Diphenhydramine is a pharmaceutical drug used to manage allergy symptoms such as runny nose, hives, and nasal congestion. It acts by inhibiting histamine receptors to reduce allergic responses. It is available in tablets, capsules, syrups, and injectable forms.
The According to The Insight Partners, Global Diphenhydramine Market Size was valued at US$ 1.03 billion in 2025 and is projected to...
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