Are Your Collagen Supplements a Complete Source of Protein?

Are Your Collagen Supplements a Complete Source of Protein?


Collagen is the most abundant protein in the body. It makes and supports all connective tissue within the human body. Collagen has become extremely popular in recent years, being used to enhance total-body wellness. However, it is a debatable topic as to whether collagen supplements are a complete or incomplete source of protein.

What is a complete protein source

A food is considered a complete protein when it contains all nine essential amino acids (EAAs) that our body cannot produce on its own. Even if the food is missing only one EAA, it becomes an incomplete protein source1. 

Collagen is made up of 19 amino acids, being uniquely high in 3 key amino acids: glycine, hydroxyproline and proline. Research suggests that collagen protein lacks one essential amino acid and therefore is categorised as an incomplete protein source1. The missing EAA is tryptophan.

Tryptophan is one of the most important EAA’s. The body uses it to help make melatonin and serotonin. Melatonin helps regulate sleep; serotonin helps regulate appetite, sleep, mood, and pain2. Clearly, essential! 

Unfortunately, if your collagen supplement is missing Tryptophan or any EAA,  it cannot be considered a complete source of protein.

If you are looking for a collagen supplement that is a complete protein source, we’ve got you covered! 

Collagen Switch has been created to support that ‘healthy glow’ we are all looking for. Collagen Switch is gut-friendly, fast absorbing, great tasting and most importantly… 

It is a complete source of protein, containing ALL essential amino acids!

What makes Collagen Switch different?

Collagen Switch has tryptophan, making it a complete source of protein. Consuming complete proteins contributes to a healthy body weight and overall good health. Complete proteins will also increase satiation in the body, which will ultimately leave the body feeling fuller for longer3. Collagen Switch also contains a powerful digestive enzyme blend, creating an easy digesting collagen supplement. To increase absorption within the body, Collagen Switch also has added Vitamin C. The formula includes no artificial colours, no added gluten, and no sugar; making it a clean, natural, and supportive collagen supplement. Collagen Switch is a source of complete protein, for complete results! 

If you want to feel the benefits of a complete collagen supplement, ditch those that are missing that one special ingredient! Find a collagen supplement that is right for YOU and YOUR goals. 


For more information on how to find the right collagen supplement, check out our latest blogs!

Disclaimer: The above article is merely a guide and is in no way a recommendation or a treatment protocol for any health conditions or diseases. You should always consult with a qualified health care provider before changing your supplement, training or nutritional strategy. Supplementation should not be attempted by pregnant or breastfeeding women, anyone on prescription medication or children under the age of 15 unless advised by your qualified health care provider.


1Paul, C., Leser, S., & Oesser, S. (2019). Significant Amounts of Functional Collagen Peptides Can Be Incorporated in the Diet While Maintaining Indispensable Amino Acid Balance. Nutrients, 11(5), 1079.

2 Tryptophan. (n.d.). Retrieved February 15, 2023, from,energy%20metabolism%20and%20DNA%20production.

3 Complete proteins and their benefits (no date). Available at:,process%20and%20oxygenate%20the%20blood. (Accessed: February 21, 2023).