Is phentermine 37.5 mg without prescription profitable to sell on Amazon United States?

The niche generates $226K/yr across 14 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -4.3%. Flapen's verdict: Skip it (48/100).

How competitive is the phentermine 37.5 mg without prescription niche?

11 brands and 28 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 84% of demand.

What do buyers complain about in phentermine 37.5 mg without prescription?

Top complaints mined from reviews: Functionality-Overall, Weight Loss, Side Effects. The return rate is 0.0%.

When does demand for phentermine 37.5 mg without prescription peak?

Demand peaks in Apr–May–Aug; the busiest month runs 2.5× the quietest.

What does it cost to enter the phentermine 37.5 mg without prescription niche?

Listings span $13.23–$59.64; the average listing price is $34.72 (sweet spot $15–$100). The average incumbent carries 5,892 reviews — the moat a new listing must climb.

phentermine 37.5 mg without prescription

Skip it

A concentrated shelf (top 5 take 77% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Quality gap

Incredible3.9★

avg incumbent rating — lower means beatable quality

Avg price

Incredible$34.72

avg listing price — sweet spot $15–$100

Price range

Great$13.23–$59.64

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

Market size

Okay$226K

$226K/yr · 402K searches

Brand share

Okay84%

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

Review moat

Bad5,892.14

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.3%

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

Conversion

Bad1.6%

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

Competition

Bad77%

top-5 click share — a locked-up shelf

Signals Quality Gap

According to Flapen's Amazon United States niche tracking, phentermine 37.5 mg without prescription is a $226K/yr Amazon United States market (402K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Apr–May–Aug. Verdict: Skip it — 48/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

phentermine 37.5 mg without prescription market data

Units sold / yr: 6K–8K; avg 500–750/product
Revenue / yr: $208K–$278K; units × avg price
Conversion rate: 1.6%
Avg BSR: #786
Page quality: 0%
Prime: 86%
Sponsored: 86%
Out of stock: 2.2%
Avg brand age: 54 months
Avg seller age: 143 days

Competition & brand share

The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.

Brands

11 falling

Sellers

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

77%

Top 20: 100%

Open market

12%

PhenAprin33%
Vitamart25%
Generic19%
Phenelite4%
KAKA DR4%
Performacal3%
Open — no brand owns it (5 brands, 12%)

Demand & seasonality

Weekly Amazon search volume, last 97 weeks — -4.3% search growth over the last 90 days.

Peak months: Apr, May, Aug · busiest ÷ quietest = 2.5×

Open Trend

Top phentermine 37.5 mg without prescription search terms

phentermine 37.5 mg without prescription293K/yr -9.0%1.7% conv.
phen37K/yr +41.9%0.1% conv.
adipex weight loss pills 37.5 no prescription24K/yr -23.3%1.6% conv.
phentermine 37.5 diet appetite suppressant6K/yr +304.2%0.2% conv.
phentramine7K/yr +55.3%0.6% conv.
phentermine without prescription14K/yr -30.0%1.6% conv.
phentermine 37.5 mg without prescription weight loss4K/yr +1.2%1.4% conv.
phenrx5K/yr -8.9%0.4% conv.
phenemine diet pills 37.5 extra strength4K/yr -15.5%3.8% conv.
phentermine-topiramate3K/yr -22.1%0.9% conv.

All search terms

Top phentermine 37.5 mg without prescription 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 14 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

PhenAprin Advanced Diet Pills for Weight Loss & Energy - Powerful Appetite Suppressant & Thermogenic Fat Burner for Men & Women - Metabolism Booster Food Noise & Cravings Support - 60 Tablets

PhenAprin$39.943.4★14,048 rev

Phent37 (1 Bottle - 60 Speckled Tablets) - Advanced Phenylethylamine HCL Dietary Nutraceutical Premium Small White and Blue Tablets Boost Metabolism Weight Management for Men and Women

Vitamart$29.143.2★323 rev

Phen.emine Elite 37.5 Fast-Acting Formula 60 Tablets

Generic$59.163.6★73 rev

PheneMine 37.5 Priority Blend 60 Capsules

Generic$38.903.6★32 rev

Phenelite Fat Burner for Women - Weight Loss Support and Diet Pills for Helping Reduce Belly Fat - Supplement Made of Raspberry Ketones and Premier Plant Extracts - Appetite Suppressant Vegan

Phenelite$14.653.5★4,914 rev

Newest

by launch date

Performacal Phenylmine XR Weight Management - Energy Appetite & Metabolic Support Formula for Men & Women - 60 Capsules (1)

Performacal$20.102 rev

1mo ago

Appetite Suppressant Weight Loss Pills for Women - New Belly Fat Burner for Women | Metabolism Booster Carb Blocker Burn Fat 24/7 | 3rd Party Tested Extra Strength Weight Loss Diet (60 Pills)

KAKA DR$33.91112 rev

2mo ago

KAKA DR GLP-1 Supplement Weight Loss Pills for Women Appetite Suppressant for Women and Men Metabolism Booster 3rd Party Tested Supplement Made from a Variety of Natural Ingredients - 60 Pills

KAKA DR$32.1188 rev

7mo ago

Triple Burn Weight Loss Pills for Women & Men Fat Burner GLP-1 Support Appetite Suppressant Diet Pills with Green Coffee Extract & Cayenne (60 Capsules)

powercut$19.73742 rev

1y ago

Appetite Suppressant for Weight Loss - Diet Pills for Women & Men Thermogenic Fat Burner w/Garcinia Guarana - Metabolism Booster Ephedra Free Energy Boost Non-GMO Made in USA 30 Capsules

DR VITAMIN SOLUTIONS$13.23463 rev

1y ago

What buyers say about phentermine 37.5 mg without prescription

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

What buyers love

Weight Loss28%

“Great for weight management support”

Quality-Overall10%

“The product is very good and effective”

Energy Level8%

“Gives me energy”

Ease Of Use6%

“easy to read”

Sleep Quality5%

“Sleep like a baby”

Nutritional Content5%

“Its so good for health”

Regulates Digestion3%

“especially because they helped me a lot to reduce bloating”

Side Effects3%

“hasnt caused any side effects”

Ease Of Chewing/Swallowing3%

“isn't hard to swallow”

Stress/Anxiety2%

“Really helped relax me”

What buyers complain about

Functionality-Overall24%

“Not effective”

Weight Loss18%

“Gained weight instead”

Side Effects10%

“Beware of side effects”

Value For Money7%

“not worth it”

Sleep Quality6%

“No Sleep for Me”

Nutritional Content4%

“Did not control appetite”

Acid Regulator/Stomach Ache Relief4%

“Makes me Nauseous & Sick”

Energy Level2%

“I didnt feel like I got any extra energy”

Advertised Vs Actual Product2%

“Not at all comparable to what its supposed to be”

Ingredients-Overall1%

“The bottle seem real cheap I did noticed a strong order like if I was taken a type of medicine or something”

Top return reasons

Functionality-Overall40%

Dosage20%

Comfort-Overall20%

Value For Money20%

Common questions

Is phentermine 37.5 mg without prescription profitable to sell on Amazon United States?: The niche generates $226K/yr across 14 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is -4.3%. Flapen's verdict: Skip it (48/100).
How competitive is the phentermine 37.5 mg without prescription niche?: 11 brands and 28 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 84% of demand.
What do buyers complain about in phentermine 37.5 mg without prescription?: Top complaints mined from reviews: Functionality-Overall, Weight Loss, Side Effects. The return rate is 0.0%.
When does demand for phentermine 37.5 mg without prescription peak?: Demand peaks in Apr–May–Aug; the busiest month runs 2.5× the quietest.
What does it cost to enter the phentermine 37.5 mg without prescription niche?: Listings span $13.23–$59.64; the average listing price is $34.72 (sweet spot $15–$100). The average incumbent carries 5,892 reviews — the moat a new listing must climb.