How to Treat an Upset Stomach From Aspirin

Aspirin, known chemically as acetylsalicylic acid (ASA), is a widely used nonsteroidal anti-inflammatory drug (NSAID) taken for pain relief, fever reduction, and to prevent cardiovascular events. Unfortunately, gastrointestinal (GI) irritation is a common and recognized side effect, especially for individuals who use it regularly. This irritation occurs because aspirin is inherently acidic and, more importantly, it interferes with the body’s production of prostaglandins, which are compounds that normally help protect the stomach lining from stomach acid. Understanding how to manage this discomfort is important for anyone who relies on this medication.

Immediate Steps for Acute Relief

When stomach discomfort or heartburn strikes shortly after taking aspirin, immediate action can help mitigate the symptoms. The initial step is to stop taking the aspirin immediately until the acute symptoms resolve. It is helpful to sit upright or remain standing, as lying down can encourage acid reflux and further irritation of the esophagus.

Sipping small amounts of clear liquids, such as water or diluted broth, helps to settle the stomach and prevents dehydration if nausea is present. Temporarily adopting a bland diet, featuring foods like bananas, rice, applesauce, or toast, can also reduce the workload on the digestive system. For direct relief of acidity, non-aspirin containing over-the-counter antacids are an option to neutralize stomach acid quickly. Avoid combination products that contain aspirin alongside antacids, as these will only compound the problem.

Strategies to Prevent Future Irritation

Preventing future irritation involves changing the way you take the medication to minimize its direct contact with the stomach lining. Always take your aspirin with a full meal or a substantial snack, never on an empty stomach. The food acts as a physical buffer, mixing with the pill and slowing its dissolution in the stomach.

Drinking a full glass of water, about eight ounces, with the dose ensures the pill washes down completely into the stomach, preventing it from lodging in the esophagus where it can cause localized injury. After taking the medication, remain upright for at least 15 to 30 minutes, which allows gravity to assist the pill in passing through the esophagus and into the stomach.

To further reduce the risk of irritation, limit or entirely avoid alcohol consumption while on an aspirin regimen, as alcohol itself is an irritant to the GI tract. Additionally, combining aspirin with other NSAIDs, such as ibuprofen or naproxen, significantly raises the risk of GI bleeding and should be avoided unless specifically directed by a healthcare provider.

Understanding Safer Aspirin Formulations

Various aspirin formulations are designed to reduce gastrointestinal side effects, offering alternatives to the standard immediate-release tablet. Buffered aspirin contains antacid compounds like magnesium carbonate or calcium carbonate intended to neutralize the acidic environment immediately surrounding the tablet. However, buffered formulas may not provide significantly greater protection against gastric injury than plain aspirin because the systemic effect of prostaglandin inhibition remains.

Enteric-coated aspirin (EC-ASA) has a special coating that resists breakdown by stomach acid, delaying the release of the drug until it reaches the more alkaline small intestine. This coating successfully bypasses the stomach, reducing direct topical injury to the gastric lining. A drawback is that EC-ASA may be absorbed more slowly or erratically, which can be a concern when rapid absorption is needed, such as during an acute cardiovascular event. Even EC-ASA does not eliminate the systemic risk of injury, as the underlying mechanism of prostaglandin inhibition still occurs throughout the body. Low-dose aspirin, typically 81 mg, is associated with a lower risk of GI complications compared to higher doses used for pain and inflammation.

When Stomach Upset Signals a Serious Problem

While mild indigestion is common, certain symptoms of stomach upset can signal a serious underlying problem, such as a stomach ulcer or internal bleeding. Any sign of blood in your digestive tract requires immediate medical attention; stop taking aspirin and contact your doctor right away.

This includes vomiting material that resembles dark coffee grounds, which indicates bleeding in the upper GI tract. The passage of black, tarry stools is a warning sign, as this color suggests digested blood moving through the lower digestive system. Severe or persistent abdominal pain, unexplained weakness, or lightheadedness warrant urgent medical evaluation.