Medicina per l'indigestione
Revisione paritaria di Dr Colin Tidy, MRCGPUltimo aggiornamento di Dr Toni Hazell, MRCGPUltimo aggiornamento 26 Mar 2023
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In questa serie:AntiacidiInibitori della pompa protonicaBloccanti H2
Many people use indigestion medicines, usually just occasionally but sometimes more regularly. The same medicines can be used to treat more serious medical conditions such as stomach ulcers or acid reflux. If you need to use indigestion medicines regularly it's very important to see a doctor to get it checked out in case it is caused by an underlying condition that needs further investigations and treatment.
A colpo d'occhio
Indigestion medicines relieve symptoms like discomfort in your upper tummy or chest.
There are three main types: antacids, H2 blockers, and proton pump inhibitors.
They work by reducing stomach acidity or neutralising acid.
Side effects can vary, including diarrhoea, constipation, or headache.
Lifestyle changes like weight loss or avoiding trigger foods can also help.
See a doctor for persistent symptoms or if you are over 55 with frequent indigestion.
Seek medical help for difficulty swallowing, unexplained weight loss, or blood in vomit or stool.

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What is indigestion?
Dyspepsia (indigestion) is used to describe pain and sometimes other symptoms which come from your upper gut (the stomach, oesophagus or duodenum). The symptoms of indigestion often occur soon after eating.
Most people have indigestion from time to time but it doesn't last long and doesn't cause any problems. Some people can have frequent or severe bouts of indigestion and if that is the case, it's very important to see a doctor to get it checked out and receive the right treatment. See also the separate leaflet called Indigestion (Dyspepsia).
When acid from the stomach leaks up into the gullet (oesophagus), the condition is known as acid reflux. This may cause heartburn and other symptoms. See also the separate leaflet called Acid Reflux and Oesophagitis.
What are indigestion medicines?
Indigestion medicines can be used to relieve the symptoms of indigestion such as discomfort in your upper tummy (abdomen) or chest. There are three main types of medicine for indigestion: (see the links for more information about each type of indigestion medicine). These are:
Antiacidi
Antacids usually contain either alluminio oppure magnesium compounds. They work by reducing the acidity in your stomach. They are often combined with other substances such as alginates, which form a protective layer that floats on the surface of your stomach contents. This helps prevent acid going back up into your gullet (oesophagus) - the tube that connects your mouth to your stomach - and so protects against acid reflux and oesophagitis.
Bloccanti H2
These medicines work by reducing the amount of acid made in your stomach. By reducing the acidity in your stomach they can be used to treat indigestion, acid reflux, stomach (gastric) ulcers e ulcere duodenali.
The most commonly used H2 blocker in the UK was ranitidine but it has been discontinued as a precaution because of some impurities found in the medicine. If your doctor feels that you need an H2 blocker, they may prescribe a different one.
Proton pump inhibitors (PPIs)
These medicines also reduce the amount of acid made in your stomach. They are also used to treat indigestion and acid reflux, and stomach and duodenal ulcers. Proton pump inhibitors are very effective at reducing stomach acid and are particularly effective at treating acid reflux and gastro-oesophageal reflux disease (GORD).
How do indigestion medicines work?
The exact mechanism of action varies between the different types of medication. Proton pump inhibitors stop an enzyme from working so that stomach cells can't pump acid into the stomach. H2 blockers bind to receptors in the stomach cells which interferes with the production of stomach acid. Antacids neutralise the acid in your stomach by stopping the action of an enzyme which creates acid.
What side-effects can indigestion medicines cause?
Indigestion medicines are usually effective and don't cause any side-effects. The following describes some of the more common side-effects but always read the information provided with the medicine. If you have any doubts or concerns then get advice from your pharmacist, nurse or doctor.
Antiacidi
Antacids that contain magnesium tend to act as a laxative and may cause diarrhoea. Antacids that contain aluminium have the opposite effect and may cause constipation.
Many antacids contain both aluminium and magnesium compounds so that there is a neutral effect on your bowels. Antacids that contain magnesium carbonate may release carbon dioxide gas in your gut (bowel) and this can cause belching.
Bloccanti H2
The most common side-effects of H2 blockers can include:
Sensazione di malessere (nausea).
Inibitori della pompa protonica
The most common side-effects of proton pump inhibitors include:
Stomach upset - for example, feeling sick (nausea), stomach ache, or wind (flatulence); tummy pain, and being sick (vomiting).
Diarrea.
Costipazione.
Mal di testa.
If you take a proton pump inhibitor for a long time, you are likely to get rebound symptoms of acid reflux when you stop, because your stomach has got used to making more acid as a response to the medicines. This usually only lasts for a few days, up to a few weeks as a maximum and it can be treated with antacids or H2 blockers.
How to help indigestion without medicine
Apart from taking an indigestion medicine, there are many things you can do to help, such as:
Don't smoke.
Reduce or stop drinking alcohol.
Avoid foods that can make indigestion worse, such as fatty foods or spicy foods.
If you have heartburn reflux, it may help if you:
Try to eat smaller meals more frequently rather than larger meals.
Avoid eating for the few hours before you go to bed.
Raise the head of your bed.
When should you see a doctor?
You should see a doctor if you continue to have indigestion symptoms despite a few weeks of using an indigestion medicine. You should always see a doctor if you have any of the following:
Difficulty swallowing (feeling food getting stuck or feeling a lump in your throat).
Losing weight without dieting.
Having a lot of pain in your stomach (abdomen).
Being sick (vomiting), especially if there is any blood in the vomit.
If you’re over 55 and get frequent bouts of indigestion.
Noticing blood in your poo (stools) when you go to the toilet.
Gravidanza
Indigestion and acid reflux are common in pregnancy. It usually helps to reduce the symptoms if you:
Eat smaller meals more often.
Avoid foods and drinks that might make your indigestion worse.
Try not to eat within a few hours of going to bed.
Scelte del paziente per Digestive health medicines

Trattamenti e farmaci
Bloccanti H2
I bloccanti H2 riducono la quantità di acido prodotta dallo stomaco. Vengono usati in condizioni in cui è utile ridurre l'acidità dello stomaco. Ad esempio, per aiutare con il reflusso acido che provoca bruciore di stomaco. La maggior parte delle persone che assumono i bloccanti H2 non sviluppa effetti collaterali.
di Dr Doug McKechnie, MRCGP

Trattamenti e farmaci
Antispastici
Antispasmodics are used to treat symptoms such as abdominal pain and cramps (spasms). They are most often used for symptoms of irritable bowel syndrome. Any side-effects are usually minor.
di Dr Philippa Vincent, MRCGP
Domande frequenti
Are there specific types of food I should avoid if I have indigestion?
Yes, it can be helpful to avoid certain foods that might worsen indigestion symptoms. These commonly include fatty foods and spicy foods.
What is the meaning of 'Do not take indigestion remedies'?
The phrase 'Do not take indigestion remedies' would typically mean that you should avoid consuming medications designed to relieve indigestion. This might be advised if you have certain medical conditions, are taking other medications that could interact, or if your symptoms require a different approach to treatment, as determined by a healthcare professional.
What can help relieve sickness caused by indigestion?
While the article focuses on indigestion, general measures to relieve sickness (nausea) caused by indigestion might include trying to avoid trigger foods, eating smaller, more frequent meals, and certain indigestion medications like H2 blockers or proton pump inhibitors can reduce stomach acid which may help with associated sickness symptoms.
If I am pregnant, what are the best ways to manage indigestion and acid reflux?
If you are pregnant and experiencing indigestion or acid reflux, it's often helpful to eat smaller meals more frequently. You should also try to avoid foods and drinks that tend to make your indigestion worse and avoid eating during the few hours before you go to bed.
How long do the rebound symptoms of acid reflux last after stopping proton pump inhibitors?
If you experience rebound symptoms of acid reflux after stopping a proton pump inhibitor, they typically last for a few days, and a maximum of a few weeks. These temporary symptoms can often be managed with antacids or H2 blockers.
Ulteriori letture e riferimenti
- Corsetti M, Fox M; The management of functional dyspepsia in clinical practice: what lessons can be learnt from recent literature? F1000Res. 2017 Sep 28;6:1778. doi: 10.12688/f1000research.12089.1. eCollection 2017.
- Dore MP, Pes GM, Bassotti G, et al; Dyspepsia: When and How to Test for Helicobacter pylori Infection. Gastroenterol Res Pract. 2016;2016:8463614. doi: 10.1155/2016/8463614. Epub 2016 Apr 28.
- Dyspepsia - pregnancy-associated; NICE CKS, luglio 2022 (accesso solo Regno Unito)
- Dispepsia - GERD comprovata; NICE CKS, luglio 2023 (accesso solo Regno Unito)
- Dispepsia - funzionale comprovata; NICE CKS, dicembre 2022 (accesso solo Regno Unito)
Informazioni sull'autoreVisualizza il profilo completo

Dr Colin Tidy, MRCGP
Medico di base, Autore medico
MBBS, MRCGP, MRCP (Paediatrics), DCH
Il Dr Colin Tidy è un medico del NHS, con sede nell'Oxfordshire.
Informazioni sul recensoreVisualizza il profilo completo

Dr Colin Tidy, MRCGP
Medico di base, Autore medico
MBBS, MRCGP, MRCP (Paediatrics), DCH
Il Dr Colin Tidy è un medico del NHS, con sede nell'Oxfordshire.
Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
Articolo disponibile anche in Inglese, Tedesco, Spagnolo, Francese, Italiano, Portoghese, Hindi, Ebraico, Arabo, and Svedese.
Prossima revisione prevista: 24 Mar 2028
26 Mar 2023 | Ultima versione
7 Mar 2018 | Pubblicato originariamente
Autore:
Dr Colin Tidy, MRCGP

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