Have you ever wondered whether you should opt for creatine or protein to boost your sporting goals?
| Sporting goals | Creatine | Protein |
| Increased muscle strength and power | ||
| Muscle mass gain | ||
| Improved performance in short, intense exercise | | |
| Fat loss and muscle definition | ||
| Post-training muscle recovery | ||
| Improved endurance and aerobic capacity |
Index
Glutamine vs protein: key differences
Among the main differences that can be found in each product, the following stand out:
| Glutamine | Protein | |
| Composition | Non-essential amino acid | Macromolecule composed of amino acids |
| Functionn | It aids muscle recovery and repair, strengthens the immune system | Muscle building and repair, contributes to protein synthesis |
| Sources | Meat, poultry, fish, dairy products, eggs, pulses and supplements | Meat, poultry, fish, dairy products, eggs, pulses, protein supplements |
| Absorption | Fast | It varies according to the source (fast or slow) |
| Recommended use | Before and after training, during periods of high intensity or stress, in case of deficiency | Before and after training, as part of a balanced diet |
| Benefits | It helps prevent muscle loss, reduces fatigue and post-workout muscle soreness, promotes recovery, strengthens the immune system | It contributes to protein synthesis, promotes muscle growth and repair, prolongs satiety, aids muscle recovery |
| Supplementation | Available in powder or capsule form, it can be taken with water, juice or protein shakes | Available as powder (protein powder), bars, shakes or various supplements |
| Side effects | Few known side effects at recommended doses | It may cause gastrointestinal discomfort in some people |
| Considerations | It may be beneficial for athletes for endurance athletes or in periods of intense physical stress | Essential for anyone looking to gain muscle mass or support physical recovery and performance |
Which one is best for your objectives?
The key to selecting the perfect supplement for you lies in clearly establishing your sporting goals, the most important functions of which include:
Increased muscle mass
Creatine can boost your ability to perform high-intensity exercise, which can fuel the muscle growth process over time. On the other hand, protein, especially in the form of whey protein, rich in amino acids, contributes to the building of new muscle fibres.
Increased endurance and strength
Creatine is one of the substances that helps the body to quickly recharge ATP, which is the main fuel for our cells. This way you can optimise your performance in the gym with high-intensity workouts performed in short periods of time, which can result in a significant increase in your strength.
Optimising recovery after training
Protein supplements provide essential amino acids to repair and rebuild muscle tissue after exercise. Although creatine can also contribute to restoring energy in muscles, its primary role is not geared towards muscle recovery.
Weight loss
In weight loss, protein is a recommended option. Protein supplements promote satiety, helping to reduce calorie intake. Protein metabolism consumes more energy, which can boost calorie burning.
Purpose of creatine in performance

Creatine is one of the most important organic compounds for sports performance, as it is involved in the production of muscle energy. It is produced naturally in every person’s body, but can also be obtained from supplements to improve endurance, strength, speed recovery, stimulate muscle growth and reduce fatigue.
It functions as a precursor of phosphocreatine, which provides quick energy during exercise and helps regenerate ATP, essential for energy recovery in training. This is why it is widely used among athletes, particularly those involved in high-intensity sports such as HIIT, team sports and CrossFit.
Function of protein shakes in the body
Protein is vital for the health of muscle tissue, especially in weight training. They help repair muscle damage, speed recovery and keep muscles in good condition.
Both beginners and experienced users will benefit from the nutritional intake of protein shakes.
Can you take them together?
Yes, of course.
Just add the dose of creatine to your post-workout protein shake!

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Conclusions
If you are wondering which supplement is more suitable for you, creatine or protein, the choice depends on your personal fitness goals and requirements.
Bibliographic sources
- Cooper R, Naclerio F, Allgrove J, Jimenez A. Creatine supplementation with specific view to exercise/sports performance: an update. Journal of the International Society of Sports Nutrition. 2012;9(1):33. https://jissn.biomedcentral.com/articles/10.1186/1550-2783-9-33
- Pasiakos SM, McLellan TM, Lieberman HR. The effects of protein supplements on muscle mass, strength, and aerobic and anaerobic power in healthy adults: a systematic review. Sports Med. 2015;45(1):111-31. https://pubmed.ncbi.nlm.nih.gov/25169440/
- Tipton KD, Wolfe RR. Exercise, protein metabolism, and muscle growth. Int J Sport Nutr Exerc Metab. 2001;11(1):109-32. https://pubmed.ncbi.nlm.nih.gov/11255140/
- Hultman E, Söderlund K, Timmons JA, Cederblad G, Greenhaff PL. Muscle creatine loading in men. J Appl Physiol (1985). 1996;81(1):232-7. https://pubmed.ncbi.nlm.nih.gov/8828669/

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