Mag Tab Sr
Skip itA concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Conversion
Incredible23.7%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$27.33avg listing price — sweet spot $15–$100
Price range
Incredible$19.14–$39.16cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad4,095avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-7.3%90-day search growth — must beat 0% to launch
Market size
Bad$80K$80K/yr · 12K searches
Competition
Bad100%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Is mag tab sr profitable on Amazon?
According to Flapen's Amazon United States niche tracking, mag tab sr is a $80K/yr Amazon United States market (12K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
mag tab sr market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 1K–1K
- avg 100–250/product
- Revenue / yr
- $27K–$34K
- units × avg price
- Conversion rate
- 23.7%
- Avg BSR
- #1,050
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 9.9%
- Avg brand age
- 91 months
- Avg seller age
- 182 days
Competition: brands, sellers & click share
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 rising
Sellers
15
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
100%
Top 20: 100%
Open market
0%
- MAG-TAB SR88%
- Swanson7%
- Slow-Mag5%
mag tab sr demand & seasonality
Weekly Amazon search volume, last 33 weeks — -7.3% search growth over the last 90 days.Top mag tab sr search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- mag tab sr5K/yr
- mag tab sr 84 mg4K/yr
- mag-tab sr2K/yr
- magtab sr2K/yr
Top mag tab sr products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 3 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Extended Release Magnesium Lactate Delivery for 10x Better Absorption-Mag-Tab SR (Sustained Release) 100 Count-Supports Sleep Muscle Cramps Magnesium Deficiency Health Issue
MAG-TAB SR$39.164.7★700 rev
Swanson Magnesium Lactate - Lactose-Free Mineral Supplement for Muscle & Bone Health Support* - Gentle on the Stomach - Non-GMO & Gluten-Free - 120 Capsules
Swanson$19.144.5★601 rev
SlowMag Muscle & Heart Magnesium Chloride Supplement with Calcium 180 Count Supports Muscle Relaxation Heart Nerve & Bone Health High Absorption
Slow-Mag$23.704.7★10,984 rev
Newest
by launch dateSlowMag Muscle & Heart Magnesium Chloride Supplement with Calcium 180 Count Supports Muscle Relaxation Heart Nerve & Bone Health High Absorption
Slow-Mag$23.7010,984 rev
Swanson Magnesium Lactate - Lactose-Free Mineral Supplement for Muscle & Bone Health Support* - Gentle on the Stomach - Non-GMO & Gluten-Free - 120 Capsules
Swanson$19.14601 rev
Extended Release Magnesium Lactate Delivery for 10x Better Absorption-Mag-Tab SR (Sustained Release) 100 Count-Supports Sleep Muscle Cramps Magnesium Deficiency Health Issue
MAG-TAB SR$39.16700 rev
Trending
90-day click momentumExtended Release Magnesium Lactate Delivery for 10x Better Absorption-Mag-Tab SR (Sustained Release) 100 Count-Supports Sleep Muscle Cramps Magnesium Deficiency Health Issue
MAG-TAB SR$39.164.7★
Swanson Magnesium Lactate - Lactose-Free Mineral Supplement for Muscle & Bone Health Support* - Gentle on the Stomach - Non-GMO & Gluten-Free - 120 Capsules
Swanson$19.144.5★
SlowMag Muscle & Heart Magnesium Chloride Supplement with Calcium 180 Count Supports Muscle Relaxation Heart Nerve & Bone Health High Absorption
Slow-Mag$23.704.7★
What reviews say buyers love and hate about mag tab sr
What buyers praise and complain about, mined from review topics.What buyers love
“Great Product”
“seriously reduces my Muscle Cramps”
“Good magnesium supplement”
“Cap totally worth it”
“it has been very effective”
“Very useful”
“Helps SLEEP and cramps”
“Correct item, correct quantity & delivered on time”
“Great Product I was told to take it with vitamin B6 for better results it seams to be working after 2 weeks”
“Helps with heart palpitations”
What buyers complain about
“These pills have such a sticky outside surface that its like glue going down”
“its so hard for the tablet to make it down your esophagus”
“Has sulfites”
“cost way more if getting from pharmacy then on here”
“Ok. Pretty big pill”
“Only four stars because the dosage is two pills instead of one”
“you can choke on it”
“Ever since my Chemotherapy Treatments I have had a multitude of very Low Magnesium levels”
“Do not try to swallow this tablet as its sticky as paste”
Common mag tab sr questions
- Is mag tab sr profitable to sell on Amazon United States?
- The niche generates $80K/yr across 3 tracked products. 90-day search growth is -7.3%. Flapen's verdict: Skip it (39/100).
- How competitive is the mag tab sr niche?
- 3 brands and 15 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in mag tab sr?
- Top complaints mined from reviews: Adhesion/Stickiness, Regulates Digestion, Salt Content. The return rate is 0.0%.
- What does it cost to enter the mag tab sr niche?
- Listings span $19.14–$39.16; the average listing price is $27.33 (sweet spot $15–$100). The average incumbent carries 4,095 reviews — the moat a new listing must climb.