LGG Probiotic (L. rhamnosus GG)

LGG is the probiotic strain Lactobacillus rhamnosus GG. Here is how to find genuine LGG products.

Updated Oct 17, 2026. Edited by: Ilyass Ben Hakim.

Where to buy

Pharmacies and supplement shops often stock LGG capsules. Search the full strain name, since LGG alone brings mixed results. Prefer the brand store or an authorized seller on marketplaces.

Professional insight

Pharmacy buyers read the strain code first. Then they check CFU at expiry and storage.

Rhamnosus without the letters GG is a different strain.
In blends, GG should appear beside ATCC 53103.
Infant drops are judged on seal quality and fridge needs.
Dosing and timing questions go to a pharmacist.

Check the label

Strain is named as rhamnosus GG, ideally with ATCC 53103.
CFU count is stated at expiry, not at manufacture.
Expiry or best-by date is clearly printed.
Storage line says room temperature or refrigerate.
Allergen line mentions milk if present.
Age range matches the person who will take it.
Brand name and contact details are printed on the box.
Batch or lot number is visible.

0 of 8 checked

LGG strain facts

Strain: Lacticaseibacillus rhamnosus GG; Older labels say Lactobacillus rhamnosus GG.
Year isolated: 1983; Isolated by Sherwood Gorbach and Barry Goldin.
Culture code: ATCC 53103; Look for this number on the label.

The letters GG come from the surnames Gorbach and Goldin. The strain was first patented as L. acidophilus GG. It was later moved to the species rhamnosus.

Valio of Finland held the LGG trademark for years. Chr. Hansen bought the LGG business from Valio in 2016. Many brands now license the strain for their own products.

Before you buy

Decide whether you want LGG alone or LGG in a blend.
Check who the product is for: adults, kids or babies.
Pick a form you will actually take, such as capsules or drops.
Confirm the label names strain GG, not just L. rhamnosus.
Note whether the product needs a fridge after opening.
Check for a milk warning if you avoid dairy.

Types

Common LGG product forms
Form	Usually sold for	What to check
Vegetarian capsules	Adults	Strain code and CFU at expiry
Chewable tablets	Kids and adults	Sugar content and age range
Powder packets	Kids	Mix only with cool food or drink
Liquid drops	Babies	Seal, expiry and storage after opening
Fermented dairy	Shoppers wanting food sources	Use-by date and cold chain

Storage

Keep LGG capsules cool, dry and out of direct sun.
Refrigerate only if the label asks for it.
Keep the desiccant pack inside the bottle.
Close the lid tightly to keep humidity out.
Do not leave packs in a hot car after shopping.

Red flags

Listing says LGG but the label photo shows another strain.
No expiry date in photos or description.
Broken or missing seal on baby drops.
Seller cannot name the brand or batch.
Product claims to cure or treat a disease.
Price far below every other seller of the same pack.

Ways to save

LGG cost per capsule

Calculator

Enter the pack price and count from the label.

Pack price

Capsules in pack

Cost per capsule$0.67

Compare cost per capsule, not pack price.
Buy larger packs only if you finish them before expiry.
Check subscribe options from the brand or marketplace.

Common questions

Is LGG the same as any L. rhamnosus product?: No. GG is one specific strain. Other rhamnosus strains carry different codes.
Does LGG need refrigeration?: It depends on the product. Many capsules are shelf stable. Follow the storage line on the box.
Can I give LGG to a baby?: Ask a doctor or pharmacist first. Use only products labeled for infants.
Can I take LGG with antibiotics?: Ask your pharmacist. Some labels give timing advice, so read it first.