Diphenhydramine HCl 25 mg

CAPSULEORALAkron Pharma Inc.NDC: 71399-8028Updated: Mar 2026

Active Ingredient

⚠️ 1 ingredient flagged as common allergen

Gelatin

⚠️ Yes — Animal

Capsule Shell

Derived from animal collagen. Used in capsule shells. Not suitable for vegetarians/vegans or those with specific animal protein sensitivities.

Croscarmellose Sodium

Disintegrant

Hypromellose

Coating

Magnesium Stearate

Lubricant

Microcrystalline Cellulose

Filler/Binder

Silicon Dioxide

Glidant

Sodium Propylparaben

Ingredient	Purpose	Common Allergen?	Description
Gelatin	Capsule Shell	⚠️ Yes — Animal	Derived from animal collagen. Used in capsule shells. Not suitable for vegetarians/vegans or those with specific animal protein sensitivities.
Croscarmellose Sodium	Disintegrant	No	A chemically modified cellulose derivative that helps tablets dissolve quickly.
Hypromellose	Coating	No	A semisynthetic polymer used for tablet coating. Derived from cellulose.
Magnesium Stearate	Lubricant	No	A lubricant that prevents ingredients from sticking to manufacturing equipment.
Microcrystalline Cellulose	Filler/Binder	No	Refined wood pulp used as a filler and binder. Generally inert and well-tolerated.
Silicon Dioxide	Glidant	No	A mineral (silica) used to improve powder flow during tablet manufacturing. Also called colloidal silicon dioxide.
Sodium Propylparaben	—	No	—

This medication contains ingredients flagged in the following groups. Patients with these sensitivities should consult their prescriber.

2 ingredients may contain mammalian-derived components:

Gelatin(Yes — Mammalian-derived – alpha-gal risk (verify processing/source).)
Magnesium Stearate(Possible — Stearates can be plant- or animal-derived (verify source).)