Zelenko Labs operates through zstacklife.com, selling health supplement products including Z Stack, Zflu, and Z Night formulated for immune support and wellness. This page aggregates customer ratings and reviews to help shoppers understand real experiences with the brand's products and service.
ZELENKO LABS Reviews
3.4
18 reviews
What Shoppers Say About ZELENKO LABS
Created with AI, based on recent reviews
Shoppers who rate Zelenko Labs highly praise the effectiveness of products like Z Stack and Zflu for immune support and overall wellness, with several customers reporting years of loyal use and satisfaction with customer service. Reviewers appreciate the comprehensive formulations that combine multiple vitamins and minerals in single products, and note that the company responds quickly to issues like damaged shipments. However, a significant portion of reviewers express strong dissatisfaction, with shipping costs emerging as a recurring complaint, some note that postage nearly equals the product price itself, which discourages repeat purchases despite satisfaction with the products.
The stark divide in ratings reflects two distinct customer experiences: devoted, long-term users who view these supplements as essential wellness tools and accept the costs, versus shoppers frustrated by high shipping expenses relative to product value. While product quality and customer service responsiveness receive consistent praise across positive reviews, the logistics and pricing structure appear to be barriers for some potential repeat customers.
Customer Reviews (18)
Sorted by: Most recentSarah W.Apr 3, 2024
Taking 2 capsules of Z-Stack daily through monthly auto-delivery has been amazing for me. After hearing Dr Zelenko speak years ago, I decided to try it. At 75 with advanced COPD and bronchitis, I haven't had a single cold or flare-up since starting. Before this, I'd get severe flare-ups three or four times a year. It's completely changed my life.
Susan V.Feb 13, 2024
The products themselves are good, but dealing with their customer service has been a nightmare. We got kids supplements that didn't match what was advertised or what we've gotten before. When I asked for replacements, they told me to pack up what I received, ship it back, and foot the bill for return shipping. That's not how you treat customers if you want them to buy from you again. It's a terrible business practice.
Alex S.Sep 6, 2023
Got an order but never received a confirmation email or tracking number. Just an advertisement about future purchases showed up in my inbox. After a week, still nothing. You'll want to shop elsewhere and skip this site completely.
Mark J.Jan 4, 2022
Ordered 2 bottles in late September 2021 and they never arrived. Sent multiple messages with no response. This is a straight up scam and I've reported it to the proper agencies. Asked them to get back to me and was completely ignored.
Brian F.Nov 8, 2021
I was going to leave a negative review about not getting my order, but I actually received it today so I deleted it. Taking over a month was frustrating, especially since nobody was returning my calls and I kept getting emails pushing more products. But it did show up eventually. Starting the supplement tomorrow and hoping it boosts my immunity since I've already had covid.
Heather B.Oct 28, 2021
I put an order on a credit card I don't typically use and then saw $2000 in fraudulent charges right after. My credit card company took care of it and sent me a replacement card. I ordered some bottles in late September, got a shipping notification in early October saying it was on the way, but it still hadn't arrived by the end of the month. I disputed the charge with my card company because the whole situation felt off.
Michelle T.Oct 28, 2021
Used a credit card for this order that I don't normally use, and then $2000 in fraudulent charges showed up afterward. My card company sorted out the fraud and issued me a new card. I placed my order for a couple bottles on Sept 30th, got a shipment notification on October 8th, but the package never showed up by October 28th. Called my credit card company to dispute the charge because I was frustrated with the whole situation.
Vincent R.Oct 4, 2021
Great product overall. Think of it like a luxury car dealership where you can't complain about the price if you can't afford it. If health is important to you, you invest in quality products. Don't knock something you haven't tried or you're unwilling to pay for. Other quality supplement companies charge similar amounts, so this isn't any different. If it's not for your budget, that's fine, but don't criticize what you don't understand.
ZELENKO LABS Review FAQ
What is the average rating for Zelenko Labs?
Zelenko Labs is rated 3.4 out of 5 based on 18 customer reviews on RetailCoupons.com. The rating distribution shows strong polarization, with 56 percent five-star reviews and 39 percent one-star reviews, resulting in a middling average.
What do customers praise most about Zelenko Labs?
Positive reviewers consistently highlight product effectiveness for immune support and overall health, with many reporting long-term loyalty of several years. Customers also commend the comprehensive formulations that combine multiple nutrients in single products, fast shipping in some cases, and responsive customer service that addresses problems like damaged items quickly and personally.
What complaints do reviewers mention?
The primary complaint across reviews is shipping cost, which some customers report as being nearly as expensive as the product itself. This high postage makes repeat purchases difficult despite satisfaction with the actual supplements. A minor issue involved marketing emails mixing with order notifications, though the company explained this was due to third-party cookies.
Would customers recommend Zelenko Labs?
Long-term customers and those giving five-star ratings clearly recommend the products and indicate they plan to continue purchasing. However, shoppers frustrated by shipping costs express reluctance to repurchase despite liking the supplements, suggesting their recommendation is conditional on pricing changes.
How can I write a review of Zelenko Labs?
RetailCoupons.com welcomes customer reviews of Zelenko Labs products and service. Share your honest experience with product quality, effectiveness, customer service, shipping, and overall satisfaction to help other shoppers make informed decisions. Both positive and negative feedback helps build a balanced picture of the brand.