Is period medicine profitable to sell on Amazon United States?

The niche generates $514K/yr across 7 tracked products. 90-day search growth is -0.4%. Flapen's verdict: Skip it (41/100).

How competitive is the period medicine niche?

3 brands and 51 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in period medicine?

Top complaints mined from reviews: Functionality-Overall, Heating, Size-Overall. The return rate is 0.0%.

When does demand for period medicine peak?

Demand peaks in Jan–Jul–Aug–Sep; the busiest month runs 3.1× the quietest.

What does it cost to enter the period medicine niche?

Listings span $5.62–$22.58; the average listing price is $11.91 (sweet spot $15–$100). The average incumbent carries 5,141 reviews — the moat a new listing must climb.

period medicine

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Conversion

Incredible15.9%

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

Market size

Good$514K

$514K/yr · 271K searches

Avg price

Okay$11.91

avg listing price — sweet spot $15–$100

Price range

Okay$5.62–$22.58

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

Growth

Bad-0.4%

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

Review moat

Bad5,141

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad92%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, period medicine is a $514K/yr Amazon United States market (271K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Jul–Aug–Sep. Verdict: Skip it — 41/100.

Data updated Jul 11, 2026 · scored weekly · How we score niches

period medicine market data

Units sold / yr: 40K–50K; avg 5,000–6,000/product
Revenue / yr: $476K–$596K; units × avg price
Conversion rate: 15.9%
Avg BSR: #99
Page quality: 0%
Prime: 100%
Sponsored: 86%
Out of stock: 0.0%
Avg brand age: 64 months
Avg seller age: 144 days

Competition & brand share

The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.

Brands

3 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

92%

Top 20: 100%

Open market

Pamprin86%
Midol9%
HealthA2Z5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -0.4% search growth over the last 90 days.

Peak months: Jan, Jul, Aug, Sep · busiest ÷ quietest = 3.1×

Open Trend

Top period medicine search terms

pamprin140K/yr +0.3%17.1% conv.
pamprin maximum strength51K/yr +1.8%16.5% conv.
pamprin maximum strength multi-symptom menstrual relief tablets15K/yr +15.4%15.3% conv.
period medicine9K/yr +15.9%5.9% conv.
period pills10K/yr +9.0%4.5% conv.
pamprin multi symptom8K/yr +4.2%15.8% conv.
dorival pastillas dolor menstrual8K/yr -15.6%0.6% conv.
menstrual pain relief pills6K/yr -12.6%4.8% conv.
pamperin4K/yr +9.8%18.2% conv.
menstrual relief pills5K/yr -18.8%4.6% conv.

All search terms

Top period medicine 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 7 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Pamprin Multi-Symptom Formula with Acetaminophen Menstrual Period Symptoms Relief including Cramps Pain Bloating and Irritability 40 Caplets

Pamprin$6.994.7★10,286 rev

Pamprin Maximum Strength Max Pain and Energy Formula Menstrual Period Symptoms Relief for Cramps Bloating and Fatigue 24 Caplets

Pamprin$5.624.8★4,135 rev

Midol Complete Menstrual Pain Relief Caplets 40 Count - Provides Cramp Headache and Bloating Relief

Midol$8.254.8★19,404 rev

Pamprin Maximum Strength Multi-Symptom Menstrual Relief Tablets 40-Count Boxes (Pack of 3)

Pamprin$22.584.8★691 rev

Pamprin Maximum Strength Formula 24 Caplets (Pack of 3)

Pamprin$19.474.8★439 rev

Newest

by launch date

Pamprin Heat Relief Menstrual Patches for Portable Menstrual Pain Relief of Cramps and Backaches 3 Count

Pamprin$9.53132 rev

1y ago

HealthA2Z Menstrual Complete Pain Relief Tablets | Relieves Cramps Bloating Fatigue Backache & Headache (120 Counts)

HealthA2Z$10.94900 rev

1y ago

Pamprin Maximum Strength Max Pain and Energy Formula Menstrual Period Symptoms Relief for Cramps Bloating and Fatigue 24 Caplets

Pamprin$5.624,135 rev

12y ago

Pamprin Maximum Strength Formula 24 Caplets (Pack of 3)

Pamprin$19.47439 rev

12y ago

Pamprin Maximum Strength Multi-Symptom Menstrual Relief Tablets 40-Count Boxes (Pack of 3)

Pamprin$22.58691 rev

17y ago

What buyers say about period medicine

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

What buyers love

Menstrual Issues15%

“They do relieve menstrual pain”

Efficiency14%

“Works great and does so much more”

Muscle Pain Relief14%

“relaxes my muscles through that time of the month”

Value For Money10%

“Best price”

Quality-Overall8%

“no complaints so far”

Ease Of Use4%

“Pretty handy and useful I would recommend”

Sleep Quality4%

“If you can remember to take it before you go to bed then your symptoms will be substantially lessened”

Side Effects2%

“I appreciate that it's a complete formula addressing multiple symptoms rather than just one”

Joint Pain2%

“These also helped me with my lower back pain”

Caffeine Content2%

“Love the caffeine additive”

What buyers complain about

Functionality-Overall16%

“It doesnt help”

Heating11%

“Does not heat up”

Size-Overall11%

“The pill is a bit big”

Side Effects10%

“It gave me brain fog, exhaustion, sleepiness, low mood, I couldn't function normally, symptoms that I chalked up to my monthly period even though I didn't have them previously”

Muscle Pain Relief10%

“Doesnt really seem to help with cramps”

Value For Money6%

“Just different prices”

Regulates Digestion3%

“be warned—it also causes some pretty bad constipation which leads to pain of another kind”

Dosage3%

“I took 2 pills for over 1.5 not even a relief”

Pain Relief-Overall3%

“It helps, might not be 25 hours relief”

Quality-Overall2%

“Garbage”

Top return reasons

Size-Overall50%

Muscle Pain Relief25%

Ingredients-Overall25%

Common questions

Is period medicine profitable to sell on Amazon United States?: The niche generates $514K/yr across 7 tracked products. 90-day search growth is -0.4%. Flapen's verdict: Skip it (41/100).
How competitive is the period medicine niche?: 3 brands and 51 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in period medicine?: Top complaints mined from reviews: Functionality-Overall, Heating, Size-Overall. The return rate is 0.0%.
When does demand for period medicine peak?: Demand peaks in Jan–Jul–Aug–Sep; the busiest month runs 3.1× the quietest.
What does it cost to enter the period medicine niche?: Listings span $5.62–$22.58; the average listing price is $11.91 (sweet spot $15–$100). The average incumbent carries 5,141 reviews — the moat a new listing must climb.