prolon
Worth a lookShows low returns (0.0%), but soft demand (-27.7% this quarter) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Avg price
Incredible$46.12avg listing price — sweet spot $15–$100
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Brand share
Good71%top-5 brand share — brands hold most of the demand
Market size
Good$277K$277K/yr · 187K searches
Competition
Okay57%top-5 click share — leaders hold, buyers still browse
Price range
Okay$12.98–$200.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Okay2,070.11avg incumbent reviews — the moat a new listing must climb
Conversion
Okay3.2%search→purchase rate — share of searches ending in a sale
Growth
Bad-27.7%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, prolon is a $277K/yr Amazon United States market (187K searches/yr). The top 5 brands hold 71% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 8, 2026 · scored weekly · How we score niches
prolon market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- $231K–$277K
- units × avg price
- Conversion rate
- 3.2%
- Avg BSR
- #208
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 95%
- Out of stock
- 0.0%
- Avg brand age
- 53 months
- Avg seller age
- 137 days
Competition & brand share
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.Brands
14 falling
Sellers
19
Top-5 brand share
71%
Top 20: 100%
Top-5 click share
57%
Top 20: 100%
Open market
24%
- Ultima Replenisher36%
- FAST LYTE11%
- Prolon10%
- FAST:RX8%
- FSTN7%
- NUTRAHARMONY5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -27.7% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.7×
Top prolon search terms
- fasting120K/yr
- fasting supplement29K/yr
- ultima crave killer10K/yr
- fasting drink7K/yr
- fasting supplements8K/yr
- crave killer3K/yr
- ultima crave killer electrolytes4K/yr
- intermittent fasting drink4K/yr
- bondi pure fasting drink2K/yr
Top prolon 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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ultima Replenisher Crave Killer Supplement and Electrolytes Powder Tropical Fusion 14 Stickpacks Hydration Packets that Kick Cravings to The Curb
Ultima Replenisher$22.114.5★859 rev
Fast Lyte Fasting Electrolyte Supplement Powder | No Sugar Unflavored Raw Electrolytes | 25% RDI Magnesium and Potassium with Trace Minerals | Carnivore & Keto Friendly | Sugar Free Fasting Salts
FAST LYTE$39.494.5★1,206 rev
FSTN Chocolate Electrolytes Fasting Supplement Crave Killer Hydration & Energy Zero-Sugar Plus Ketones & Organic Cocoa.
FSTN$41.534.3★120 rev
FAST:RX Fasting Electrolyte Drink | Zero Sugar Zero Calorie Hydration with Vitamins & Minerals | Intermittent Fasting & Keto | Lemon | Sparkling | 16oz 12-Pack
FAST:RX$35.594.2★133 rev
Ultima Replenisher Daily Electrolyte Powder Original Variety Pack 20 Stickpacks Zero Sugar Hydration Packets with 6 Electrolytes and Minerals Sugar Free Plant Based & Keto Friendly Drink Mix
Ultima Replenisher$20.184.6★20,397 rev
Newest
by launch date
1-Day Juice Fasting Collagen & Sustained Energy Pack | Ancient Remedies for Gentle Detox Metabolism Boost | Prebiotics & Minerals Antioxidants | Low Sugar | Organic 612 fl oz BPA-Free Bottles
KARVIVA$34.4559 rev
The Good Intentions Club Fasting Electrolytes - Unflavored Electrolyte Powder - 100 Servings - Fasting Salts - Fasting Supplement - Electrolytes for Fasting
The Good Intentions Club$23.02256 rev
FSTN Chocolate Electrolytes Fasting Supplement Crave Killer Hydration & Energy Zero-Sugar Plus Ketones & Organic Cocoa.
FSTN$41.53120 rev
Ultima Replenisher Crave Killer Supplement and Electrolytes Powder Tropical Fusion 14 Stickpacks Hydration Packets that Kick Cravings to The Curb
Ultima Replenisher$22.11859 rev
Enzymedica Fasting Today Drink Mix - Electrolyte Powder Supplement for Intermittent Fasting Support for Hydration Appetite & Muscle Health Keto Friendly Tropical Pineapple Flavor - 8.75 oz
Enzymedica$26.66238 rev
Trending
90-day click momentum1-Day Juice Fasting Collagen & Sustained Energy Pack | Ancient Remedies for Gentle Detox Metabolism Boost | Prebiotics & Minerals Antioxidants | Low Sugar | Organic 612 fl oz BPA-Free Bottles
KARVIVA$34.454.3★
Hi-Lyte Electrolytes for Fasting Immune Support and Rapid Hydration | 48 Servings | NO Calories NO Sugar | 20%+ More Potassium Magnesium & Zinc
Hi-Lyte$20.294.3★
FAST LYTE No Sugar Electrolytes Powder in the Raw | Mix in Coffee Soup Juice Water Smoothies Broth Anything | No Sweeteners or Flavorings | Keto & Sugar Free | Non-GMO & Vegan
FAST LYTE$29.184.6★
Prolon 5 Day Fasting Kit | Fasting Program for Women & Men | Developed to Not Break Your Fast | Low Calorie Pre Made Meals & Snacks | Plant Based Ingredients for Diet Support | Classic Flavors
Prolon$200.943.8★
MYOXCIENCE Berberine Fasting Accelerator | Himaberb Berberine HCL with ALA (Alpha Lipoic Acid) and Biotin (90 Capsules)
MYOXCIENCE$30.304.4★
What buyers say about prolon
What buyers praise and complain about, mined from review topics.What buyers love
“Taste great, arrived on time”
“variety of flavors”
“Super cheap for the quality”
“Helps in hydration”
“Dissolves easily”
“Good value for the money”
“As described”
“Very easy to make”
“not too salty”
“helps my body stay healthy”
What buyers complain about
“Artificial taste”
“Bad flavor”
“just a bit salty”
“Too expensive”
“has a weird sweet taste”
“Cant swallow”
“Im pretty sensitive to artificial sweetener”
“Makes you sick”
“Doesn't work”
“No quality control”
Top return reasons
Common questions
- Is prolon profitable to sell on Amazon United States?
- The niche generates $277K/yr across 19 tracked products. 90-day search growth is -27.7%. Flapen's verdict: Worth a look (52/100).
- How competitive is the prolon niche?
- 14 brands and 19 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 71% of demand.
- What do buyers complain about in prolon?
- Top complaints mined from reviews: Taste-Overall, Flavor, Salt Content. The return rate is 0.0%.
- When does demand for prolon peak?
- Demand is steady year-round — the busiest month runs 1.7× the quietest.
- What does it cost to enter the prolon niche?
- Listings span $12.98–$200.94; the average listing price is $46.12 (sweet spot $15–$100). The average incumbent carries 2,070 reviews — the moat a new listing must climb.