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Rated 5 out of 5 stars

I started taking Z Stack shortly after COVID hit. Haven't been sick. Yes, I didn't get COVID either. My immune system is thanking me. I also have started (a few months ago) talking CALM. It's enh... See more

Company replied

Rated 5 out of 5 stars

Thank you so much for the quick response, for the product that is beneficial for our health, and for your help also on sending us the vitamins to our current address. We truly appreciate it and value... See more

Company replied

Rated 5 out of 5 stars

This is my first year since Covid to be and feel healthy even during flue season. The Zelinco Protocol is a wonderful solution for rebuilding your immune system.

Company replied

Rated 5 out of 5 stars

I’ve been using Z stack for going on six years ever since Covid started and it has been my go to immune booster. I use the Z night now to get a restful sleep and they Zelin go laps is my trust is Sour... See more

Company replied

Company details

  1. Vitamin and Supplements Store
  2. Herbal Medicine Store

Written by the company

Zelenko Labs, built on the legacy of Dr. Vladimir Zelenko, creates products with purpose, precision, and integrity. Every formulation is made with high-quality ingredients and consistent standards, so you can feel confident in what you’re using. Thoughtful, reliable, and principled — Zelenko Labs products are made for people who care about quality. Our All American customer service team is here to help Monday through Friday, 9 AM to 5 PM EST — just give us a call at 1-800-ZELENKO (1-800-935-3656) or email our team at support@zstacklife.com


Contact info

4.5

Excellent

TrustScore 4.5 out of 5

50 reviews

5-star
4-star
3-star
2-star
1-star

Replied to 33% of negative reviews

Typically takes over 1 month to reply

How this company uses Trustpilot

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Rated 1 out of 5 stars

Scam for sure!!

Can't really rate it, never received it. Made several inquiries since 9 Nov 2021 when I ordered a bottle. Received responses, bogus tracking numbers, and a claim from them they sent it on 3 day expedited delivery. NEVER RECEIVED IT!
TERRIBLE COMPANY to do business with. Be warned!!

January 15, 2022
Unprompted review
Rated 1 out of 5 stars

I had just posted that I didn’t receive…

I had just posted that I didn’t receive my zstack but just deleted it because I received it today. It took a little over a month. I was upset because nobody returns calls
And we kept getting emails to order more.
Anyway will start taking them tomorrow! I’ve already had covid but wanted to continue to take the supplements to keep my immunity up!

November 9, 2021
Unprompted review
Rated 1 out of 5 stars

WARNING: I payed on a credit card I rarely use…

I payed on a credit card I rarely use and after there were $2000 worth of fraud that occurred after my legit order with this company. Is this a scam going on? My credit card company took care of the fraudulent charges and sent me a new card. My order for a few bottles of Z-stack placed on Sept. 30th then I received an email on October 8th saying product was in the mail and now on October 28th product still has not been received. I have called the credit card company to dispute this charge.

October 29, 2021
Unprompted review
Rated 4 out of 5 stars

I finally did receive the product after…

I finally did receive the product after 23 days. Of course I tried calling and emailing with no response. Supposedly they were waiting for a shipment to come in. There was no action till I contacted PayPal about the purchase. Then my item was shipped the next day. I don’t know about the quality yet but I know it comes highly recommended. I will give it a chance.
I want to add that I did receive the product and was sent an extra bottle. I’m going to give them another try. It certainly is easier taking it and only two pills rather than six or eight.

October 24, 2021
Unprompted review
Rated 1 out of 5 stars

No customer communication

I ordered a product (order 12085) from them on 2nd September for posting to Australia. For some reason it did not leave USA but was returned to them by US Postal Service on 20th September.
I have sent 4 emails, left a message on their website and never received one reply.
In frustration I rang them on 4th October (3rd Oct US time) and they promised to re-post to me and let me know the new Tracking details by 7th October, still no advice received as at 10th Oct. They may have a good product but their customer relations service is non existent.

October 11, 2021
Unprompted review
Rated 4 out of 5 stars

This is an excellent product

This is an excellent product. Just like in a Rolls Royce Car Dealer, if you can't afford to buy or don't even ask how much? Salesman will tell you, "you can't afford it so just leave..."..lol... You don't bad mouth Rolls Royce coz you can't afford it do you? you're already bias her so just sit down and don't say anything about it specially if you've never tried it and too cheap to spend $$ for your own health. Did you complain about Balance of Nature $69.95 a month with auto refill every 28 days as "preferred" to get the cheaper per bottle price? Just sit down dude. If its not for you, don't but it. It's very simple.

October 4, 2021
Unprompted review
Rated 5 out of 5 stars

A+ Experience

Good product, high quality from a great source. Dr. Zelenko is a leader in his field

August 20, 2021
Unprompted review
Rated 1 out of 5 stars

This site sells vitamins very expensively, and when posting review about the same, it does not appear.

These good people have a site where they do not publish genuinely made reviews of their product, pricing, service levels etc. - so I have chosen to report that particular fact about the site.

They charge an arm and a leg - which they are naturally free to do - but then when reporting that as a review, they do not post it. That is not genuine. I will indeed revise this statement here, if they start posting reviews honestly.

August 19, 2021
Unprompted review

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