Enhances muscle strength and hypertrophy

Creatine supplementation alongside resistance training leads to meaningful improvements in muscle performance. A 2024 systematic review of randomised controlled trials in adults under 50 years found that creatine combined with resistance training increased upper-body strength by about 4.4 kg and lower-body strength by 11.4 kg compared with placebo.

By increasing intramuscular creatine and phosphocreatine stores, creatine helps regenerate ATP during intense exercise, allowing more repetitions and greater training volume. Earlier studies also report that creatine supplementation increased participants’ weight-lifting capacity by 32% and lean muscle mass by 7.2%, while stimulating genes involved in muscle growth.

These findings suggest that creatine offers a reliable ergogenic aid for both strength and hypertrophy when used consistently alongside a structured training programme.

Improves high-intensity performance and recovery

Creatine supports short-burst energy production and buffering of cellular acidosis. A narrative review of sports-performance trials reported that creatine supplementation increases intramuscular creatine stores, improves acid-buffering capacity and glycogen resynthesis, and reduces oxidative stress.

These adaptations improve high-intensity exercise performance, such as sprinting or repeated bouts of resistance exercise, and may reduce fatigue during training sessions. The same review noted that creatine supplementation boosts fast-twitch muscle-fibre activation and may reduce injury risk by enhancing recovery between bouts.

Collectively, these physiological effects explain why creatine remains popular among athletes seeking improved anaerobic performance and faster recovery between sessions.

Supports brain energy metabolism and cognitive function

Beyond muscles, creatine plays an important role in brain energy homeostasis by regenerating ATP in neurons. A 2024 meta-analysis of 16 randomised trials (492 participants) found that creatine supplementation improved memory (SMD ≈ 0.31), attention time and processing speed compared with placebo, with benefits more pronounced in women and in people with underlying health conditions.

The authors noted that evidence for overall cognitive function and executive function remains inconclusive and of low certainty, but the domains of memory and information-processing showed moderate evidence. These findings highlight creatine’s potential as a supportive nutrient for cognitive tasks, especially under conditions of metabolic stress or sleep deprivation, although larger trials are needed to clarify effects in healthy individuals.

Promotes recovery and general wellness

Creatine’s cellular functions extend beyond performance. In addition to facilitating ATP resynthesis, creatine may reduce inflammatory markers and promote satellite cell activity, aiding muscle repair and recovery. The University of Essex notes that creatine can reduce body fat, enhance training quality and shorten recovery time between sessions.

Creatine’s role in supporting cellular energy balance has led to research exploring its benefits for conditions such as sarcopenia and metabolic disorders, with preliminary evidence suggesting that creatine may help older adults maintain muscle mass and function when combined with resistance training.

Overall, creatine is widely considered safe when used at recommended dosages, making it a versatile supplement for both athletic performance and general wellness.

Supports joint health and mobility

Collagen is the primary protein in cartilage and tendons, and hydrolysed collagen supplements provide bioactive peptides that are incorporated into joint tissues. Clinical trials in athletes and individuals with osteoarthritis have shown that collagen supplementation reduces joint pain, improves mobility and enhances ankle or knee function.

A consumer-oriented review notes that randomised controlled trials report improved joint mobility and decreased joint pain with collagen supplementation. These benefits are likely due to collagen peptides stimulating extracellular matrix synthesis and exerting anti-inflammatory, chondroprotective effects within joint tissues.

For active individuals and older adults, daily collagen supplementation can therefore support comfortable movement and joint resilience.

Enhances muscle and tendon adaptation during training

When combined with resistance or concurrent training, long-term collagen peptide (CP) supplementation yields measurable improvements in musculoskeletal performance.

A 2024 systematic review and meta-analysis of 19 studies found that CP supplementation (typically 15 g/day for ≥ 8 weeks) significantly increased fat-free mass (SMD ≈ 0.48), improved tendon morphology (SMD ≈ 0.67), enhanced muscle architecture (SMD ≈ 0.39), increased maximal strength (SMD ≈ 0.19) and promoted faster recovery in reactive strength following muscle-damage protocols.

The authors concluded that CP supplementation offers a promising adjunct to physical training, especially for individuals seeking improved fat-free mass and tendon strength. These adaptations may arise because collagen peptides deliver glycine, proline and hydroxyproline that are quickly absorbed and incorporated into musculotendinous tissues, augmenting collagen synthesis and supporting force transmission.

Thus, collagen supplementation, when paired with exercise, can help athletes and exercisers build stronger muscles and tendons and recover more efficiently.

Promotes bone, skin and overall tissue health

Collagen peptides also contribute to skeletal integrity and skin health. A 2025 meta-analysis examining 17 randomised trials found that collagen supplementation, especially when combined with calcium and vitamin D, improved bone mineral density (BMD) and bone turnover markers, with effect sizes ranging from 0.40–0.58, and suggested that collagen could be an adjunct therapy for osteoporosis management.

The same review explained that collagen peptides modulate bone mineralisation by promoting pre-osteoblast differentiation and limiting osteoclast activity, thereby preserving bone structure. Randomised trials have likewise shown that collagen supplements improve skin elasticity and hydration and reduce wrinkles, reflecting the importance of collagen in dermal structure.

Collectively, these findings show that dietary collagen supports connective tissue throughout the body, from bones and tendons to skin, especially when taken consistently and accompanied by supportive nutrients like vitamin C.

Enhanced strength and hypertrophy

Meta-analyses of older adults show that combining creatine with resistance training produces meaningful gains in lean mass and strength. A 2022 review reported that older adults who supplemented with creatine on training days gained ~1.73 kg more lean mass and achieved greater improvements in chest-press and leg-press strength (standardised mean differences 0.58 and 0.44) compared with placebo.

Post-menopausal women also responded: creatine plus ≥ 24 weeks of resistance training increased upper- and lower-body strength (SMD ≈ 0.41 and 0.44) in the review, and a 32-week trial in women aged 50–71 reported significant improvements in leg-press and chest-press strength. These data underscore creatine’s ability to support strength and hypertrophy in older adults and post-menopausal women when combined with structured training.

Brain health and cognition

Creatine is not just for muscles — it fuels brain cells by regenerating ATP. A 2024 systematic review and meta-analysis of 16 randomised trials (492 participants aged 20–76 years) found that creatine supplementation improved memory (SMD ≈ 0.31), attention time and information-processing speed.

Subgroup analyses showed these cognitive benefits were more pronounced in women and individuals with underlying health conditions. While further research is needed to clarify wider cognitive effects, current evidence suggests creatine may help support mental sharpness, especially in older women.

Functional health and bone geometry

Creatine supplementation also enhances functional performance and muscle quality. A one-year study in older men and post-menopausal women found that creatine (~8 g/day) plus resistance training improved lower-leg muscle density compared with placebo.

Reviews conclude that creatine combined with strength training improves lean mass, muscle density, upper- and lower-body strength and functional performance, which may reduce fall risk in older adults. Although creatine does not significantly increase bone mineral density, it has been shown to modestly improve bone geometry in post-menopausal women — suggesting potential structural benefits beyond muscle.

Joint health and mobility

Hydrolysed collagen delivers bioactive peptides that integrate into cartilage and tendons, exerting chondroprotective and anti-inflammatory effects. Clinical trials in athletes and osteoarthritis patients have shown that daily collagen supplements reduce joint pain, improve mobility and enhance ankle or knee function.

Consumer-oriented reviews report that randomised controlled trials consistently find collagen improves joint mobility and decreases joint pain. These benefits make collagen a valuable support for comfortable movement in active individuals, older adults and women experiencing joint wear.

Muscle and tendon adaptation

A 2024 sports-medicine meta-analysis (19 studies, 768 participants) examined long-term collagen peptide supplementation combined with physical training. Collagen intake (~15 g/day for ≥ 8 weeks) significantly increased fat-free mass (SMD ≈ 0.48), improved tendon morphology (0.67), enhanced muscle architecture (0.39), increased maximal strength (0.19) and accelerated reactive strength recovery (0.43) in the analysis.

The authors concluded that collagen peptides are a promising adjunct to exercise, with moderate evidence supporting these improvements. These adaptations are especially relevant for older adults and female athletes seeking stronger muscles and tendons and better recovery.

Bone, skin and overall tissue health

Collagen peptides support skeletal integrity and dermal health. A 2025 meta-analysis of 17 randomised trials found that collagen supplementation, particularly when combined with calcium and vitamin D, significantly increased bone mineral density at the spine and femoral neck (effect sizes 0.40–0.58) and improved bone turnover markers.

In a year-long trial of 131 post-menopausal women, 5 g/day collagen peptides increased spine and femoral-neck BMD and shifted bone markers toward formation, and a four-year follow-up study reported sustained BMD gains. Randomised trials also show that collagen improves skin elasticity and hydration and reduces wrinkles.

Collectively, these findings demonstrate that consistent collagen supplementation can help post-menopausal women and older adults maintain bone strength, healthier skin and robust connective tissues.