiber.
- The Mix: Use a shaker bottle with ice. It changes the experience entirely.
- The Timing: Drink it in the morning on an empty stomach or as a mid-afternoon "pick-me-up" instead of a second coffee.
Check your local Costco’s "End Caps" (the displays at the end of the aisles). That’s usually where the Zena sale items hide. If you're a member, keep an eye on the monthly coupon book for that $7 off deal—that’s when the value is unbeatable.