In The Company Of C.
Great customer service!
I messed up ordering but customer service corrected everything quickly and got my order sorted out and shipped.

At Cleriva, we create science-backed solutions that unlock the power of better breathing for deep sleep, laser focus, and lasting energy. Our mission is to elevate your quality of life by making better health effortless so you can feel your best every day.
Cleriva (cleriva.com) has 338 customer reviews on Five Star Index, with an average rating of 4.6 out of 5.
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338 approved reviews, newest moderated first
In The Company Of C.
I messed up ordering but customer service corrected everything quickly and got my order sorted out and shipped.
DOROTHY B.
The Customer Service/Support team was very prompt to assist with my order inquiry via email. They helped to explain and resolve the order issue in a professional manner. The commitment to customer satisfaction was evident and that is always a great value to customers. A+
Earl R.
The customer service is top notch. No questions asked return policy. Refund was immediately issued after I sent an email requesting it. It's not often that you get customer service like this and it's obvious this company takes it's customers satisfaction very serious.
Gwendolyn Makeda S.
I did my research and discovered that their product was the best choice for nasal light therapy. I'm very happy with it. It's a soothing, healing, spa-like treatment for my nasal passages.
Milena
Cleriva Support Team is extraordinery! I received NovaFlow that stoped working after a week! After we exchanged a few emails, they decided to send me another pair wich I am waiting for. Many thanks to the team and Coney, Cleriva Support Manager! Very dedicated and supportive person! Glad to contacted her!😊 Many THANKS and All the Best to Coney and the whole Cleriva Support Team! Milena
Mrs Mountford 1.
I am so glad that I discovered this brand. I have suffered with chronic rhinitis for years. So I decided to take the plunge and purchase the basic Nova Flow device. Within about three or four days the continuous nasal drip began to decrease. Alongside that the sinus pains in the back of my head began to diminish. At last I have something that stops me feeling if I am walking around with a lead weight inside my brain. I was so impressed that I purchased another kit, the full package this time with the steriliser, for my husband who is a heavy snorer . Already I can enjoy the simple pleasure of lying next to him in bed and listening to his gentle breathing without feeling that I am stuck in the middle of a pig Farm from all those strange grunting noises that have now, thankfully, vanished. Highly recommended!
Lowell G.
Easy no nonsense they took care of my issue.
Honestgal
This is something I've only used twice and I'll explain why I'm giving it the rating I am. More power to you if you can get this to stay in your nose! That's the first bit! Secondly I'm extremely sensitive to smells following hay-fever and sinus problems. To the point i will start coughing and gagging even if something is as little perfumed as possible and no chemicals. I've tried mainly nasal sprays which didn't do much unfortunately. The problem was very minimal until we had snow this January then it went up a notch to regular usage of tissues. The soft gentle pocket ones. To regular coughing and gagging. I've had antibiotics on maybe two occasions when it has gotten really bad. I've eliminated all chemicals. Do not use anything highly perfumed anymore. And have my nose covered when using anything like washing detergent etc because that will set it off. This product however is a nightmare to insert into your 👃 I dunno if I'm doing it wrong or my nose is too big but it's extremely uncomfortable too. I'll continue reporting on usage
Response from ClerivaFeb 16, 2026
Hi, Thank you for taking the time to explain your experience so honestly. It really helps, and I’m sorry to hear how sensitive your sinuses have been. That sounds exhausting to deal with, especially when even mild scents can trigger coughing or gagging. You definitely shouldn’t have to force the device into your nose. NovaFlow is designed to sit comfortably at the entrance of the nasal passages, not pushed in deeply. Some customers find it more comfortable if they remove the protective sleeves, as that can make it feel slimmer and easier to position. If you’d like, our support team can also walk you through positioning tips. That said, NovaFlow won’t be the perfect fit for everyone, and we genuinely appreciate you giving it a try. We offer a 120-day money-back guarantee with completely free returns, so you’re never at risk if it doesn’t work for you. For best results, most customers use NovaFlow consistently for a few more weeks. But if you’ve already decided it’s not right for you, or if it continues to feel uncomfortable, our support team is available 24/7 at [email protected] and will be happy to arrange a full refund. Thank you again for giving us a chance and for sharing your feedback. As a growing business, it truly means a lot to us.