What is Lactose used for in medicines?

A sugar from dairy used as a tablet filler. Provides bulk and improves tablet compressibility.

What are common sources of Lactose?

Common sources include: Cow's milk. Manufacturers often do not disclose which source is used.

Is a lactose-free formulation available?

Ask your pharmacist or prescriber. RxHalal lists this because Lactose is halal in our cited database.

Is Lactose halal?

Lactose is classified halal for halal use with High confidence. A sugar from dairy used as a tablet filler. Dairy-derived; generally permissible. May matter for lactose intolerance or strict vegan diets.

Excipient (filler) · Confidence: High

Also known as: milk sugar

Looks Halal Ask pharmacist

Find medicines containing Lactose

Related excipients

Ranked by co-formulation in our medicine catalog, shared concern codes, and compare guides.

Magnesium Stearate Uncertain

Excipient (lubricant)

Used together in 42 medicines in our catalog

Open →Compare

Microcrystalline Cellulose Looks Halal

Excipient (filler)

Used together in 30 medicines in our catalog

Open →Compare

Titanium Dioxide Looks Halal

Colorant

Used together in 29 medicines in our catalog

Open →Compare

Hypromellose (HPMC) Looks Halal

Capsule material / coating

Used together in 22 medicines in our catalog

Open →Compare

Iron Oxide (colorant) Looks Halal

Colorant

Used together in 22 medicines in our catalog

Open →Compare

Povidone (PVP) Looks Halal

Excipient (binder)

Used together in 15 medicines in our catalog

Open →Compare

Starch (Maize/Potato) Looks Halal

Excipient (filler/binder)

Used together in 14 medicines in our catalog

Open →Compare

Talc Looks Halal

Excipient (glidant)

Used together in 9 medicines in our catalog

Open →Compare

What it is

A sugar from dairy used as a tablet filler.

Source:FDA Inactive Ingredient Database (IIG)MedlinePlus — lactose intolerance

Why it's here

Provides bulk and improves tablet compressibility.

See:FDA Inactive Ingredient Database (IIG)MedlinePlus — lactose intolerance

Why it may matter

Dairy-derived; generally permissible. May matter for lactose intolerance or strict vegan diets.

Source:FDA Inactive Ingredient Database (IIG)MedlinePlus — lactose intolerance

Common sources

Cow's milk

Questions to ask

Is a lactose-free formulation available?

Allergen tags

This excipient is sometimes flagged for the following allergen categories. Separate from halal status.

Milk — Lactose

Reason codes

dairyDerived

Evidence & citations2

Audit

Common questions

Is Lactose halal?: RxHalal currently classifies Lactose as HALAL (High confidence). Dairy-derived; generally permissible. May matter for lactose intolerance or strict vegan diets. This is information only — not a fatwa or medical advice.
What is Lactose used for in medicines?: A sugar from dairy used as a tablet filler. Provides bulk and improves tablet compressibility.
What are common sources of Lactose?: Common sources include: Cow's milk. Manufacturers often do not disclose which source is used.
Is a lactose-free formulation available?: Ask your pharmacist or prescriber. RxHalal lists this because Lactose is halal in our cited database.

Medicines using this excipient

49 total0 halal48 uncertain1 concern

See all 49 medicines →

Seen most often in these conditions

Where this excipient turns up across RxHalal's tracked treatment categories.

Showing top 5 of 17 matched conditions.