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Common questions about sodium cromoglicate capsules - Brand name: Nalcrom

How do sodium cromoglicate capsules work?

Sodium cromoglicate capsules work by stopping the release of the natural substances in your body (including histamine) that can cause an allergic reaction. They also reduce how severe your symptoms are when you're exposed to substances which you are allergic to.

How long does it take to work?

Allergy symptoms usually start to get better about 2 to 3 weeks after first taking sodium cromoglicate capsules. Try to avoid eating or drinking anything which may cause an allergic reaction.

Are there any long-term side effects?

Sodium cromoglicate capsules are unlikely to have any lasting, harmful effects. Follow your doctor's instructions about taking them.

What will happen if I stop taking it?

If you stop taking sodium cromoglicate capsules, your symptoms may come back.

Will it affect my contraception?

Sodium cromoglicate capsules do not affect any type of contraception, including the combined pill and emergency contraception.

Can I drive or ride a bike?

Yes, you can. Sodium cromoglicate capsules do not affect being able to drive or cycle.

Can I drink alcohol while taking sodium cromoglicate capsules?

Yes, it's OK to drink alcohol while taking these capsules.

Is there any food or drink I need to avoid?

Apart from avoiding foods you are allergic to, you can eat and drink normally while taking sodium cromoglicate capsules.

Can lifestyle changes help with food allergies?

It will help to:

  • check the list of ingredients on pre-packed food and drinks – labels should highlight whether they contain things like celery, gluten, eggs, fish and other ingredients that may cause an allergic reaction
  • try to check the ingredients of unpackaged foods that you usually get in places like bakeries, delis and takeaways
  • read the menu and check foods if you go out to eat
  • take anti-allergy medicine with you when eating out

Find out more about food allergies.

Page last reviewed: 11 July 2022
Next review due: 11 July 2025