Is Your Collagen Supplement Affecting Your Liver?

Collagen supplements and liver enzymes are more closely connected than most people realise, and if you take collagen daily, it is worth understanding what the science actually says.

Quick answer:

Collagen supplements are generally considered safe for healthy individuals with normal liver function
No direct clinical evidence shows that collagen supplements cause liver enzyme elevation (such as ALT or AST) in healthy adults
Concerns about collagen and the liver are mostly linked to excessive intake, low-quality products containing fillers or additives and pre-existing liver conditions
The collagen that accumulates in a diseased liver is a result of injury and inflammation, not from taking collagen supplements
If you already have elevated liver enzymes, consult a healthcare professional before starting any supplement

Collagen is the most abundant protein in the human body, making up roughly 30% of total protein content. It provides structural support to your skin, joints, bones and organs including the liver. As collagen supplements have grown in popularity across South Africa, so have the questions around their safety, particularly when it comes to liver health.

The concern is understandable. The liver is your body’s primary detox organ, performing over 500 functions. Anything you consume passes through it. So it is reasonable to ask whether adding collagen peptides to your daily routine could place extra strain on this vital organ, or worse, raise your liver enzyme levels.

The honest answer is nuanced. There is a difference between collagen that builds up inside a diseased liver and the collagen peptides you dissolve into your morning drink. Conflating the two creates unnecessary fear, but dismissing all concern is not helpful either.

This guide breaks down what the research actually shows, who should be cautious and how to supplement smartly.

The Scientific Link Between collagen supplements and liver enzymes

When we discuss liver health, we often look at blood tests measuring specific proteins and enzymes. The most common markers are Alanine Transaminase (ALT), also known as Serum Glutamic-Pyruvic Transaminase (SGPT), and Aspartate Transaminase (AST). These enzymes normally live inside liver cells. When those cells are damaged or inflamed, the enzymes leak into the bloodstream.

A common question we hear is: Is it safe to take collagen supplements with elevated Serum Glutamic-Pyruvic Transaminase (SGPT)/Alanine Transaminase (ALT) levels?

Current scientific research on liver enzymes suggests that oral collagen peptides do not inherently cause these enzymes to rise in healthy individuals. However, there is a fascinating relationship between collagen deposition in the liver and advanced imaging techniques.

In clinical studies, researchers use a metric called T1rho elongation to detect early liver issues. Research shows that collagen deposition in the liver is strongly and positively correlated with T1rho elongation (r=0.82, P<0.0001). Specifically, a 1% increase in the area of collagen within the liver tissue contributes to a 1.35 ms increase in T1rho values.

It is vital to understand that this “collagen deposition” is the body’s internal response to injury – like a scar forming inside the organ. It is not the same as the collagen you swallow. In fact, in models of Non-Alcoholic Fatty Liver Disease (NAFLD), which has a global prevalence of 25.24%, the liver begins to accumulate its own collagen as it moves toward fibrosis.

Interestingly, while collagen deposition elongates T1rho values, fat deposition actually shortens them. This means that in the early stages of liver disease, these two factors can sometimes mask each other on scans. For South Africans managing metabolic health, keeping an eye on these markers is essential, as the incidence of hepatocellular carcinoma (HCC) increases significantly as NAFLD progresses to more severe stages.

Natural Liver Collagen vs Supplementation: What You Need to Know

To understand why people worry about collagen supplements and liver enzymes, we need to distinguish between the collagen that is supposed to be in your liver and the “bad” collagen that appears during illness.

The liver is a remarkable organ weighing approximately 1.4 kilograms (about three pounds) in the average adult. It relies on a structural scaffold called the extracellular matrix (ECM). Collagen is a primary component of this matrix, with Type 3 collagen being particularly abundant in healthy liver tissue. It helps maintain the liver’s shape and supports the regeneration of liver cells.

However, when the liver is chronically injured – by alcohol, toxins or high-fat diets – it enters a state called liver fibrosis. During fibrosis, the liver’s wound-healing response goes into overdrive. It begins producing excessive amounts of Type 1 collagen. This excess collagen accumulates, forming scar tissue that prevents the liver from detoxing the body effectively.

This leads to a common misconception: “If excess collagen causes liver scarring, surely taking collagen supplements will make it worse?”

The science says no. When you consume a high-quality supplement, like those found in our collagen-101 guide, your body breaks the protein down into individual amino acids and small peptides. Your liver does not simply “pick up” these peptides and stick them into its own tissue. The pathological collagen seen in fibrosis is manufactured locally by activated cells in the liver, not imported from your diet.

In fact, the amino acids provided by supplements may actually assist the liver in its daily functions, provided the liver is healthy enough to process the protein load.

Potential Benefits: Can Collagen Support Liver Function?

While much of the conversation focuses on risks, there is compelling evidence that collagen may actually offer anti-inflammatory and antioxidant benefits for the liver.

The secret lies in an amino acid called glycine. Collagen is uniquely high in glycine, which serves as a critical building block for glutathione. Glutathione is often called the body’s “master antioxidant”.

The liver’s main job is to filter toxins. During this process, it creates unstable molecules called free radicals. If left unchecked, these radicals cause oxidative stress and damage liver cells. Antioxidants like glutathione combat these molecules, keeping your liver in balance. By providing a steady supply of glycine, collagen supplementation may support the liver’s ability to produce the glutathione it needs to protect itself.

Furthermore, glycine has been studied for its ability to shield the liver from certain types of chemical injury. In some animal studies, glycine helped reduce the severity of liver damage caused by alcohol and other toxins.

We often discuss these nuances when looking at the benefits and risks of taking collagen powder. For most people, the pro-liver benefits of the amino acid profile in collagen far outweigh the theoretical risks, provided you are using a clean source.

Safety First: How to Choose and Use Collagen Without Risking Liver Health

If you want to support your health without risking your collagen supplements and liver enzymes balance, quality and dosage are your two most important factors.

1. Watch the Dosage

While collagen is safe, more is not always better. A study on high-collagen peptide diets in rats showed that excessive intake (2g per kg of body weight) could lead to liver enlargement and metabolic shifts. For a 70kg human, that would be an astronomical 140g of collagen a day!

In the South African context, we recommend following the FAO/WHO guideline for protein intake, which is approximately 0.83g per kg of body weight. Most people see excellent results with a daily dose of 10g to 20g of collagen. If you are using collagen for “loading” (higher doses for short periods), ensure you are not exceeding 40g per day unless supervised by a professional.

2. Avoid Fillers and Additives

Many liver concerns related to supplements actually stem from hidden ingredients. Cheap supplements often contain:

Artificial sweeteners (which can stress metabolic pathways)
Excessive sodium or sugars
Bulking agents and chemical flow agents
Heavy metal contaminants (if sourcing is not transparent)

At MojoMe, we prioritise purity. Our products are 100% natural and free from fillers, grains and gluten. This is vital because your liver has to process every chemical additive you ingest. By choosing a pure, lab-tested product, you remove the unnecessary “toxic load” from your supplement routine.

3. Check the Source

Whether it is bovine, marine or porcine, the source matters. Marine collagen is highly bioavailable but should be avoided if you have a shellfish or fish allergy. Bovine collagen is excellent for overall structural support. Always check when buying collagen supplements online to ensure the brand provides third-party testing for purity.

4. Consider Your Kidney and Liver Health

If you have pre-existing Chronic Kidney Disease (CKD) or advanced liver cirrhosis, you must be careful with all protein supplements. High protein intake can increase the workload on the kidneys. A clinical study on collagen safety notes that while there is no direct evidence of hepatotoxicity, patients with an eGFR (kidney function) below 30 should avoid high-protein supplements like collagen.

Frequently Asked Questions about Collagen and Liver Health

Can collagen supplements and liver enzymes reveal hidden health risks?

Monitoring your collagen supplements and liver enzymes is a proactive way to manage your health. If you start a collagen routine and notice a significant rise in ALT or AST levels during your next blood test, it is unlikely to be the collagen itself. Instead, it may be a reaction to a filler in the supplement, an interaction with another medication or an underlying condition like fatty liver that was already present. Always consult your doctor if your enzyme levels change unexpectedly. You can find more specific answers in our collagen-qa section.

What are the symptoms of liver issues while taking collagen?

While collagen is generally regarded as safe by the FDA and other global health bodies, you should always listen to your body. Symptoms of liver strain or dysfunction (which could be caused by many factors, not just supplements) include:

Jaundice (yellowing of the skin or eyes)
Persistent nausea or vomiting
Dark-coloured urine
Chronic fatigue
Pain in the upper right side of the abdomen
Unexplained swelling in the legs or ankles

If you experience an anaphylactic reaction – such as difficulty breathing or swelling of the face – after taking a supplement, call emergency services immediately.

Monitoring collagen supplements and liver enzymes for long term safety

For long-term peace of mind, we suggest getting a baseline liver function test before starting any new intensive supplement regimen. This is especially helpful if you are over the age of 50 or have a history of alcohol use or metabolic issues.

Keep an eye out for signs collagen is not working properly, such as digestive upset that doesn’t go away after the first week. Most people find that splitting their dose (e.g. 10g in the morning and 10g in the evening) helps the body process the protein more efficiently.

Conclusion

The relationship between collagen supplements and liver enzymes is generally a positive one. For the vast majority of South Africans, collagen is a safe, effective way to support skin elasticity, joint mobility and even gut health. The fears surrounding liver damage are largely based on a misunderstanding of how the body handles dietary peptides versus how it creates scar tissue during disease.

By choosing a high-quality, science-backed product like MojoMe’s pure multi-collagen or bone broth powders, you can enjoy the benefits of this “super protein” without the risks associated with cheap fillers and chemical additives. Our Cape Town-based team is dedicated to providing award-winning, 100% natural nutrition that supports your body from the inside out.

If you have concerns about your liver health, the best approach is always a combination of high-quality nutrition, regular exercise to stretch and flex your tissues and professional medical guidance.

Ready to support your health with the purest ingredients? Shop MojoMe pure collagen range and experience the difference that science-backed, filler-free nutrition can make.