There are a variety of common drugs and medicines available which can relieve stomach / abdominal pain and cramping. Here’s a quick guide to the most common medications and drugs which can be used to relieve stomach pain. 
Painkillers
Painkillers such as Paracetamol / Acetaminophen (the same drug, just called different names in different countries) can be useful to relieve mild abdominal pain. Paracetamol / Acetaminophen is a good painkiller for abdominal pain as it does not irritate the stomach which may cause worsening pain. Other painkillers such as Ibuprofen can cause stomach irritation and worsen abdominal pain.
Antispasmodics
Sometimes abdominal pain is caused by the contraction of muscles in the digestive system. This type of pain is often described as “colicky” abdominal pain or cramping pain. This is referring to the pain coming and going which is due to the contraction and relaxation of muscles in the digestive system. Antispasmodic medication works by causing the muscles to relax therefore relieving the pain. Antispasmodics are useful for pain caused by flatulence (trapped wind) and Irritable Bowel Syndrome (IBS).
Common antispasmodic medication for stomach pain include Buscopan (hyoscine butylbromide) and Mebeverine.
Anti-diarrhoeal medicine
Diarrhoea can be the cause of abdominal pain especially when it is due to an infection of the digestive symptom. Loperamide Hydrochloride is a common medication used to treat acute diarrhoea. It has a variety of common brand names including Immodium.
Other medication
There are lots of other drugs and pills which are designed to treat specific causes of abdominal pain. This may be prescribed by a doctor or other healthcare professional if they feel they could help relieve symptoms of abdominal pain.
