Iron B12 Vitamin D Magnesium Or B Complex Vitamins
Skip itA small market ($35K/yr) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$23.33avg listing price — sweet spot $15–$100
Price range
Great$13.33–$39.75cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great7.9%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+3.8%90-day search growth — must beat 0% to launch
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Review moat
Bad4,873.5avg incumbent reviews — the moat a new listing must climb
Competition
Bad85%top-5 click share — a locked-up shelf
Market size
Bad$35K$35K/yr · 19K searches
Is iron b12 vitamin d magnesium or b complex vitamins profitable on Amazon?
According to Flapen's Amazon United States niche tracking, iron b12 vitamin d magnesium or b complex vitamins is a $35K/yr Amazon United States market (19K searches/yr). The top 5 brands hold 89% of demand. Verdict: Skip it — 42/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
iron b12 vitamin d magnesium or b complex vitamins market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 2K–2K
- avg 250–500/product
- Revenue / yr
- $35K–$47K
- units × avg price
- Conversion rate
- 7.9%
- Avg BSR
- #207
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 90%
- Out of stock
- 3.1%
- Avg brand age
- 82 months
- Avg seller age
- 151 days
Competition: brands, sellers & click share
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
50
Top-5 brand share
89%
Top 20: 100%
Top-5 click share
85%
Top 20: 100%
Open market
8%
- Inessa61%
- Sports Research14%
- OLLY6%
- NatureBell5%
- AgeImmune3%
- Nature Made3%
- Open — no brand owns it (3 brands, 8%)
iron b12 vitamin d magnesium or b complex vitamins demand & seasonality
Weekly Amazon search volume, last 8 weeks — +3.8% search growth over the last 90 days.Top iron b12 vitamin d magnesium or b complex vitamins search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- inessa advanced multivitamin5K/yr
- advanced multivitamin3K/yr
- vitamin d magnesium omega-3 fatty acids b-vitamins and iron4K/yr
- inessa methylated multivitamin for men3K/yr
- iron b12 vitamin d magnesium or b complex vitamins4K/yr
Top iron b12 vitamin d magnesium or b complex vitamins 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 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Inessa Methylated Multivitamin for Men and Women - Advanced Natural Daily Mens Multivitamins with CoQ10 100mg Vitamins D3 K2 A B Complex Vitamins Folic Acid & Zinc - 60 Vegan Tablets
Inessa$39.754.6★2,695 rev
Sports Research Advanced Multivitamin 60 Veggie Capsules
Sports Research$21.454.2★358 rev
Omega 3 Fish Oil 1200mg (480mg EPA/360mg DHA per Capsule) High Strength Ultra Pure Eco Friendly 60 Capsules 2 Months Supply. GMP & Friends of The Sea Certification
Inessa$35.314.5★868 rev
OLLY Ultra Strength Womens Multi Softgels Overall Health and Immune Support Omega-3s Iron Vitamins A D C E B12 Daily Multivitamin 30 Day Supply - 60 Count
OLLY$17.414.6★7,945 rev
Methylated Multivitamin for Men and Women 240 Capsules | 27-in-1 Formula with Vitamins B Complex C D3 K2 NAD NAC CoQ10 Resveratrol Magnesium Zinc & More | Daily Essential Vitamins
NatureBell$21.644.7★328 rev
Newest
by launch dateSports Research Advanced Multivitamin 60 Veggie Capsules
Sports Research$21.45358 rev
Methylated Multivitamin for Men and Women 240 Capsules | 27-in-1 Formula with Vitamins B Complex C D3 K2 NAD NAC CoQ10 Resveratrol Magnesium Zinc & More | Daily Essential Vitamins
NatureBell$21.64328 rev
Micro Ingredients Pure Methylated Multivitamin 240 Capsules | 19-in-1 Formula with Vitamins C D B12 Folate Magnesium Zinc & More | Filler Free Non-GMO
Micro Ingredients$24.461,297 rev
Iron Supplement for Women & Men with Vitamins C B6 B12 & Folate for Iron Deficiency Blood Building & Energy Support Stomach Friendly Better Absorption Non-GMO No Gluten 60 Vegan Caps
Vitalibre$16.40750 rev
Nature Made Advanced Multivitamin Gummies for Adults 90 Gummies
Nature Made$13.33817 rev
Trending
90-day click momentumOmega 3 Fish Oil 1200mg (480mg EPA/360mg DHA per Capsule) High Strength Ultra Pure Eco Friendly 60 Capsules 2 Months Supply. GMP & Friends of The Sea Certification
Inessa$35.314.5★
Methylated Multivitamin for Men and Women 240 Capsules | 27-in-1 Formula with Vitamins B Complex C D3 K2 NAD NAC CoQ10 Resveratrol Magnesium Zinc & More | Daily Essential Vitamins
NatureBell$21.644.7★
Micro Ingredients Pure Methylated Multivitamin 240 Capsules | 19-in-1 Formula with Vitamins C D B12 Folate Magnesium Zinc & More | Filler Free Non-GMO
Micro Ingredients$24.464.7★
Sports Research Advanced Multivitamin 60 Veggie Capsules
Sports Research$21.454.2★
OLLY Ultra Strength Womens Multi Softgels Overall Health and Immune Support Omega-3s Iron Vitamins A D C E B12 Daily Multivitamin 30 Day Supply - 60 Count
OLLY$17.414.6★
What reviews say buyers love and hate about iron b12 vitamin d magnesium or b complex vitamins
What buyers praise and complain about, mined from review topics.What buyers love
“Great variety of vitamins”
“I feel its a quality product with a fair price point”
“Boost my energy”
“Ease of swallowing”
“Reasonably priced”
“no funky taste”
“These are excellent supplements”
“Easy to use”
“made with good quality ingredients”
“Very nice on help to strengthen your body”
What buyers complain about
“Very weird smell”
“Not a good vitamin for me”
“Disgusting taste”
“Something about the shells aren't right”
“gave me nausea”
“Little expensive”
“had to decrease to 1 pill”
“Allergic reaction”
“Not Ultra strength”
“over or upset stomach”
Top return reasons
Common iron b12 vitamin d magnesium or b complex vitamins questions
- Is iron b12 vitamin d magnesium or b complex vitamins profitable to sell on Amazon United States?
- The niche generates $35K/yr across 10 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +3.8%. Flapen's verdict: Skip it (42/100).
- How competitive is the iron b12 vitamin d magnesium or b complex vitamins niche?
- 9 brands and 50 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 89% of demand.
- What do buyers complain about in iron b12 vitamin d magnesium or b complex vitamins?
- Top complaints mined from reviews: Smell, Vitamin, Taste-Overall. The return rate is 0.0%.
- What does it cost to enter the iron b12 vitamin d magnesium or b complex vitamins niche?
- Listings span $13.33–$39.75; the average listing price is $23.33 (sweet spot $15–$100). The average incumbent carries 4,874 reviews — the moat a new listing must climb.