Creatine is widely used in the fitness world to enhance strength performance and muscle growth, but experts warn that users should be aware of its lesser-known effects. According to neurosurgeon Dr Jay Jagannathan, while creatine is among the most researched supplements, it can still lead to certain side effects if not taken correctly.
Creatine works by supplying energy to muscles and is made up of three amino acids. Despite its benefits, some users may experience unexpected physical changes, especially during the initial phase of use.
One of the most common effects is water retention. Creatine pulls water into muscle cells, which can lead to a sudden increase in body weight—typically between one to three kilograms within the first week. This can cause bloating, but the weight gain is not due to fat.
Digestive discomfort is another issue reported by some individuals. Symptoms such as stomach cramps nausea and diarrhoea are more likely when high doses are consumed. Experts suggest splitting the dosage or taking it with meals to reduce these effects.
In some cases, users may experience muscle cramps or strains, particularly in the early stages. Proper hydration plays a crucial role in preventing this issue and supporting overall muscle function.
Kidney-related concerns are also highlighted, especially for individuals with pre-existing conditions. While creatine is generally safe for healthy individuals, it may elevate creatinine levels, making it important for those with kidney issues to consult a medical professional before use.
Weight gain linked to both water retention and increased muscle mass can affect athletes participating in weight-category sports. Monitoring body composition is therefore essential for such individuals.
Another potential risk is dehydration. Since creatine shifts water into muscles, it may reduce overall fluid levels in the body if adequate hydration is not maintained.
To minimize risks, experts recommend a daily maintenance dose of three to five grams. Taking creatine with water or carbohydrates can improve absorption, while regular monitoring of physical responses is advised. Individuals with liver or kidney concerns should always seek medical guidance before starting supplementation.
Although creatine is generally considered safe, understanding its effects and using it responsibly can help users maximize benefits while avoiding unwanted complications.