Muscle Supplements: Is There a Best Formula for Older Adults?

Muscle supplements are widely promoted to support strength, muscle mass and healthy ageing. However, researchers continue to investigate which formulations provide meaningful benefits for older adults.

A systematic review and network meta-analysis published in Nutrients on 14 October 2026 examined 20 randomized controlled trials involving 2,160 older adults.

The review identified potential benefits for certain muscle-related outcomes. However, the certainty of evidence was very low when comparing specific supplement formulations.

These findings suggest that no single supplement formula can currently be identified as reliably superior.

What Did the Research Find?

The researchers combined evidence from 20 randomized trials to evaluate the effects of nutritional supplementation on muscle health.

Some interventions showed benefits for selected muscle-related measurements.

However, the available evidence did not establish a clear winner among different formulations.

The researchers also found substantial uncertainty in comparisons between specific supplements.

Therefore, the results should not be interpreted as proof that one product consistently outperforms all others.

Why Does Muscle Health Matter During Ageing?

Muscle health plays an important role in mobility, balance, independence and overall physical function.

As people age, changes in muscle mass, strength and physical activity can affect everyday activities.

Reduced muscle strength may make walking, climbing stairs and maintaining balance more difficult.

Maintaining healthy muscles is therefore an important part of supporting quality of life in older adulthood.

However, muscle mass alone does not provide a complete picture of muscle health.

Strength and physical performance are also essential outcomes.

How Can Muscle Supplements Help?

Nutritional supplements may provide protein, amino acids or other nutrients that contribute to normal muscle function.

Protein supplies amino acids needed for muscle protein synthesis and tissue maintenance.

Certain formulations may be useful when dietary intake is insufficient or nutritional requirements are difficult to meet through regular meals.

However, supplementation does not guarantee improvements in strength or physical performance.

The effects may depend on nutritional status, exercise habits, age and underlying health conditions.

Why Is There No Clear Winner?

Different clinical trials may use different supplement ingredients, doses and treatment durations.

Researchers may also measure different outcomes, such as muscle mass, handgrip strength or walking performance.

These differences make direct comparisons challenging.

A network meta-analysis can compare multiple interventions using both direct and indirect evidence.

However, the reliability of its conclusions depends on the quality and consistency of the underlying studies.

When certainty is very low, supplement rankings should be interpreted cautiously.

The Importance of Resistance Exercise

Resistance exercise is an established strategy for supporting muscle strength and physical function.

Activities such as supervised strength training can help older adults maintain or improve muscular performance.

Adequate nutrition may support the body’s response to exercise.

However, supplements should not automatically replace balanced meals or an appropriate physical activity program.

Individual exercise plans should consider mobility, medical conditions and personal capabilities.

Is Protein Intake Enough?

Adequate protein intake is important, but muscle health depends on several factors.

Overall energy intake, physical activity, sleep and medical conditions may influence muscle function.

Older adults may also have different nutritional requirements depending on their health and activity levels.

For this reason, dietary recommendations should be individualized when necessary.

A healthcare professional or registered dietitian can help assess whether supplementation is appropriate.

What Are the Study Limitations?

Although the review included randomized controlled trials, the evidence was not equally strong across all comparisons.

The certainty of evidence for ranking specific formulations was very low.

Differences in supplement composition, participant characteristics and outcome measurements may have contributed to uncertainty.

Consequently, the review cannot establish which formulation is best for every older adult.

Larger, well-designed trials with consistent outcome measurements are needed.

What Does This Mean for Consumers?

Consumers should be cautious about marketing claims that describe a particular muscle supplement as the most effective option.

A product’s nutritional composition, intended use and supporting clinical evidence matter more than its position in an uncertain ranking.

Supplement decisions should reflect individual nutritional needs rather than promotional claims alone.

People with medical conditions, especially those affecting kidney function or nutrient metabolism, should seek professional advice before starting high-dose supplementation.

Takeaway

Muscle supplements may provide benefits for certain muscle-related outcomes in older adults.

However, a systematic review and network meta-analysis involving 2,160 participants found insufficient certainty to identify one reliably superior formulation.

The findings highlight the importance of evidence-based nutrition, appropriate physical activity and individualized care.

For healthy ageing, the goal should be stronger muscles and better physical function, not simply choosing the supplement with the highest advertised ranking.

Research source: Nutrients, 14 October 2026 — Systematic Review and Network Meta-analysis.