Patient info

Nalcrom 100 mg capsules – patient leaflet, side effects, dosage

Updated:
Key facts
Status:
Prescription only (POM)
Medicine strength:
100 mg
Contains active substance:
Similar medicines:

Patient leaflet - Nalcrom 100 mg capsules

What Nalcrom Capsules are and what they are used for

Nalcrom 100mg Capsules (called Nalcrom Capsules in this leaflet) contains a medicine called sodium cromoglicate. This belongs to a group of medicines called anti-allergics.

It works by stopping the release of the natural substances in your body that can cause an allergic reaction. It also lowers your response when you are exposed to substances to which you are allergic.

What Nalcrom Capsules are used for:

  • Nalcrom Capsules are used to treat allergic reactions to certain foods.
  • It is only used if you have had a test to prove that you are allergic to these foods.
  • As part of your treatment, your doctor should advise you to avoid eating certain foods which may cause an allergic reaction.

What you need to know before you take Nalcrom Capsules

Do not take Nalcrom if:

  • You are allergic (hypersensitive) to sodium cromoglicate or any of the other ingredients of Nalcrom Capsules (listed in section 6). Signs of an allergic reaction include: a rash, swallowing or breathing problems, swelling of your lips, face, throat or tongue.

Do not use this medicine if the above applies to you. If you are not sure, talk to your doctor or pharmacist before taking Nalcrom Capsules.

Pregnancy and breast-feeding

Talk to your doctor before taking this medicine if you are pregnant, might become pregnant or think you may be pregnant.

If you are breast-feeding or planning to breast-feed, talk to your doctor or pharmacist before taking this medicine.

How to take Nalcrom Capsules

Always take Nalcrom Capsules exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure.

Taking this medicine

  • Take this medicine by mouth.
  • Take this medicine before a meal.

  • If signs of allergy do not improve within 2-3 weeks, your doctor may double how much you take. Your dose should not be larger than 40 mg per kilogram of your body weight per day.
  • If you feel the effect of your medicine is too weak or too strong, do not change the dose yourself, but ask your doctor.

How much to take

Adults (including the Elderly).

  • Two capsules, four times a day, before meals.
  • When your symptoms improve, your doctor may lower your dose.

Children (aged between 2 and 14 years)

  • One capsule, four times a day, before meals.
  • When your child’s symptoms improve, your doctor may lower the dose.

If you take more Nalcrom than you should

Talk to your doctor or go to hospital straight away. Remember to take any medicine that is left with you so the doctor knows what you have taken. Patient Information Leaflet

(sodium cromoglicate)

Nalcrom 100mg Capsules

®

1

6

4

5

2

3

1

3

Ref: 1478/061223/1/F If you forget to take Nalcrom Capsules

If you forget a dose, take it as soon as you remember it. However, if it is nearly time for the next dose, skip the missed dose. Do not take a double dose to make up for a forgotten dose.

If you stop taking Nalcrom Capsules

Keep taking Nalcrom Capsules unitl your doctor tells you to stop. Do not stop taking Nalcrom Capsules just because you feel better. If you stop, your food allergies may come back or get worse.

If you have any further questions on the use of this product, ask your doctor pr pharmacist.

Possible side effects

Like all medicines, Nalcrom Capsules can cause side effects, although not everybody gets them.

Stop taking Nalcrom Capsules and see a doctor or go to a hospital straight away if:

  • You have an allergic reaction to Nalcrom Capsules. The signs may include: a rash, swallowing or breathing problems, swelling of your lips, face, throat or tongue.

Talk to your doctor or pharmacist if any of the side effects gets serious or lasts longer than a few days, or if you notice any side effects not listed in this leaflet:

  • Skin rashes
  • Pain in your joints
  • Feeling sick (nausea)

Reporting of side effects

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme at: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

By reporting side effects you can help provide more information on the safety of this medicine.

How to store Nalcrom Capsules

  • KEEP OUT OF THE SIGHT AND REACH OF CHILDREN.
  • Do not store above 25ºC.
  • Keep container tightly closed.
  • Store in a dry place.
  • Do not use after the expiry date which is stated on the label and carton. The expiry date refers to the last day of that month.
  • If the capsules become discoloured or show any other signs of deterioration, you should seek the advice of your pharmacist who will tell you what to do.

    • Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.

Contents of the pack and other information

What Nalcrom Capsules contain

The active substance is sodium cromoglicate. Each capsule contains 100 mg of sodium cromoglicate.

The other ingredients are gelatin and black printing ink.

What Nalcrom Capsules look like and contents of the pack

Nalcrom Capsules are hard gelatin capsules with a clear cap and body, marked ‘SODIUM

CROMOGLICATE 100 mg’ in black ink and containing a white powder.

Nalcrom Capsules are available in containers of 100 capsules.

Manufacturer and Licence Holder

Nalcrom Capsules are manufactured by ITC FARMA s.r.l., Via Pontina 5, KM 29, 00040 Pomezia, Rome, Italy and are procured from within the EU and repackaged by the Product Licence Holder: Lexon (UK) Limited, Unit 18, Oxleasow Road, East Moons Moat, Redditch, Worcestershire, B98 0RE.

This leaflet does not contain all the information about your medicine. If you have any questions or are not sure about anything, ask your doctor or pharmacist.

PL 15184/1478

Leaflet revision date: 06/12/23

Nalcrom is a registered trademark of Fisons Limited.

Blind or partially sighted? Is this leaflet hard to see or read? Phone Lexon (UK) Limited, Tel: 01527 505414 to obtain the leaflet in a format suitable for you

4

5

POM

Ref: 1478/061223/1/B 6

About this document

Source: MHRA - Medicines and Healthcare products Regulatory Agency (products.mhra.gov.uk) · Marketing authorisation: PLPI 15184/1478

Last revision stated in the text: 6 December 2023 · MHRA data as of 13 October 2026

Found a mistake? Tell us on the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Facts about Nalcrom 100 mg capsules

Prescription needed? Yes, prescription-only medicine (POM)
Active substance Sodium cromoglicate
Strength 100 mg
Pharmaceutical form Oral capsule
How is it taken Oral
Is it available? Listed as available (NHS Dictionary of Medicines and Devices – not a record of current supplies)
Drug group (ATC)
  1. A Alimentary tract and metabolism drugs
    1. A07 Antidiarrheals, intestinal antiinflammatory/antiinfective agents
      1. A07E Intestinal antiinflammatory agents
        1. A07EB Antiallergic intestinal antiinflammatory drugs, excl. corticosteroids
          1. A07EB01 cromoglicic acid
Marketing authorisation PLPI 15184/1478
Codes BNF 01050400

Sources: the MHRA product information (products.mhra.gov.uk) and the NHS Dictionary of Medicines and Devices (dm+d), release 10.2.0 of 19 October 2026, NHS Business Services Authority. Contains public sector information licensed under the Open Government Licence v3.0.