I've been taking Z-Stack for close to 4 years and have not been sick one day since I started taking it. I am 72 years old, and full time daycare for a granddaughter in school so the germs do come home, but she also has not been sick since she started taking the Kid's Z-Spike gummies. I DO NOT understand all the bad reviews unless they are bots or angry people in general. I have needed to contact customer service MANY times and always (during business hours) get a live person with NO foreign accent, and they are always more than helpful! For those who are having problems with customer service, perhaps you're calling a wrong number. Their customer service # is 800-935-3656 and I NEVER have an issue with getting a wonderful representative. The product itself is a godsend. Miraculous to NEVER get sick at 72 years old in the 4 years I've been taking it. IGNORE BAD REVIEWS! Not true!
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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.comSee more
