Matterdays Reviews 29

TrustScore 4.5 out of 5

4.7

While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more

To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more

See what reviewers are saying

Rated 5 out of 5 stars

This supplement is great; both of my dogs had a noticeable improvement in their playfulness and energy levels after 3-4 days of taking. The powder goes on easily and my two dogs; a 60 lb female German... See more

Rated 5 out of 5 stars

Great Experience! The website made it easy to determine my pets needs and make an informaed decisiomn about his health supplement needs. Delivery was super fast and my black lab has been doing great o... See more

Rated 5 out of 5 stars

My dog is obsessed with this product! Matterdays is recommended to go in wet food, but I only give my dog dry food so I was unsure of how to apply. I just started sprinkling it on top and she scarfs i... See more

Rated 4 out of 5 stars

The cat longevity supplement space is thin, and most options are reactive rather than prevention-first. MD1 is different; it supports holistic healthy aging and works for cats. Luna has been on it... See more

Company details

Written by the company

Matterdays – Pet Longevity Matterdays is a science-driven pet health company focused on helping dogs and cats live longer, healthier lives. Our flagship product, MD1, is a daily longevity powder formulated to support six critical systems in the body — gut health, immune function, joints, heart health, cellular energy, and longevity pathways. Every batch is third-party tested for heavy metals and purity, and our formulations are developed alongside veterinary and nutritional experts. At Matterdays, we believe preventive care is the future of pet health. One simple daily ritual can help support the health of the companion who gives you their whole life.


Contact info

4.7

Excellent

TrustScore 4.5 out of 5

29 reviews

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

Asks customers to review

This company invites their customers to review, whether positive or negative

How this company uses Trustpilot

See how their reviews and ratings are sourced, scored, and moderated.

Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

My dog Milo has more pep in his step…

My dog Milo has more pep in his step since starting Matterdays! This daily powder mixes easily, and he licks the bowl clean. It supports everything from joints and gut health to overall vitality. Noticeable energy boost in just a few days, I would highly recommend this product!

April 11, 2026
Unprompted review
Rated 5 out of 5 stars

I waniIt has made a noticeable difference in my dog’s daily life.

I wanted to share my experience because it has made a noticeable difference in my dog’s daily life. I’ve seen a positive change in her overall energy and well-being.
What I appreciate most about this company is their absolute transparency. It is hard to find brands these days that are completely open about their sourcing and ingredients. Knowing exactly what is going into my dog's system gives me a lot of peace of mind. If you’re looking for high-quality support for your pet from a company that clearly cares about honesty and results, I highly recommend them!

April 9, 2026
Unprompted review
Rated 5 out of 5 stars

Great Company, Even Better Products

I had a great experience with Matterdays—their supplements were easy to use and my dog genuinely loved them. I noticed a clear improvement in energy and overall vitality, which aligns with their focus on science-backed, preventive pet health. On top of that, their customer service was impeccable, making the entire experience seamless and enjoyable.

March 20, 2026
Unprompted review
Rated 5 out of 5 stars

My dog only eat dry food

My dog only eat dry food, so i was not sure how will matterdays will work. Well, my boy loved it! also, i have some doubts before buying and ill need to confirm that CS is excellent!

April 1, 2026
Unprompted review
Rated 5 out of 5 stars

I really loved this suplement

I really loved this suplement! First of all, using the website was pretty easy, shipment was super fast and my lab is doing great so far, i think im already seeing positive results!

April 1, 2026
Unprompted review
Rated 5 out of 5 stars

I sprinkled Matterdays MD1 and saw a difference

I sprinkled Matterdays MD1 into my senior pup’s breakfast for a month, and wow—what a difference! This vet-formulated powder mixes in easily (no suspicious side-eye from the doggo) and packs a smart blend and more to support joints, gut health, energy, and long-term cellular vitality. Everything my doggo needs especially now. I want many years with her and this is helping.
After a few weeks, I noticed better digestion (fewer “oops” moments), and that playful spark coming back. It’s not a miracle overnight, but it’s like giving your dog a daily tune-up for more happy, active days together.
If you’re tired of single added supplements, this all-in-one booster is worth trying. Highly recommend for dogs of any age who deserve extra good Matterdays!

February 3, 2026
Unprompted review
Rated 5 out of 5 stars

This stuff works.

This supplement is great; both of my dogs had a noticeable improvement in their playfulness and energy levels after 3-4 days of taking. The powder goes on easily and my two dogs; a 60 lb female German Shepherd, and a 65 lb Bernese Golden Mix are much more interested in their kibble with Matterdays on top.

March 5, 2026
Rated 4 out of 5 stars

Cat longevity and stress resilience-both noticeably better


The cat longevity supplement space is thin, and most options are reactive rather than prevention-first. MD1 is different; it supports holistic healthy aging and works for cats. Luna has been on it for four weeks. Her vitality has improved noticeably, and her stress resilience has shifted; she's calmer in situations that used to rattle her. Her coat is also in the best condition I can remember. For cat owners who take their pet's longevity seriously, this is the daily supplement worth having.

March 21, 2026
Unprompted review
Rated 5 out of 5 stars

Prevention-first and every system supported — this is the one

I don't want to wait until Rosie has problems to start thinking about her longevity. Matterdays is built for that mindset, daily support across every system, science-backed, and zero inactive ingredients. The changes are real: more sustained energy, better gut health, a calmer temperament, and a coat that's noticeably healthier. Her immune resilience also seems stronger, she's been consistently well through a busy social period at the dog park. This is what daily pet wellness should look like.

March 18, 2026
Unprompted review
Rated 5 out of 5 stars

Quality dog longevity powder

I cannot say enough good things about Matterdays! From the moment we started using it, I noticed a real difference in my dog’s overall energy, coat, and mood. It’s so reassuring to feel like I’m actively supporting their long-term health in such an easy way.

The powder blends seamlessly into meals—no fuss, no picky-eater issues—and it’s clear the ingredients are thoughtfully chosen with wellness in mind. Within just a few weeks, my dog seemed more vibrant, playful, and comfortable, especially during walks and playtime.

If you’re looking for a simple, high-quality supplement to support your dog’s longevity and vitality, I highly recommend giving Matterdays Dog Longevity Powder a try. It’s been a total game-changer for us!

March 19, 2026
Unprompted review
Rated 5 out of 5 stars

Thank you for making it so easy….

I love how easy this supplement makes it to take great care of my dog. It’s awesome knowing all the ingredients are high quality, and I’m really looking forward to seeing the benefits. The taste test was a huge success!

March 6, 2026
Rated 5 out of 5 stars

My dog is obsessed with this product

My dog is obsessed with this product! Matterdays is recommended to go in wet food, but I only give my dog dry food so I was unsure of how to apply. I just started sprinkling it on top and she scarfs it down immediately, then begs for more. It smells fresh and has really clean ingredients. We're so happy we tried it!

February 12, 2026

The Trustpilot Experience

Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.

Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.

Learn more about other kinds of reviews.

We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.

Learn about Trustpilot’s review process.

Here are 8 tips for writing great reviews.

Verification can help ensure real people are writing the reviews you read on Trustpilot.

Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.

Take a closer look