Can You Put Fish Oil in Protein Shake?

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Tonya McIntosh

Tonya McIntosh—The main person behind TGFFitness as its Founder and Chief Editor. Get to know more about Tonya


Reviewed By: Ashley Castleberry

As a certified nutrition coach, I’m often asked by friends how to customize or enhance their usual protein shakes. One question that has come up recently is, “Can you put fish oil in protein shake?”

Yes, you can add fish oil to a protein shake. However, I’d recommend using a minimal amount or taking fish oil capsules instead of pouring oil directly into the shake. This prevents the shake from having a strong, unpleasant fishy taste or texture. You can also add other flavors to the shake to help mask any fishy flavors.

Keep reading to find out how fish oil’s omega-3 fatty acids can add extra nutrition to your shake and how to make sure it still tastes great!

Can You Put Fish Oil in Protein Shake?

Fish oil is an extra punch of dietary goodness that you can add to any shake easily. I would advise using capsules, which are available in numbers and variety across physical stores and online vendors alike.

However, make sure you grab an appropriate prescription from your nutritionist or doctor if you have dietary restrictions. The volume of fish oil and the variety you pick may affect digestion or influence nutritional balance.

So, there’s nothing like professional advice to ensure that additional nutrients in your protein shake align with your overall dietary needs and requirements.

What are the different types of Fish Oil and flavors?

The composition of fish oils can vary depending on the type of fish they come from. Different fish provide different amounts of healthy omega-3 fatty acids.

For those who prefer not to taste the oil directly, capsules are a convenient option. They encapsulate the oil, masking its natural taste, which some might find unpalatable. However, it’s worth noting that these capsules typically don’t come flavored.

On the other hand, liquid fish oils might be infused with additional flavors, making them more palatable and easier to consume.

Here are some common varieties of fish oil you’ll find in the market.

  • Cod liver oil is a widely-consumed fish oil that boosts your immune system and offers a variety of vitamins, too. 
  • Krill oil is another variant you’ll find that helps strengthen joints and contains antioxidants, too. 
  • Tuna oil is believed to offer multiple vitamins and is recommended traditionally for good eyesight. 
  • Salmon oil is widely considered an informal medication for heart health. 
  • Sardine oil is rich in Palmitic acid (a good form of fatty acids). 

The liquid form of fish oils comes blended with extra flavors to make them more palatable. For instance, fresh lemon flavor or odorless mint are common masking flavors that get included during manufacturing.

How much Liquid Fish Oil Should You Put in a Protein Shake?


Consult with a dietician or healthcare professional to understand the right daily dosage of fish oil for your body.

The amount of liquid fish oil you should add to a protein shake depends on your individual nutritional needs. As a certified personal trainer and nutritionist, I suggest fish oil amounts tailored to each client’s health goals and diet.

For example, someone looking to increase their omega-3 fatty acid intake may need a different daily dose than someone else with different nutritional requirements. Once you determine the right total daily dose of fish oil for your needs, you can divide that across meals and shakes.

If taking fish oil capsules, an easy approach is to add one capsule per shake if that aligns with your total recommended daily fish oil intake. The key is finding the fish oil dosage that fits with your individual nutrition plan and health objectives.

What are some Benefits of Consuming Fish Oil?

The National Institute of Health reveals that fish oil offers potential benefits to a wide range of functions and systems in your body. Here are a few examples.

  • The EPA and DHA in fish oil’s omega-3 fatty acids work together to help keep your heart healthy and prevent cardiovascular problems. 
  • Fish oil in correct doses can help prevent the occurrence of cancers. 
  • Omega-3 fatty acids are also recommended for improved cognitive functions.
  • Fish oil can also help prevent dementia.
  • Nursing mothers and newborn babies also enjoy better development with a moderate intake of fish oil. 

Should I Add Fish Oil to My Protein Shake Every Day?

If you’re not getting omega-3 fatty acids from other sources, you can think about adding fish oil to your shakes daily.

However, it’s always a good idea to check with a nutritionist or healthcare professional locally first. They can help make sure you’re getting the right amount and not taking too much, especially if you have other sources of omega-3 in your diet.

For those who eat fish often, you might not need to add fish oil to your shakes every day. It’s all about finding the right balance for your body.

Potential Risks of Adding Fish Oil in a Protein Shake

When selecting a fish oil supplement, always opt for well-known brands and premium quality oil. This helps avoid potential digestive issues.

Some mass-market fish oils may contain high amounts of artificial flavors or come from less-than-ideal fish sources. These lower-quality oils could lead to stomach discomfort or bloating.

It’s also important not to overdo your fish oil intake. Consuming more than recommended amounts can disrupt the balance of vitamins and minerals in your body.

Excessive fish oil consumption may also negatively impact immunity and increase oxidative stress on cells.

How to Combine Fish Oil With Your Protein Shake Safely?

You can add moderate or prescribed amounts of fish oil to your shake and include some flavoring to get the most out of your drink.

Do People Add Liquid Fish Oil to Their Shakes?

Yes. People add the liquid form of fish oil to protein shakes because you can blend or mix them better. Consider getting a flavored liquid fish oil so that the pungent taste is not overpowering.

Can You Take Softgel Capsules of Fish Oil First and Then Drink the Protein Shake?

Yes. Most people prefer capsules because you can take them first and then consume the protein shake right after. Or you can swallow the capsules and shake at the same time.

Will the Fish Oil Taste be Masked by the Shake’s Other Flavors?

Yes. Moderate quantities of fish oil will not overpower your shake if you’ve included flavors. Sweet and pleasing flavors like mango or vanilla can make it more palatable and more effective at masking the taste.

Are You Able to Taste the Fish Oil in the Shake?

In most cases, you can mask the fish oil’s taste completely with the right balance of protein powder and flavoring. Try and get a mint-flavored or lemon-scented liquid fish oil if you’re worried about it ruining the shake’s taste.

The Bottom Line

Fish oil remains an excellent nutritional add-on for protein shakes, especially after long sessions at the gym. 

Remember to pair it up with some additional flavors or choose flavored fish oil products so the taste and smell remain enjoyable.

Wondering what other clever nutritional combos you can make with your shake? Here’s how olive oil works in protein drinks!


I recommend checking with a qualified nutritionist or healthcare provider first to determine the appropriate fish oil dosage for your individual needs. While fish oil is generally safe, it’s wise to consult an expert to ensure you get the right amount tailored to you.

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Chief Editor
Tonya McIntosh

Hello there! My name is Tonya McIntosh, and I’m the Founder and Chief Editor of TGFFitness. I’m also a NASM-certified Nutrition Coach and Personal Trainer. With eight years of experience under my belt, I’ve found that one of the most common issues my clients struggle with is remaining consistent.

Finding your main motivator to keep going is easier said than done for Keep Reading.

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