weight gainer for skinny people
Worth a lookShows low returns (0.1%), but a small market ($57K/yr) keeps it on the watch list.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Avg price
Incredible£26.27avg listing price — sweet spot $15–$100
Price range
Great£8.18–£49.35cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Competition
Good42%top-5 click share — leaders hold, buyers still browse
Review moat
Okay1,679.71avg incumbent reviews — the moat a new listing must climb
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Conversion
Okay2.2%search→purchase rate — share of searches ending in a sale
Growth
Bad-15.5%90-day search growth — must beat 0% to launch
Market size
Bad£57K£57K/yr · 97K searches
According to Flapen's Amazon United Kingdom niche tracking, weight gainer for skinny people is a £57K/yr Amazon United Kingdom market (97K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
weight gainer for skinny people market data
- Units sold / yr
- 2K–3K
- avg 0–100/product
- Revenue / yr
- £53K–£66K
- units × avg price
- Conversion rate
- 2.2%
- Avg BSR
- #76
- Page quality
- 0%
- Prime
- 80%
- Sponsored
- 69%
- Out of stock
- 3.6%
- Avg brand age
- 58 months
- Avg seller age
- 166 days
Competition & brand share
The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
95
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
42%
Top 20: 78%
Open market
15%
- Reflex Nutrition45%
- Optimum Nutrition17%
- OZUNA NUTRITION9%
- The Bulk Protein Company6%
- NutriVigor5%
- Kinetica4%
- Open — no brand owns it (10 brands, 15%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -15.5% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Top weight gainer for skinny people search terms
- weight gainer for skinny people53K/yr
- reflex nutrition15K/yr
- reflex protein powder9K/yr
- reflex6K/yr
- high calorie5K/yr
- reflex protein2K/yr
- high calorie weight gain6K/yr
- reflex whey protein993/yr
Top weight gainer for skinny people 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Optimum Nutrition Serious Mass Protein Powder High Calorie Mass Gainer with Vitamins Creatine and Glutamine Vanilla 8 Servings 2.73 kg Packaging May Vary
Optimum Nutrition£28.014.5★12,618 rev
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving 60g Protein Creatine - High Calorie Post Workout or Before Bed Protein Shake (Chocolate Perfection 2 kg)
Reflex Nutrition£20.324.1★656 rev
ANABOLIC Weight GAIN Tablets - Quick Muscle Mass Pills Growth Potent Capsules
OZUNA NUTRITION£10.413.6★800 rev
Reflex Nutrition 100% Whey Protein - 80% Pure Whey Protein - EAA Amino Acids - No Added Sugar - Whey Protein Powder for Pre Workout & Post Workout Recovery (Vanilla 2kg 66 Servings)
Reflex Nutrition£45.354.5★261 rev
Reflex Nutrition Instant Mass Heavyweight - Mass Gainer - Over 1000 Kcal per Serving 60g Protein Creatine - High Calorie Post Workout or Before Bed Protein Shake (Strawberries & Cream 2 kg)
Reflex Nutrition£20.134.1★555 rev
Newest
by launch date
Reflex Nutrition Instant Mass Heavyweight Protein Shake Mix Mass Gainer Over 1000 Kcal per Serving 60 g Protein Creatine High Calorie Post Workout or Before Bed Vanila 2 kg
Reflex Nutrition£20.08218 rev
Reflex Nutrition Instant Mass Heavyweight Protein Shake Mix Mass Gainer Over 1000 Kcal per Serving 60 g Protein Creatine High Calorie Post Workout or Before Bed Salted Caramel 2 kg
Reflex Nutrition£20.3562 rev
Pure Creatine Monohydrate Powder - 315g (90 Servings) - Easy Dissolve Creatine Powder Unflavoured & Micronised (Not Creatine Gummies or Creatine Tablets) Vegan Creatine for Women and Men
Nutrition Geeks£8.185,215 rev
Reflex Nutrition Isolate Pro - 83% Premium Protein from Whey Isolate Protein Powder - Fast Absorption Low Lactose Low Fat Low Sugar Protein Shake - Muscle Gain (Chocolate 1.8kg 60 Servings)
Reflex Nutrition£48.4839 rev
Reflex Nutrition Isolate Pro - 83% Premium Protein from Whey Isolate Protein Powder - Fast Absorption Low Lactose Low Fat Low Sugar Protein Shake - Muscle Gain (Vanilla 1.8kg 60 Servings)
Reflex Nutrition£49.3521 rev
Trending
90-day click momentumReflex Nutrition Instant Mass Heavyweight Protein Shake Mix Mass Gainer Over 1000 Kcal per Serving 60 g Protein Creatine High Calorie Post Workout or Before Bed Salted Caramel 2 kg
Reflex Nutrition£20.353.6★
Reflex Nutrition Instant Mass Heavyweight Protein Shake Mix Mass Gainer Over 1000 Kcal per Serving 60 g Protein Creatine High Calorie Post Workout or Before Bed Vanila 2 kg
Reflex Nutrition£20.084.1★
The Bulk Protein Company SERIOUS GAINZ - Whey Protein Powder - Weight Gain Mass Gainer - 30g Protein Powders (Vanilla 5kg)
The Bulk Protein Company£27.994.0★
Reflex Nutrition Plant Based Protein - 21g Vegan Protein Powder (Pea Protein Brown Rice Protein & Pumpkin Seeds) - Digestive Enzymes & Vitamin B12 - Natural Flavours (Vanilla Bean 20 Servings)
Reflex Nutrition£15.654.3★
Reflex Nutrition One Stop Xtreme (4.35kg) Strawberries & Cream - Proteins - Protein Blend
Reflex Nutrition£41.354.4★
What buyers say about weight gainer for skinny people
What buyers praise and complain about, mined from review topics.What buyers love
“Good product as described”
“has no unpleasant taste or odour”
“Good price”
“Easy to mix”
“Great protein shake”
“As advertised”
“The flavour was subtle”
“Easy to use”
“Good taste and mixes well”
“consistent energy on you”
What buyers complain about
“very chalky powdery taste”
“It's not protein”
“Cheap for a reason”
“Does not dissolve”
“The flavour is much less intense than it smells like it would be”
“Performance-wise, the effects were subtle”
“Didnt put weight on even though I struggle with eating”
“making a chalky texture”
“Poor mix ability”
“Not the best”
Top return reasons
Common questions
- Is weight gainer for skinny people profitable to sell on Amazon United Kingdom?
- The niche generates £57K/yr across 45 tracked products. 90-day search growth is -15.5%. Flapen's verdict: Worth a look (51/100).
- How competitive is the weight gainer for skinny people niche?
- 16 brands and 95 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in weight gainer for skinny people?
- Top complaints mined from reviews: Taste-Overall, Nutritional Content, Value For Money. The return rate is 0.1%.
- When does demand for weight gainer for skinny people peak?
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- What does it cost to enter the weight gainer for skinny people niche?
- Listings span £8.18–£49.35; the average listing price is £26.27 (sweet spot $15–$100). The average incumbent carries 1,680 reviews — the moat a new listing must climb.