The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
The main ingredient in that fast-acting antihistamine is diphenhydramine hydrochloride (DPH). It's the active ingredient in Benadryl, an
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