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Diphenhydramine Hydrochloride Prices, Demand and Supply Overview
Diphenhydramine Hydrochloride prices in Germany, the highest-cost reporting region, rose 6.0% in H1 2026, climbing from USD 40.942/KG in Q1 to USD 43.399/KG in Q2 as pharmaceutical API demand recovery and benzhydryl feedstock cost firming drove consistent procurement through the season. Globally, the average rose from USD 30.900/KG in Q1 to USD 32.754/KG in Q2, a 6.0% gain that extended the Q1 2026 recovery from the Q4 2025 seasonal dip. For H2 2026, a global average of USD 32.9-37.2/KG is expected, with continued support from antihistamine and OTC sleep aid formulation demand recovery and API feedstock cost firming across Asian producing markets.
Diphenhydramine Hydrochloride is the hydrochloride salt of the first-generation ethanolamine antihistamine diphenhydramine, produced by reacting benzhydryl chloride or diphenylmethanol with 2-dimethylaminoethanol under controlled conditions and converting the base product to the hydrochloride salt by hydrogen chloride gas treatment or hydrochloric acid addition, yielding a white crystalline powder of high water solubility meeting USP, EP, and equivalent pharmacopoeial purity specifications. Commercial API production operates at generic pharmaceutical scale in India and China supplying the global formulation industry, with tight specification control on residual solvent, heavy metal, and related substance impurity limits governing production batch release. The largest pull comes from OTC antihistamine formulation for allergy, hay fever, common cold, and urticaria symptom relief in tablet, capsule, liquid, and topical dosage forms. OTC sleep aid formulation for mild insomnia, antiemetic use for motion sickness, and topical anaesthetic and itch relief cream applications add further demand. Benzhydryl feedstock and 2-dimethylaminoethanol costs, generic pharmaceutical API demand, and OTC consumption trends all feed into the price.
Diphenhydramine Hydrochloride Price Forecast for 2026
The balance of supply and demand for Diphenhydramine Hydrochloride through H2 2026 leans moderately firm. Consistent OTC antihistamine and sleep aid formulation demand maintained procurement. Benzhydryl and dimethylaminoethanol feedstock cost firming supported the API production floor.
The main upside risk is a benzhydryl or DMAE feedstock cost spike raising API production economics above the forecast range. The main downside risk is weaker-than-expected OTC antihistamine or sleep aid consumption, which would soften API procurement below the forecast.
| Region | 2026 Price Range (USD/KG) | Outlook |
| Global Average | 32.9 - 37.2 | Antihistamine demand and API feedstock firming |
| United States | 36.1 - 40.8 | OTC demand holds firm API procurement |
| China | 25.0 - 28.2 | Large capacity keeps China most affordable |
| Germany | 43.7 - 49.4 | Energy and feedstock costs maintain premium |
| India | 33.5 - 37.9 | Generic API supply supports firm middle |
For the Quarter Ending June 2026
Diphenhydramine Hydrochloride Prices Q2 2026:
- United States: USD 35.866/KG
- China: USD 24.828/KG
- Germany: USD 43.399/KG
- India: USD 33.344/KG
Diphenhydramine Hydrochloride Prices in the United States
US Diphenhydramine Hydrochloride prices averaged USD 35.866/KG in Q2 2026, up 6.0% from USD 33.835/KG in Q1 2026. Recovering OTC antihistamine formulation procurement and firmer benzhydryl feedstock costs drove the Q2 gain.
Why did the price of Diphenhydramine Hydrochloride change in Q2 2026 in the United States?
Recovering OTC allergy and sleep aid formulation procurement lifted buying. Firmer benzhydryl feedstock costs raised the API production floor. Seasonal hay fever demand added further support near USD 35.866/KG.
Diphenhydramine Hydrochloride Prices in China
Chinese Diphenhydramine Hydrochloride prices averaged USD 24.828/KG in Q2 2026, up 6.0% from USD 23.422/KG in Q1 2026. Recovering export API procurement and firmer benzhydryl feedstock costs drove the seasonal Q2 recovery.
Why did the price of Diphenhydramine Hydrochloride change in Q2 2026 in China?
Recovering generic API export procurement lifted buying. Firmer benzhydryl feedstock costs raised the production floor. Large Chinese capacity kept the market most affordable near USD 24.828/KG.
Diphenhydramine Hydrochloride Prices in Germany
German Diphenhydramine Hydrochloride prices averaged USD 43.399/KG in Q2 2026, up 6.0% from USD 40.942/KG in Q1 2026, the highest among tracked markets. Energy-elevated production economics and recovering European pharmaceutical formulation procurement drove the Q2 firming.
Why did the price of Diphenhydramine Hydrochloride change in Q2 2026 in Germany?
Recovering European OTC antihistamine formulation procurement maintained buying. Firmer energy and benzhydryl feedstock costs sustained the elevated production floor near USD 43.399/KG.
Diphenhydramine Hydrochloride Prices in India
Indian Diphenhydramine Hydrochloride prices averaged USD 33.344/KG in Q2 2026, up 6.0% from USD 31.456/KG in Q1 2026. Recovering generic API export procurement and firmer benzhydryl feedstock import costs drove the Q2 gain.
Why did the price of Diphenhydramine Hydrochloride change in Q2 2026 in India?
Recovering generic pharmaceutical API export procurement lifted buying. Firmer benzhydryl import costs raised the production floor. Seasonal allergy formulation demand added support near USD 33.344/KG.
For the Quarter Ending March 2026
Diphenhydramine Hydrochloride Prices Q1 2026:
- United States: USD 33.835/KG
- China: USD 23.422/KG
- Germany: USD 40.942/KG
- India: USD 31.456/KG
Diphenhydramine Hydrochloride Prices in the United States
US prices averaged USD 33.835/KG in Q1 2026, up about 2.0% from Q4 2025. Recovering OTC formulation procurement and firmer benzhydryl feedstock costs reversed the Q4 2025 dip before the Q2 seasonal demand surge.
Why did the price of Diphenhydramine Hydrochloride change in Q1 2026 in the United States?
Recovering OTC antihistamine and sleep aid formulation procurement lifted buying. Firmer benzhydryl feedstock costs raised the floor. The market recovered to USD 33.835/KG from the Q4 2025 dip.
Diphenhydramine Hydrochloride Prices in China
Chinese prices averaged USD 23.422/KG in Q1 2026, up about 2.0% from Q4 2025. Recovering generic API export procurement and firming benzhydryl feedstock costs reversed the Q4 dip before the Q2 gain.
Why did the price of Diphenhydramine Hydrochloride change in Q1 2026 in China?
Post-holiday generic API export procurement recovered. Firmer benzhydryl feedstock costs raised the floor. The market recovered to USD 23.422/KG from Q4 dip.
Diphenhydramine Hydrochloride Prices in Germany
German prices averaged USD 40.942/KG in Q1 2026, up about 2.0% from Q4 2025. Recovering European OTC and prescription pharmaceutical procurement and firmer energy costs reversed the Q4 seasonal dip.
Why did the price of Diphenhydramine Hydrochloride change in Q1 2026 in Germany?
Recovering European pharmaceutical formulation procurement maintained buying. Firmer energy and benzhydryl feedstock costs raised the floor. The market recovered to USD 40.942/KG from the Q4 2025 dip.
Diphenhydramine Hydrochloride Prices in India
Indian prices averaged USD 31.456/KG in Q1 2026, up about 2.0% from Q4 2025. Recovering generic API export procurement and firmer import feedstock costs reversed the Q4 seasonal softening.
Why did the price of Diphenhydramine Hydrochloride change in Q1 2026 in India?
Recovering generic API export procurement lifted buying. Firmer benzhydryl import costs raised the production floor. The market recovered to USD 31.456/KG from the Q4 2025 seasonal dip.
Quarterly Diphenhydramine Hydrochloride Price Trends
Global Diphenhydramine Hydrochloride prices rose in Q3 2025, dipped in Q4 2025 on seasonal moderation, then recovered through Q1 and Q2 2026. The average rose from USD 30.00/KG in Q2 2025 to USD 30.60/KG in Q3, eased to USD 30.294/KG in Q4, then firmed to USD 30.900/KG in Q1 2026 and USD 32.754/KG in Q2 2026, a net gain of about 9.2% over the window. OTC antihistamine demand seasonality and benzhydryl feedstock cost cycles drove the overall price pattern.
| Quarter | Price (USD/KG) | QoQ Change | Direction |
| Q2 2026 | 32.754 | +6.0% | ↑ Rising |
| Q1 2026 | 30.900 | +2.0% | ↑ Rising |
| Q4 2025 | 30.294 | -1.0% | ↓ Falling |
| Q3 2025 | 30.600 | +2.0% | ↑ Rising |
| Q2 2025 | 30.000 | - | - Stable |
| Q3 2026 | In Progress | - | - In Progress |
What was Diphenhydramine Hydrochloride Price in 2025?
Diphenhydramine Hydrochloride prices firmed modestly through 2025 with a seasonal Q4 dip. The global average opened near USD 29.41/KG in Q1 2025 and rose to USD 30.294/KG by Q4, a full-year gain of about 3.0%. OTC antihistamine demand continuity and benzhydryl feedstock cost cycles governed the price movement.
Diphenhydramine Hydrochloride Prices in the United States in 2025
US prices firmed from about USD 32.204/KG in Q1 2025 to USD 33.172/KG by Q4, a gain of about 3.0%. OTC antihistamine and sleep aid procurement continuity and feedstock cost cycles drove the year-long trend.
Diphenhydramine Hydrochloride Prices in China in 2025
Chinese prices firmed from roughly USD 22.273/KG in Q1 2025 to USD 22.943/KG by Q4, a gain of about 3.0%. Generic API export demand and benzhydryl feedstock cost cycles governed the modest year-long movement.
Diphenhydramine Hydrochloride Prices in Germany in 2025
German prices firmed from about USD 38.969/KG in Q1 2025 to USD 40.140/KG by Q4, a gain of about 3.0%. Energy-elevated production costs and European OTC pharmaceutical demand drove the year-long firming.
Diphenhydramine Hydrochloride Prices in India in 2025
Indian prices firmed from roughly USD 30.020/KG in Q1 2025 to USD 30.920/KG by Q4, a gain of about 3.0%. Generic API export procurement continuity and feedstock import cost cycles governed the year-long trend.
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Expert Market Research: Your Source for Real-Time Diphenhydramine Hydrochloride Price Intelligence
Expert Market Research tracks Diphenhydramine Hydrochloride prices continuously across every major producing and consuming region. The team traces causation through benzhydryl and DMAE feedstock economics, OTC antihistamine and sleep aid formulation demand cycles, and generic pharmaceutical API supply dynamics. Contact Expert Market Research today for Diphenhydramine Hydrochloride pricing data, bespoke market analysis, and strategic procurement advisory.
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Key Questions Answered in the Report
OTC antihistamine formulation takes the largest share globally. Diphenhydramine HCl is the active ingredient in allergy, hay fever, common cold, and urticaria relief products in tablet, capsule, liquid, and topical forms. OTC sleep aid formulation for mild insomnia, antiemetic for motion sickness, and topical anaesthetic and itch relief applications also consume significant volumes.
The Q2 2026 average was USD 35.866/KG in the United States, USD 24.828/KG in China, USD 43.399/KG in Germany, and USD 33.344/KG in India. Germany carries the highest cost due to energy and pharmaceutical production input premiums.
The global average rose from USD 30.900/KG in Q1 to USD 32.754/KG in Q2, a gain of about 6.0%. Recovering OTC antihistamine formulation procurement and firmer benzhydryl feedstock costs drove the Q2 firming from the Q1 recovery level.
Seasonal OTC pharmaceutical procurement moderation eased buying urgency after the Q3 2025 peak. Buyers drew down contracted API inventory ahead of Q1 2026 restocking. The market eased to USD 30.294/KG before the Q1 2026 recovery.
The global average is expected in the USD 32.9 to 37.2/KG range for H2 2026, with support from consistent OTC antihistamine and sleep aid formulation demand, generic pharmaceutical procurement, and API feedstock cost firming across Asian producing markets.
Germany holds the highest cost on energy and pharmaceutical production input premiums. The United States and India hold a firm middle on API supply economics, and China prices lowest on large generic pharmaceutical production capacity.
This report is updated monthly. For real-time pricing intelligence, contact the Expert Market Research team directly.
Prices respond mainly to benzhydryl chloride and 2-dimethylaminoethanol feedstock costs, OTC antihistamine and sleep aid formulation demand cycles, generic pharmaceutical API procurement seasonality, and pharmacopoeial purity specification compliance costs.
India and China hold the largest combined generic API production capacity, supplying the global formulation industry. Any benzhydryl or DMAE feedstock cost shift or OTC demand change ripples across all regional markets.
Buyers can use quarterly trends and forecasts to time API contracts around OTC seasonal procurement cycles, monitor benzhydryl feedstock cost as the primary production floor signal, and build forward coverage ahead of Q2 hay fever season and Q4 cold and flu season demand peaks.
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