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  1. Whey protein
  2. Creatine
  3. Citrulline
  4. B vitamins
  5. Glutamine
  6. Omega-3 fatty acids
  7. Pre-workout

During training, our muscles suffer micro-damage, which needs to be properly regenerated and strengthened so that the body can train even more effectively. Diet alone does not always provide sufficient nutrients - in such situations it is worth considering supplementation. The right supplements support recovery, improve performance and accelerate muscle development. Below are the most popular supplements used by physically active people.

WHEY PROTEIN

Whey protein is the most commonly chosen supplement among people in training. It is a source of complete amino acids that support regeneration and muscle building. It is available in various forms - concentrate (WPC), isolate (WPI) or hydrolysate (WPH). Whey protein isolate is characterised by the highest bioavailability and low fat and carbohydrate content, making it ideal for reduction and sports diets.

CREATINE

Creatine is a natural compound found in muscles that aids muscle regeneration and increases strength. Creatine supplementation allows you to train longer and more intensely and reduces feelings of fatigue. Additionally, it can accelerate muscle mass gain and shorten recovery time between workouts. The most commonly used form is creatine monohydrate, which is highly effective and affordable.

CITRULINE

Citrulline is an amino acid that increases muscular endurance and reduces feelings of fatigue during training. It helps to remove ammonia from the body and improves aerobic capacity. It also has an antioxidant effect, reducing oxidative stress. It is often an ingredient in pre-workout supplements, but can also be used on its own.

B VITAMINS

B vitamins such as B1, B6, B12, biotin and folic acid play a key role in the conversion of carbohydrates, fats and proteins into energy. They support the nervous system, help maintain hormonal balance and improve concentration. Their supplementation is particularly recommended for active people and those who limit their intake of animal products (vegetarians and vegans).

GLUTAMINE

Glutamine is an amino acid that supports regeneration and protects muscles from catabolism. It accelerates tissue recovery after intensive exercise and also supports the immune system. It can be particularly helpful during periods of high training loads, when the body is at risk of immunosuppression and overtraining.

OMEGA-3 FATTY ACIDS

Omega-3 fatty acids support muscle regeneration, reduce inflammation and have a positive effect on the heart and circulatory system. They also improve concentration and mood, which translates into better training efficiency. Their sources include marine fish, flaxseed and dietary supplements in the form of fish oil capsules.

PRE-TRAINING

Pre-workout supplements are supplements designed to stimulate the body before exercise and increase performance. They contain caffeine, taurine, beta-alanine or arginine - ingredients that improve blood flow and focus. However, it is worth bearing in mind that an excess of such substances can cause hypertension or sleep problems, so they should be used in moderation. People with heart disease or high blood pressure should avoid them.

The right supplementation can significantly improve training performance and recovery, but it cannot replace a healthy, balanced diet. It is advisable to consult a trainer or nutritionist before including supplements and to have regular check-ups.

Summary - key findings

  • The AIS classification indicates, that only selected supplements have strong scientific validation and real use in sport.

  • A-products can support recovery, performance and training results, but their effectiveness depends on the context - type of exercise, level of sophistication and individual needs.

  • Supplementation should be in addition to a well-balanced diet, not a substitute for it.

  • The best results are obtained with targeted preparations, tailored to your specific training goal and health condition.

Bibliography

Important: The contents of this article are solely informational and educational and do not constitute professional medical advice. If you have a serious medical condition or health problem, consult your doctor before you start exercising. The use of the information contained in the article is at the user's own risk.

Publication: Just GYM | Update: 18.02.2026 r.