Diphenhydramine Hydrochloride Suppliers & Bulk Manufacturers
Available Forms: Injection
Available Strengths: 50 mg/mL in 1 mL or 2 mL vials
Reference Brands: Benadryl®
Category: Allergy Medication
Diphenhydramine HCl Injection (50 mg/mL) is a fast-acting antihistamine used for severe allergic reactions, anaphylaxis support, and motion sickness. Available in 1 mL/2 mL vials, marketed as Benadryl® and generics in the US and EU.
Product Description:
Diphenhydramine Hydrochloride Injection is a fast-acting first-generation antihistamine, widely used for acute allergic reactions, anaphylaxis adjunct, and drug-induced extrapyramidal symptoms. Commonly supplied as 50 mg/mL in 1 mL or 2 mL vials, it is administered via IM or slow IV injection. Marketed in the US under brands like Benadryl® Injection, and widely available as generics in both the EU and US. Manufactured in GMP-certified facilities, this injection is ideal for hospital supply, emergency kits, and B2B distribution.
Diphenhydramine Hydrochloride — third party manufacturing & bulk supply
Diphenhydramine Hydrochloride is available through PharmaTradz for wholesale and bulk supply as well as on a third party (contract) manufacturing basis. Buyers sourcing this product generally take one of three routes:
Indicative minimum order quantity
Diphenhydramine Hydrochloride is supplied as Injection — an injectable dosage form, so the indicative MOQ is 50,000 units. Actual MOQ is confirmed by the allocated manufacturer against your pack presentation and destination market. See full supply terms for dossier formats, market availability and shelf life.
Manufacturers of Diphenhydramine Hydrochloride listed on PharmaTradz hold site-level approvals across WHO-GMP, EU-GMP, USFDA, ANVISA and TGA, verified at onboarding.
Request a quote for Diphenhydramine Hydrochloride →Frequently Asked Questions
Diphenhydramine Hydrochloride is used to relieve symptoms of allergy, hay fever, and the common cold, such as runny nose, sneezing, itching, and watery eyes. It is also used to prevent and treat nausea, vomiting, and dizziness caused by motion sickness, and to help with short-term sleep problems.
Diphenhydramine Hydrochloride is made from an ethanolamine derivative that acts as a first-generation antihistamine by blocking histamine H1 receptors in the body.
Common trade names of Diphenhydramine Hydrochloride include Benadryl, Nytol, and Unisom.
Diphenhydramine Hydrochloride is made by Johnson & Johnson (Benadryl), McNeil Consumer Healthcare, and other generic pharmaceutical manufacturers.
The generic name of the product is Diphenhydramine Hydrochloride.
The brand names of Diphenhydramine Hydrochloride are Benadryl, Nytol, and Unisom.
Diphenhydramine Hydrochloride is manufactured by several pharmaceutical companies in the United States, the United Kingdom, and India.
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