magnesium for dogs
Worth a lookShows low returns (0.0%), but soft demand (-38.9% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Avg price
Incredible$24.98avg listing price — sweet spot $15–$100
Price range
Great$9.95–$44.39cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Conversion
Good6.5%search→purchase rate — share of searches ending in a sale
Review moat
Good790avg incumbent reviews — the moat a new listing must climb
Brand share
Good74%top-5 brand share — brands hold most of the demand
Competition
Okay58%top-5 click share — leaders hold, buyers still browse
Market size
Bad$57K$57K/yr · 35K searches
Growth
Bad-38.9%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, magnesium for dogs is a $57K/yr Amazon United States market (35K searches/yr). The top 5 brands hold 74% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
magnesium for dogs market data
- Units sold / yr
- 2K–2K
- avg 0–100/product
- Revenue / yr
- $37K–$50K
- units × avg price
- Launch success
- —
- 3 of 4 new (360d)
- Conversion rate
- 6.5%
- Avg BSR
- #315
- Page quality
- 0%
- Prime
- 96%
- Sponsored
- 88%
- Out of stock
- 2.6%
- Avg brand age
- 61 months
- Avg seller age
- 167 days
Competition & brand share
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
34
Top-5 brand share
74%
Top 20: 100%
Top-5 click share
58%
Top 20: 97%
Open market
22%
- Rx Vitamins46%
- AMENQ hHEALTH12%
- PUAINTA7%
- Vita letuo5%
- Nutricost4%
- Pro Plan Veterinary Diets4%
Demand
Weekly Amazon search volume, last 21 weeks — -38.9% search growth over the last 90 days.Top magnesium for dogs search terms
- magnesium for dogs16K/yr
- rx vitamins for dogs7K/yr
- magnesium glycinate for dogs6K/yr
- pet rx3K/yr
- rx vitamins for pets3K/yr
Top magnesium for dogs products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 25 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Rx Vitamins Essentials for Dogs - Daily Vitamins & Minerals - with Blue Spirulina Kelp Powder and Milk Thistle - Complete Canine Vitamins and Essential Minerals Powder - 8 oz
Rx Vitamins$23.664.4★1,136 rev
Rx Vitamins Canine Minerals - Essential Minerals for Dogs - Calcium Magnesium Iron Supplement Bone and Joint Supplement for K9 Immune Support - 16oz
Rx Vitamins$31.774.4★419 rev
Liquid Magnesium Supplement 5-in-1 Magnesium Complex Drops Glycinate Taurate Oxide Malate Citrate w/L-Theanine Ashwagandha for Cortisol Sleep* Stress Muscle Magnesium Supplement
AMENQ hHEALTH$10.744.6★184 rev
PUAINTA Calming Chews for Dogs Dog Calming Supplement with Magnesium Glycinate Melatonin L-Theanine L-Tryptophan & Ashwagandha for Anxiety Stress Travel Separation & Thunderstorms (90 Count)
PUAINTA$34.304.6★33 rev
Magnesium Glycinate Liquid Drops Pure Magnesium Glycinate 400mg for Bone 6X High Absorption Liquid Magnesium Supplement Vegan Non-GMO Gluten-Free | 30 Servings
Vita letuo$9.954.5★419 rev
Newest
by launch datePUAINTA Calming Chews for Dogs Dog Calming Supplement with Magnesium Glycinate Melatonin L-Theanine L-Tryptophan & Ashwagandha for Anxiety Stress Travel Separation & Thunderstorms (90 Count)
PUAINTA$34.3033 rev
Magnesium Glycinate 500mg Liquid Drops Sugar-Free Magnesium Supplement Vegan Formula 60 mL Flavor Pineapple
Vita Guard$19.07202 rev
CalmBuddy Anxiety and Stress Relief Supplements GABA L-Theanine Magnesium Ashwagandha Rhodiola Rosea Chamomile L-Tryptophan Skullcap Taurine Valerian Root 60 Beef Flavor Chew By Clean Nutra Pets
Clean Nutraceuticals$24.9535 rev
Native Pet GutWell Stress Support - Dog Anxiety Relief & Calming Treats - Tasty Food Topper for Dog Stress and Anxiety Relief - Support Gut-Brain Axis with Triple-biotic Blend & Magnesium - 60 Scoops
Native Pet$28.14145 rev
Rx Vitamins Rx D3 - Cat & Dog Vitamins Liquid D3 Drops in MCT Oil - Vitamin D for Dogs & Cats to Manage Deficiency - Aids in Dog Immune Support and Calcium Absorption - Pet Vitamin D3-2oz
Rx Vitamins$21.6979 rev
Trending
90-day click momentumPUAINTA Calming Chews for Dogs Dog Calming Supplement with Magnesium Glycinate Melatonin L-Theanine L-Tryptophan & Ashwagandha for Anxiety Stress Travel Separation & Thunderstorms (90 Count)
PUAINTA$34.304.6★
JustFoodForDogs Calming Supplement for Dogs Human Grade Magnesium and Melatonin Dog Supplements Promotes Relaxation Soft Chews Superfood Blend Plant Based Dog Vitamins - 45 Count
JustFoodForDogs$23.754.2★
Purina Pro Plan Veterinary Supplements Calming Care Dog Supplements - Supports Dogs with Everyday Stress Anxious Behaviors and Separation Anxiety - 30 ct. Box
Pro Plan Veterinary Diets$31.224.2★
Liquid Magnesium Supplement 5-in-1 Magnesium Complex Drops Glycinate Taurate Oxide Malate Citrate w/L-Theanine Ashwagandha for Cortisol Sleep* Stress Muscle Magnesium Supplement
AMENQ hHEALTH$10.744.6★
Rx Vitamins Hepato Support for Dogs & Cats - Liver Support Supplement with Milk Thistle for Dogs and Cats - Hepatic Dog Supplement Enriched with Vitamin B Complex - 180 Capsules
Rx Vitamins$44.394.7★
What buyers say about magnesium for dogs
What buyers praise and complain about, mined from review topics.What buyers love
“Great taste”
“has really helped calm my dog down”
“Good produ”
“Easy to Use”
“Helps me sleep”
“I really like this magnesium”
“My dog enjoys this a lot”
“Calming Chews”
“Good value”
“Great flavor”
What buyers complain about
“Not effective”
“Horrible Taste”
“It's a little pricey”
“Disgusting Smell”
“causes severe diarrhea”
“This is not the same product as before”
“I bought it assuming unflavored means flavorless”
“he had seizures”
“The dosage seems off”
“I have a hard time falling asleep and staying asleep”
Top return reasons
Common questions
- Is magnesium for dogs profitable to sell on Amazon United States?
- The niche generates $57K/yr across 25 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -38.9%. Flapen's verdict: Worth a look (52/100).
- How competitive is the magnesium for dogs niche?
- 17 brands and 34 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 74% of demand.
- What do buyers complain about in magnesium for dogs?
- Top complaints mined from reviews: Functionality-Overall, Taste-Overall, Value For Money. The return rate is 0.0%.
- What does it cost to enter the magnesium for dogs niche?
- Listings span $9.95–$44.39; the average listing price is $24.98 (sweet spot $15–$100). The average incumbent carries 790 reviews — the moat a new listing must climb.