Is thymus profitable to sell on Amazon United States?

The niche generates $76K/yr across 13 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +15.1%. Flapen's verdict: Skip it (49/100).

How competitive is the thymus niche?

9 brands and 14 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 84% of demand.

What do buyers complain about in thymus?

Top complaints mined from reviews: Cold Relief, Dosage, Stress/Anxiety. The return rate is 0.0%.

When does demand for thymus peak?

Demand peaks in Aug–Sep–Nov; the busiest month runs 2.8× the quietest.

What does it cost to enter the thymus niche?

Listings span $14.17–$83.85; the average listing price is $42.14 (sweet spot $15–$100). The average incumbent carries 652 reviews — the moat a new listing must climb.

thymus

Skip it

A small market ($76K/yr) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Incredible$42.14

avg listing price — sweet spot $15–$100

Price range

Great$14.17–$83.85

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

Conversion

Great7.1%

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

Review moat

Good652.46

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+15.1%

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

Brand share

Okay84%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Competition

Bad72%

top-5 click share — a locked-up shelf

Market size

Bad$76K

$76K/yr · 25K searches

According to Flapen's Amazon United States niche tracking, thymus is a $76K/yr Amazon United States market (25K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Aug–Sep–Nov. Verdict: Skip it — 49/100.

Data updated Jul 27, 2026 · scored weekly · How we score niches

thymus market data

Units sold / yr: 1K–2K; avg 0–100/product
Revenue / yr: $53K–$63K; units × avg price
Conversion rate: 7.1%
Avg BSR: #2,146
Page quality: 0%
Prime: 92%
Sponsored: 85%
Out of stock: 0.0%
Avg brand age: 84 months
Avg seller age: 167 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 flat

Sellers

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

10%

Ancestral Supplements34%
Carlyle16%
Allergy Research Group16%
Standard Process Inc.13%
Vitamatic6%
Supreme Nutrition Products5%
Open — no brand owns it (3 brands, 10%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +15.1% search growth over the last 90 days.

Peak months: Aug, Sep, Nov · busiest ÷ quietest = 2.8×

Open Trend

Top thymus search terms

thymus13K/yr +32.9%4.1% conv.
thymus gland supplements7K/yr +11.5%5.4% conv.
thymus supplement5K/yr -20.3%3.6% conv.

All search terms

Top thymus 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 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Ancestral Supplements Grass Fed Ovine (Sheep) Thymus Glandular Extract 3000mg Histamine Energy Allergy and Immune Support Supplement with Grass Fed Beef Liver Non GMO 180 Capsules

Ancestral Supplements$64.974.7★2,023 rev

Carlyle Grass Fed Beef Thymus | 2100mg | 200 Capsules | Bovine Supplement

Carlyle$26.894.5★244 rev

Allergy Research Group ARG Thymus - Glandular Supplement - Freeze-Dried Tissue - Immune System Support - Lyophilized Extract - Hypoallergenic & Non-GMO - 37 Servings - 75 Vegicaps

Allergy Research Group$42.744.5★51 rev

Standard Process Thymex - Cytosol Extract Dietary Supplement for Immune Health - Gluten-Free Non-Dairy & Non-Soy - 90 Tablets (90 Servings)

Standard Process Inc.$25.194.7★863 rev

Nutricology Thymus - Ovine Thymus Glandular Extract - Freeze Dried Tissue Supplement - Immune Function Support - Hypoallergenic - 37 Servings - 75 Vegicaps

Allergy Research Group$43.124.6★67 rev

Newest

by launch date

Vitamatic Grass-Fed Beef Thymus + Liver 180 Capsules Freeze-Dried Non-GMO Bovine Liver Supplement Pasture-Raised Glandular-Based Formula

Vitamatic$23.643 rev

7mo ago

Supreme Nutrition Sheep Thymus - 100% Grass Fed and Finished in New Zealand 90 Capsules of Pure Ovine Thymus

Supreme Nutrition Products$48.7519 rev

2y ago

One Earth Health Grass Fed Thymus - New Zealand Sourced Thymus. 3 000mg per Serving 200 Count

One Earth Health$60.6934 rev

3y ago

Carlyle Grass Fed Beef Thymus | 2100mg | 200 Capsules | Bovine Supplement

Carlyle$26.89244 rev

5y ago

Swanson Raw Thymus Glandular 500 Milligrams 60 Capsules

Swanson$14.1787 rev

7y ago

What buyers say about thymus

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

What buyers love

Immunity Booster31%

“Works extremely well for immunity”

Cold Relief19%

“Stops a cold or virus in its tracks”

Quality-Overall12%

“Great product”

Vitamin10%

“Best supplements”

Value For Money8%

“Good price”

Nutritional Content5%

“Quality nutrients that we depend on”

Efficiency5%

“Works great”

Advertised Vs Actual Product3%

“Exactly what I ordered”

Allergies3%

“Congaplex really helps with my allergies”

What buyers complain about

Cold Relief50%

“When I feel like Im coming down with a cold I suck on two of these once a day”

Dosage11%

“It took a bit longer(3 days on this vs 1 day for meds)”

Stress/Anxiety11%

“Travel stresses my body a lot”

Common questions

Is thymus profitable to sell on Amazon United States?: The niche generates $76K/yr across 13 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +15.1%. Flapen's verdict: Skip it (49/100).
How competitive is the thymus niche?: 9 brands and 14 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 84% of demand.
What do buyers complain about in thymus?: Top complaints mined from reviews: Cold Relief, Dosage, Stress/Anxiety. The return rate is 0.0%.
When does demand for thymus peak?: Demand peaks in Aug–Sep–Nov; the busiest month runs 2.8× the quietest.
What does it cost to enter the thymus niche?: Listings span $14.17–$83.85; the average listing price is $42.14 (sweet spot $15–$100). The average incumbent carries 652 reviews — the moat a new listing must climb.