Find out if it's safe while breastfeeding.

Scan a medicine, a cream or a grocery item and Lacty answers in seconds: whether it's compatible with breastfeeding, why, and what to use instead. With your baby's age in mind.

In preparation · iPhone and Android

Built on data from official sources

  • LactMed · NIH
  • FDA
  • AEMPS
  • Health Canada
  • NHS dm+d
  • Open Food Facts
  • Open Beauty Facts

From the box to breastfeeding information.

1

Scan

Point at the barcode of a medicine, a cream, a supplement or a grocery item. If it isn't listed, Lacty reads the name off the box.

57
ActromadolUse with care
Transfer into milkLow

2

Understand

You get a score from 0 to 100 and a clear answer: compatible, use with care, best avoided, or not enough data. With the reason why.

57
94

3

Choose better

When an alternative is listed in your country, you can discuss it with a professional. A higher score does not decide which treatment you need.

Every box, explained.

General ingredient examples beside Spanish boxes; these do not decide which treatment you need.

Nurofen 400 mg

Nurofen

400 mg
94
Compatible

Ibuprofen passes into milk in tiny amounts and is a preferred option while breastfeeding.

Sources: LactMed 1 2

  • Transfer into milkVery low
  • Time in the bodyShort
  • Breastfeeding studiesMany
Gelocatil 650 mg

Gelocatil

650 mg
88
Compatible

It is a good choice for pain and fever during breastfeeding; adverse effects appear rare.

Sources: LactMed 1 2

  • Transfer into milkLow
  • Used in infantsYes
  • Breastfeeding studiesMany
Actromadol 660 mg

Actromadol

660 mg
57
Use with care

Milk levels appear low, but LactMed prefers another option for newborn or preterm infants.

Sources: LactMed 1 2

  • Transfer into milkLow
  • Time in the bodyLong
  • Used in infantsNo
Pharmafren 200 mg / 30 mg

Pharmafren

200 mg / 30 mg
38
Best avoided

The Spanish leaflet contraindicates it; LactMed advises against use with low supply or unestablished lactation.

Sources: LactMed 1 2

  • Effect on milk supplyMay reduce it
  • Transfer into milkUnknown
  • Breastfeeding studiesSeveral

Public catalogue · AI summaries not reviewed by a pharmacist

A mother holds her sleeping baby wrapped in a pink blanket.

A clear answer, with the why.

At 3 a.m. you don't want to read a leaflet or ask five group chats. You want to know if you can take it. Lacty tells you, with your baby's age in mind, and explains why.

Everything you need while breastfeeding.

We tell you if something changes

When your baby grows or an entry is reviewed, we let you know. Only about what you take or keep. Never ads.

A score from 0 to 100

Four possible answers, always with a symbol and a word, never colour alone.

Compatible75–98
Use with care45–72
Best avoided12–38
Not enough data—

Made for your baby's age

A newborn isn't a six-month-old. Age notices appear when supported by the sources.

Lucía2 months

01 mo6 mo1 yr

A better alternative

Check alternatives when available in your country catalogue.

Actromadol57
Better alternative
Nurofen94

Your medicine cabinet

What you take and keep, with the latest information downloaded.

NurofenTaking now · Day 3 of 6
94
GelocatilSaved
88

Ask Lacty AI

Tell it what's going on and it answers from Lacty's catalogue and its sources, even at 3 a.m.

What does Lacty say about paracetamol while breastfeeding?
Lacty AIIt is a good choice for pain and fever during breastfeeding; adverse effects appear rare.

Works offline

Your country's medicines live on your phone. Scan with no signal and we keep the code and answer when you're back.

Offline1 scan waiting for an answer

Private by design

Online requests send only the information needed.

  • No account or sign-up
  • No ads
  • Profile on your phone

Creams, coffee and groceries, too.

Breastfeeding isn't only about pills. Lacty checks the ingredients worth watching in skincare, supplements and food, as well as medicines. It does not assess every ingredient or replace an individual assessment.

Medicine
Medicine
Serums & creams
Serums & creams
Makeup
Makeup
Sunscreen
Sunscreen
Coffee & tea
Coffee & tea
Vitamins
Vitamins
Wine & beer
Wine & beer

How we calculate the score.

The score is Lacty’s own five-factor index, not a safety percentage or a LactMed rating. The score is kept within the displayed category, so a 90 is never “best avoided”. A product scores as its most delicate ingredient.

How the 100 points are split

Transfer into milk30
Breastfeeding studies25
Time in the body15
Used in infants15
Effect on milk supply15

What each score means

Compatible75–98
Use with care45–72
Best avoided12–38
Not enough data—

Breastfeeding medication: example searches.

Is ibuprofen compatible with breastfeeding?

94
Compatible

Ibuprofen passes into milk in tiny amounts and is a preferred option while breastfeeding.

Is acetaminophen compatible with breastfeeding?

88
Compatible

It is a good choice for pain and fever during breastfeeding; adverse effects appear rare.

Is amoxicillin compatible with breastfeeding?

98
Compatible

Amoxicillin passes into milk in very small amounts, but some infants may develop diarrhea or rash.

Is naproxen compatible with breastfeeding?

57
Use with care

Milk levels appear low, but LactMed prefers another option for newborn or preterm infants.

Is cetirizine compatible with breastfeeding?

58
Use with care

LactMed considers small, occasional use acceptable; more or longer use may affect the baby or milk supply.

Is pseudoephedrine compatible with breastfeeding?

38
Best avoided

The Spanish leaflet contraindicates it; LactMed advises against use with low supply or unestablished lactation.

Public catalogue · AI summaries not reviewed by a pharmacist · Local export: 2026-10-31

Every answer, with its source.

We start from cited scientific sources and each country's official registries. Each entry shows its sources and labels AI summaries not yet reviewed by a pharmacist.

LactMed · NIH

The drugs and lactation database of the U.S. National Library of Medicine.

Official registries

FDA, AEMPS and each country's regulator: names, packs and leaflets.

Open Food Facts & Open Beauty Facts

The ingredients of groceries and cosmetics.

AI, always labelled

If an answer is an AI-prepared summary not yet reviewed by a pharmacist, the page says so.

Lacty informs; it doesn't replace your doctor, midwife or pharmacist. Always talk to a professional before starting, changing or stopping a treatment.

Frequently asked questions.

Another question? Write to us at hi@eiraslabs.com

Is it free?

Lacty is free to download and you get free checks every day. The full Lacty plan gives you unlimited checks, the reasons behind each answer, alternatives and your medicine cabinet.

Does it replace my doctor or pharmacist?

No. Lacty is reference information with its sources, not personal medical advice, and it doesn't give doses. Always talk to a professional.

Where do the answers come from?

From LactMed (U.S. National Library of Medicine), each country's official medicine registry, and Open Food Facts and Open Beauty Facts. Some answers are AI-prepared summaries of those sources; we always say so on the page.

Does it consider my baby's age?

When sources describe age differences, we show the relevant notices. You can enable notifications about saved items.

Does it work for skincare, supplements and food?

Yes. Besides medicines, Lacty checks cosmetics, supplements and food, and flags the ingredients worth watching while breastfeeding.

What happens to my data?

Your profile and history are stored on your phone. Lookups, Lacty AI and information you submit use online services, as explained in the privacy policy.

Which countries does it cover?

The United States, Canada, the United Kingdom, Spain, France, Italy, Mexico, Argentina, Chile, Colombia, Ecuador, the Dominican Republic and Brazil.

Know before you take it.

Lacty is coming soon to iPhone and Android.

In preparation · iPhone and Android