immune system booster
Skip itSoft demand (-44.4% this quarter) — this niche doesn't clear our bar today.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Conversion
Good6.7%search→purchase rate — share of searches ending in a sale
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Price range
Okay£3.88–£20.76cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Okay3,318.83avg incumbent reviews — the moat a new listing must climb
Market size
Okay£132K£132K/yr · 219K searches
Avg price
Okay£8.99avg listing price — sweet spot $15–$100
Competition
Bad75%top-5 click share — a locked-up shelf
Growth
Bad-44.4%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, immune system booster is a £132K/yr Amazon United Kingdom market (219K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jan–Feb–Mar. Verdict: Skip it — 37/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
immune system booster market data
- Units sold / yr
- 15K–20K
- avg 750–1,000/product
- Revenue / yr
- £135K–£180K
- units × avg price
- Conversion rate
- 6.7%
- Avg BSR
- #209
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 83%
- Out of stock
- 6.5%
- Avg brand age
- 61 months
- Avg seller age
- 170 days
Competition & brand share
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.Brands
15 rising
Sellers
157
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
75%
Top 20: 100%
Open market
16%
- Immunace37%
- NEW LEAF PRODUCTS21%
- Berocca10%
- HealthEssent7%
- Sambucol7%
- BioSchwartz3%
- Open — no brand owns it (9 brands, 16%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -44.4% search growth over the last 90 days.Peak months: Jan, Feb, Mar · busiest ÷ quietest = 4.7×
Top immune system booster search terms
- immune support supplements35K/yr
- immune system booster65K/yr
- immune support32K/yr
- immunity booster17K/yr
- immune9K/yr
- immunace8K/yr
- immunity8K/yr
- immune system vitamins15K/yr
- immunace extra protection5K/yr
- immune booster for adults4K/yr
Top immune system booster 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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Vitabiotics Immunace Extra Protection Tablets 30s
Immunace£7.034.6★2,914 rev
Vitamin D3 Immune Booster Complex - with Vitamins D C B12 Zinc Turmeric & Elderberry - Immune Support - Made in the UK - Immunity Booster by New Leaf 120 Tablets
NEW LEAF PRODUCTS£6.914.5★673 rev
Berocca Immuno Multivitamin Gummies - Immune System Support Including Vitamin D C A B-Complex (B6 B7 B12) E and Zinc - Supplement for Women Men and Kids - 60 Gummies - Orange Flavour
Berocca£6.634.5★913 rev
Immunace Vitabiotics Original Tablets 30 Capsules
Immunace£3.884.6★2,914 rev
Immune System Booster & Vitality Support 120 Tablets High Strength Vitamin C Zinc Vitamin D3 & Elderberry 2 Month Supply Daily Immunity & Energy Multivitamin Vegan Friendly
HealthEssent£7.804.4★65 rev
Newest
by launch dateImmune System Booster & Vitality Support 120 Tablets High Strength Vitamin C Zinc Vitamin D3 & Elderberry 2 Month Supply Daily Immunity & Energy Multivitamin Vegan Friendly
HealthEssent£7.8065 rev
Berocca Immuno Multivitamin Gummies - Immune System Support Including Vitamin D C A B-Complex (B6 B7 B12) E and Zinc - Supplement for Women Men and Kids - 60 Gummies - Orange Flavour
Berocca£6.63913 rev
Vitamin D3 Immune Booster Complex - with Vitamins D C B12 Zinc Turmeric & Elderberry - Immune Support - Made in the UK - Immunity Booster by New Leaf 120 Tablets
NEW LEAF PRODUCTS£6.91673 rev
Tonic Health Immunity & Vitality Tablets - 4-in-1 Effervescent Multivitamins and Nutrients - Vitamin D Vitamin C and Zinc - Vegan No Sugar- Max Strength Tablets Raspberry & Lemon 20 Count
Tonic Health£7.11578 rev
BioSchwartz BioSchwartz Immune Support Supplement with Vitamin C 1000mg Zinc Elderberry Extract Ginger Root Beta Carotenes Immunity Boost for Adults Immune Defense Antioxidant Vitamins 90 Capsules
BioSchwartz£14.966,037 rev
Trending
90-day click momentumBioSchwartz BioSchwartz Immune Support Supplement with Vitamin C 1000mg Zinc Elderberry Extract Ginger Root Beta Carotenes Immunity Boost for Adults Immune Defense Antioxidant Vitamins 90 Capsules
BioSchwartz£14.964.6★
Nutravita Multivitamin Tablets for Women & Men - 365 Vegan Tablets - 1 Year Supply of Multivitamins - Immune System Support - Multi Vitamins - 26 Essential Active Vitamins & Minerals - Made in the UK
Nutravita£14.674.6★
Vitl Immune Support Supplement - 30 Vegan Capsules - with Vitamin D Vitamin C Folate Zinc Turmeric & Elderberry Extracts - 1 Month Supply
VITL£6.924.4★
SAMBUCOL IMMUNO FORTE GUMMIES 30 Count (Pack of 1)
Sambucol£6.434.6★
Berocca Immuno Multivitamin Gummies - Immune System Support Including Vitamin D C A B-Complex (B6 B7 B12) E and Zinc - Supplement for Women Men and Kids - 60 Gummies - Orange Flavour
Berocca£6.634.5★
What buyers say about immune system booster
What buyers praise and complain about, mined from review topics.What buyers love
“Good Value”
“Good value vitamins”
“Brilliant product, great seller”
“Great tasting option”
“Immune booster”
“Easy to chew”
“Bye Bye colds”
“Does its job perfectly”
“Ease of use”
“Nice flavour”
What buyers complain about
“I don't like the taste”
“This is expensive”
“Didnt help me”
“They are huge”
“Not easy to chew”
“unfortunately broke me out a lot around a week after starting taking them”
“each time had a horrible effect on stomach”
“Does not dissolve well”
“took this often without much relief”
“Bad being everything natural they mentioned but”
Top return reasons
Common questions
- Is immune system booster profitable to sell on Amazon United Kingdom?
- The niche generates £132K/yr across 18 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -44.4%. Flapen's verdict: Skip it (37/100).
- How competitive is the immune system booster niche?
- 15 brands and 157 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in immune system booster?
- Top complaints mined from reviews: Taste-Overall, Value For Money, Functionality-Overall. The return rate is 0.1%.
- When does demand for immune system booster peak?
- Demand peaks in Jan–Feb–Mar; the busiest month runs 4.7× the quietest.
- What does it cost to enter the immune system booster niche?
- Listings span £3.88–£20.76; the average listing price is £8.99 (sweet spot $15–$100). The average incumbent carries 3,319 reviews — the moat a new listing must climb.