Beef-Free Medication: Bovine Gelatin, Tallow, and Other Cattle-Derived Ingredients

Cattle can turn up in medicine in a few ways. The clearest is gelatin, the material of many capsule shells, which is usually made from cattle or pigs. Less visible are magnesium stearate, stearic acid, and glycerin, which can be made from beef tallow or from plant oils. The catch is that the label uses the same word whatever the source, so an ingredient list on its own usually cannot tell you whether an ingredient came from a cow.

Lactose, a common filler, is a different case: it comes from milk, not from slaughter. This guide covers which ingredients raise the beef question, why the label leaves them open, what happened to cattle-derived heparin, and how to get an answer for the specific product you take.

Who avoids beef, and why medicine is harder to check than food

For many people, avoiding beef is part of religious life. Pew Research Center notes that Hindus may avoid eating beef because cows are traditionally viewed as sacred. In its survey of adults in India, 72 percent of Hindus said a person who eats beef cannot be Hindu, and 85 percent of Jains and 82 percent of Sikhs said the same about their own religions. Buddhists in the survey were split, with about half saying so.

Medicine is harder to check than food. According to The Vegetarian Resource Group, food and supplement makers often choose to state where an ingredient comes from, although the law does not require it, and the source is not required on pharmaceutical labels either. So a medicine label can name an ingredient that may have come from cattle without telling you whether it did.

Gelatin: the clearest cattle-derived ingredient

Gelatin is an animal product, and the medical literature describes the gelatin used in medicine as coming from cattle or pigs. It is common in capsule shells, and the ingredient list will name it simply as “gelatin.” Whether a particular capsule’s gelatin came from a cow or a pig is a question only the manufacturer of that product can answer, and the answer can differ from one manufacturer to the next.

Gelatin is also one of the easier ingredients to work around, because the question is often whether the capsule shell can be avoided altogether. Our guide to gelatin in medication covers gelatin-free capsule options and how to ask about them.

Tallow, stearates, and glycerin: what the label leaves open

Tallow is an animal fat, and when it is named, its origin is not in doubt. The harder cases are ingredients that can be made from tallow or from plants and carry the same name either way.

• Magnesium stearate and stearic acid. Magnesium stearate is a lubricant that keeps tablet and capsule ingredients from sticking to manufacturing equipment, and it is made from stearic acid. According to The Vegetarian Resource Group, the principal commercial sources of that stearic acid are cottonseed, coconut, and palm oils, while animal fats such as tallow or lard are much less common. As of 2022, the group found plant sources were the major ones for both food and medicine.
• Glycerin (glycerol). Animal fats such as beef tallow, or vegetable oils, are the common starting materials. In 2012, a major glycerin producer estimated for the same group that about 30 percent of the glycerin used in the United States was made from tallow. That figure covered all uses, not just medicine, and it is now more than a decade old.

Plant sources are the norm, but the exceptions are real. When The Vegetarian Resource Group asked drug makers about specific products in 2022, most said the stearates in those products were plant-based or not from animals. One company, however, said the stearic acid in some of its tablets came from beef at that time, and explained that its ingredient supply changes. That is why the question has to be asked about the product you actually have, and asked again when it changes. People with alpha-gal syndrome ask the same questions about the same ingredients for medical reasons, and our alpha-gal medication guide covers magnesium stearate in depth.

What about lactose? Lactose is a sugar that is naturally found in milk, and it is used as a filler in some medicines. It does not come from slaughter, so it is not a beef ingredient in the way gelatin or tallow can be. Whether dairy fits your practice is a question for you and your tradition, not one the label can settle. If you keep a vegetarian diet as well, our vegetarian medication guide covers the other slaughter-derived ingredients to check.

Heparin: a medicine that used to come from cattle

Sometimes the animal question applies to the active ingredient itself. Heparin, an anticoagulant (blood thinner), is one example. According to the FDA, the original heparin drugs approved in the United States, in the 1930s, were made from cow lung. Manufacturers voluntarily withdrew bovine lung heparin from the US market in the late 1990s, because of concerns about the agents that cause “mad cow” disease, and replaced it with heparin from pigs. Bovine mucosal heparin, made from cattle, is still manufactured and available in South America.

The FDA has since encouraged manufacturers to develop bovine heparin again, as a way to diversify the sources of heparin. So if you avoid beef and are prescribed heparin, it is reasonable to ask what the product you are given is made from. Heparin from pigs raises its own questions for other patients, which our guide to pork-derived ingredients in medication covers.

When a medicine you need may contain a cattle-derived ingredient

A 2013 study in a medical ethics journal asked religious leaders about medicines made with animal-derived ingredients. The respondent for Vaishnavism, which the study describes as the major branch of Hinduism, said drugs containing bovine or porcine material were not permitted, because the killing of animals, and especially of cows, was considered sinful. The same respondent said those rules could be set aside in an emergency, or when no alternative drug existed and the treatment was considered life-prolonging. The Sikh respondent took a similar position. The authors are careful to note that some Hindus and Sikhs may not share that stance.

Those are one study’s findings, not rulings. The person who decides what is acceptable for you is your own religious authority, or you, where your tradition leaves it to personal conscience. What this guide can do is help you bring them the facts.

How to check your medication

• Read the inactive ingredients. Look for gelatin and tallow, and note magnesium stearate, stearic acid, and glycerin as questions rather than answers.
• Ask your pharmacist whether a tablet, a gelatin-free capsule, or another manufacturer’s version of the same medicine is available.
• Ask the manufacturer whether an ingredient is plant-derived, animal-derived, or synthetic, and if it is animal-derived, which animal it came from.
• Ask again when something changes. A new manufacturer or a new supplier can mean a different source, even for the same medicine.
• If you are prescribed heparin, ask what the product you are given is made from.
• Look it up in the app. The AllergenMeds app flags ingredients like these in the exact product you look up, so you know which questions to ask.

infoThis guide is for education only, not medical advice. Always talk to your doctor or pharmacist before starting, stopping, or switching any medication.