Is l glutamine profitable to sell on Amazon United Kingdom?

The niche generates £345K/yr across 18 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +5.7%. Flapen's verdict: Worth a look (54/100).

How competitive is the l glutamine niche?

14 brands and 36 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 72% of demand.

What do buyers complain about in l glutamine?

Top complaints mined from reviews: Smell, Taste-Overall, Value For Money. The return rate is 0.0%.

When does demand for l glutamine peak?

Demand is steady year-round — the busiest month runs 1.2× the quietest.

What does it cost to enter the l glutamine niche?

Listings span £3.80–£23.32; the average listing price is £10.72 (sweet spot $15–$100). The average incumbent carries 1,346 reviews — the moat a new listing must climb.

l glutamine

Worth a look

Shows low returns (0.0%), but soft demand (+5.7% this quarter) keeps it on the watch list.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Great11.5%

search→purchase rate — share of searches ending in a sale

Brand share

Good72%

top-5 brand share — brands hold most of the demand

Review moat

Good1,346.39

avg incumbent reviews — the moat a new listing must climb

Market size

Good£345K

£345K/yr · 281K searches

Price range

Okay£3.80–£23.32

cheapest to priciest tracked listing — scored on the share inside $15–$100

Avg price

Okay£10.72

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay63%

top-5 click share — leaders hold, buyers still browse

Growth

Okay+5.7%

90-day search growth — must beat 0% to launch

Signals Low Review Barrier

According to Flapen's Amazon United Kingdom niche tracking, l glutamine is a £345K/yr Amazon United Kingdom market (281K searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 54/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

l glutamine market data

Units sold / yr: 30K–40K; avg 1,000–1,250/product
Revenue / yr: £322K–£429K; units × avg price
Conversion rate: 11.5%
Avg BSR: #11
Page quality: 0%
Prime: 100%
Sponsored: 83%
Out of stock: 0.5%
Avg brand age: 68 months
Avg seller age: 162 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

14 falling

Sellers

Top-5 brand share

72%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

23%

Applied Nutrition37%
Bulk17%
swiss bioenergetics7%
Solgar6%
Nutrivo6%
ALPHA015%

Demand & seasonality

Weekly Amazon search volume, last 102 weeks — +5.7% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.2×

Open Trend

Top l glutamine search terms

l glutamine78K/yr +12.0%9.5% conv.
glutamine78K/yr -13.7%10.3% conv.
l glutamine powder44K/yr +42.4%9.4% conv.
glutamine powder32K/yr -2.6%10.9% conv.
l-glutamine24K/yr -11.1%10.0% conv.
l-glutamine powder8K/yr +25.4%11.6% conv.
l glutamine powder for gut health5K/yr +95.5%6.2% conv.
l-glutamine nutritional supplements8K/yr -21.1%5.4% conv.
lglutamine3K/yr -21.7%12.6% conv.

All search terms

Top l glutamine 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Applied Nutrition L Glutamine Powder - Amino Acid Muscle Strength & Recovery Boosts Immune System Unflavoured (250g - 50 Servings)

Applied Nutrition£9.664.6★189 rev

Bulk Pure L-Glutamine Powder Unflavoured 500 g Packaging May Vary

Bulk£12.304.5★3,339 rev

Applied Nutrition L Glutamine Powder - Amino Acid Muscle Strength & Recovery Boosts Immune System Unflavoured (500g - 100 Servings)

Applied Nutrition£14.944.6★189 rev

L-Glutamine 500mg 90 Capsules - Pure Amino Acid with no fillers or Binders - Suitable for Vegetarians and Vegans Exclusively Manufactured in The UK

swiss bioenergetics£7.224.5★784 rev

Solgar L-Glutamine 1000 mg Tablets - Pack of 60 - Supports Muscle Function - for Active Lifestyles - Great Addition to Whey Powder - Vegan

Solgar£12.734.6★1,228 rev

Newest

by launch date

Applied Nutrition L Glutamine Powder - Amino Acid Muscle Strength & Recovery Boosts Immune System Unflavoured (500g - 100 Servings)

Applied Nutrition£14.94189 rev

9mo ago

Warrior Glutamine 500g - Pure Micronised L-Glutamine Powder - Amino Acid - Muscle Growth & Recovery Supplement- Gut Health - Mix in Protein - Pre and Post Workout - 100 Servings (Unflavoured)

Warrior£10.87295 rev

1y ago

Solaray L-Glutamine Free Form 100 Vegan Capsules 500mg per Capsule

SOLARAY£10.9660 rev

1y ago

Nutrivo£7.30176 rev

2y ago

Applied Nutrition L Glutamine Powder - Amino Acid Muscle Strength & Recovery Boosts Immune System Unflavoured (250g - 50 Servings)

Applied Nutrition£9.66189 rev

2y ago

What buyers say about l glutamine

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall22%

“Great quality glutamine supplement”

Value For Money13%

“its usually quite affordable”

Regulates Digestion10%

“It has definitely helped reduce bloating”

Vitamin8%

“Had this with other supplements”

Taste-Overall7%

“very slight salty taste”

Nutritional Content6%

“In terms of performance, its solid for recovery support and general supplementation, especially if you train regularly”

Advertised Vs Actual Product5%

“Item as described”

Blend/Ratio4%

“Mixes & tastes ok”

Ease Of Use4%

“doesnt take up much space”

Solubility2%

“Tastes good and dissolves well in drinks”

What buyers complain about

Smell19%

“Chemical smell”

Taste-Overall10%

“it tastes fishy”

Value For Money9%

“cannot get to the shops or afford the more expensive versions”

Functionality-Overall7%

“Does not work”

Muscle Pain Relief7%

“yet I still not feeling its helping reducing muscle sore after workout”

Ease Of Chewing/Swallowing4%

“to swallow due to the odd shape”

Size-Overall4%

“These tablets are huge”

Dosage3%

“If you are the sort of person who can what are a paracetamol then maybe you might have a problem taking them”

Salt Content2%