l carnitine
Worth a lookShows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Market size
Incredible$4.9M$4.9M/yr · 2.4M searches
Avg price
Incredible$25.44avg listing price — sweet spot $15–$100
Price range
Great$9.02–$84.19cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great8.0%search→purchase rate — share of searches ending in a sale
Brand share
Great56%top-5 brand share — no brand owns this niche
Competition
Great40%top-5 click share — an open shelf
Review moat
Okay2,044.42avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Bad-6.3%90-day search growth — must beat 0% to launch
Competition
Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.Brands
22 rising
Sellers
56
Top-5 brand share
56%
Open market
38%
- Nutricost18%
- Cutler Nutrition14%
- NOW Foods10%
- NaturaLife Labs8%
- Nutrex Research6%
- BulkSupplements6%
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 36 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Cutler Nutrition Liquid L-Carnitine Fat Burner Supplement with Acetyl L-Carnitine & L-Carnitine Tartrate - Fat Burner Formula for Optimal Absorption Energy & Muscle Support | Sour Gummy Flavor
Cutler Nutrition$29.594.3★1,236 rev
Nutricost L-Carnitine Tartrate 1 000mg 240 Capsules - 500mg Per Capsule 120 Servings
Nutricost$19.674.6★4,208 rev
NaturaLife Labs Acetyl L-Carnitine (ALCAR) 1500 mg per Serving 100 Capsules Non-GMO Gluten-Free Vegan
NaturaLife Labs$16.884.5★13,578 rev
Nutrex Research L Carnitine 3000 - Clinically Dosed L-Carnitine Liquid for Energy Metabolism & Muscle Recovery - Delicious Strawberry Watermelon - No Sugar No Carbs No Stimulants - 31 Servings
Nutrex Research$21.434.4★716 rev
Nutricost Acetyl L-Carnitine (ALCAR) 500mg 180 Capsules 180 Servings - Non-GMO and Gluten Free 1 Capsule per Serving
Nutricost$18.474.6★6,240 rev
Newest
by launch date
OxyEnergy Liquid L-Carnitine Supplement 1000mg - Gentle for Daily Use Zero Calorie Sugar-Free Stim-Free Fat Burning & Endurance Booster 21 On-the-Go Individual Liquid Sticks
OxyEnergy$23.3067 rev
Nutrex Research Carniburn Liquid L Carnitine 3000mg Thermogenic Liquid Fat Burner for Men & Women with MitoBurn InnoSlim GBBGO - Stimulant Free Metabolism Booster - Strawberry Watermelon 31 SV
Nutrex Research$39.27116 rev
Micro Ingredients Acetyl L-Carnitine (ALCAR) 1 000 mg Per Serving 240 Softgels | 2-in-1 Formula with Alpha Lipoic Acid | Made with MCT Oil | Non-GMO Gluten Free
Micro Ingredients$22.5846 rev
Lean Sauce L-Carnitine Liquid 3500mg - Watermelon Ice
Pump Sauce$19.7737 rev
Lean Sauce Liquid L-Carnitine 3500 - Pre Workout Formula Stimulant Free for Optimal Absorption Energy & Muscle Support - 15% More (3500 vs 3000)
Pump Sauce$20.2047 rev
Trending
90-day click momentumMicro Ingredients Acetyl L-Carnitine (ALCAR) 1 000 mg Per Serving 240 Softgels | 2-in-1 Formula with Alpha Lipoic Acid | Made with MCT Oil | Non-GMO Gluten Free
Micro Ingredients$22.584.8★
OxyEnergy Liquid L-Carnitine Supplement 1000mg - Gentle for Daily Use Zero Calorie Sugar-Free Stim-Free Fat Burning & Endurance Booster 21 On-the-Go Individual Liquid Sticks
OxyEnergy$23.304.3★
Lean Sauce L-Carnitine Liquid 3500mg - Watermelon Ice
Pump Sauce$19.774.3★
Nutrex Research Carniburn Liquid L Carnitine 3000mg Thermogenic Liquid Fat Burner for Men & Women with MitoBurn InnoSlim GBBGO - Stimulant Free Metabolism Booster - Strawberry Watermelon 31 SV
Nutrex Research$39.274.2★
Lean Sauce Liquid L-Carnitine 3500 - Pre Workout Formula Stimulant Free for Optimal Absorption Energy & Muscle Support - 15% More (3500 vs 3000)
Pump Sauce$20.204.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -6.3% search growth over the last 90 days.Peak months: Apr · busiest ÷ quietest = 1.7×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Awesome taste”
“Excellent product”
“Great energy boost”
“Great supplement to boost weight loss”
“good value for the money”
“Effective”
“The flavor is really strong”
“As advertised”
“good health benefits”
“Easy to Take”
What buyers complain about
“No effective”
“The taste is absolutely disgusting”
“Waste of money”
“Haven't noticed any weight loss”
“Low dose”
“Side effects”
“Smells bad”
“Bad quality container”
“low on energy”
“the bottle leaks”