cephalexin 500 mg

CAPSULEORALAidarex Pharmaceuticals LLCNDC: 33261-020Updated: Mar 2026

Active Ingredient

⚠️ 5 ingredients flagged as common allergens

FD&C Blue No. 1

⚠️ Yes — Dye

Colorant

FD&C Green No. 3

⚠️ Yes — Dye

Colorant

FD&C Yellow No. 6

⚠️ Yes — Dye

Colorant

Gelatin

⚠️ Yes — Animal

Capsule Shell

Sodium Lauryl Sulfate

⚠️ Yes — Surfactant

Wetting Agent

D&C Yellow No. 10

Colorant

Magnesium Stearate

Lubricant

Titanium Dioxide

Colorant/Opacifier

Ingredient	Purpose	Common Allergen?	Description
FD&C Blue No. 1	Colorant	⚠️ Yes — Dye	A synthetic blue dye. Less commonly allergenic than other dyes but reactions are documented.
FD&C Green No. 3	Colorant	⚠️ Yes — Dye	A synthetic green dye (Fast Green FCF) used in medications. May cause reactions in dye-sensitive individuals.
FD&C Yellow No. 6	Colorant	⚠️ Yes — Dye	An artificial colorant (also called Sunset Yellow). May cause reactions in people sensitive to artificial dyes.
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.
Sodium Lauryl Sulfate	Wetting Agent	⚠️ Yes — Surfactant	A surfactant used to improve drug dissolution. Can cause skin irritation in some individuals.
D&C Yellow No. 10	Colorant	No	A synthetic yellow dye (quinoline yellow) used in medications and cosmetics. May cause reactions in individuals with dye sensitivities.
Magnesium Stearate	Lubricant	No	A lubricant that prevents ingredients from sticking to manufacturing equipment.
Titanium Dioxide	Colorant/Opacifier	No	A white pigment used for coating opacity. Under regulatory review in some countries.

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

2 ingredients may contain mammalian-derived components:

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