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When to Take Beta-Alanine Before Workout

Taking beta-alanine consistently every day is more crucial than the exact timing before a workout. This ensures optimal performance benefits.

Beta-alanine, a non-essential amino acid, is popular among athletes for its performance-enhancing properties. It increases muscle carnosine levels, reducing fatigue and improving high-intensity exercise performance. This article explores the optimal timing for beta-alanine supplementation before a workout, based on scientific studies.

Understanding Beta-Alanine

Beta-alanine, together with histidine, produces carnosine. Carnosine is stored in skeletal muscles and reduces lactic acid accumulation during exercise. This leads to improved athletic performance. Unlike most amino acids, beta-alanine does not synthesize proteins. Instead, it enhances exercise performance by increasing muscle carnosine levels.

Mechanism of Action

Beta-alanine enhances performance by increasing carnosine concentration in muscles. Elevated carnosine levels buffer hydrogen ions (H+), which accumulate during high-intensity exercise and cause muscle acidosis. By buffering these ions, carnosine maintains a stable pH in muscles. This delays fatigue onset and allows prolonged high-intensity performance.

Optimal Timing for Beta-Alanine Supplementation

The timing of beta-alanine intake is less critical than its consistent consumption. Performance benefits come from the cumulative increase in muscle carnosine levels over time, not from a single dose. Therefore, taking beta-alanine consistently every day is more crucial than focusing on the exact timing relative to a workout.

Pre-Workout Convenience

Taking beta-alanine pre-workout can be convenient and may provide an acute stimulant response. Some users report a tingling or itchy sensation known as paresthesia, which can serve as a psychological cue that the supplement is working. This sensation is temporary and not harmful.

Dosage Recommendations

The optimal dosage of beta-alanine for performance benefits ranges between 3.2 to 6.4 grams per day. Studies suggest that a total dose of at least 90 grams over a 28-day period (approximately 3.2 grams per day) is necessary to achieve significant performance improvements. For serious athletes, a higher dosage of up to 179 grams over 28 days (approximately 6.4 grams per day) can amplify performance benefits.

Loading Phase

To maximize the benefits of beta-alanine, a loading phase is recommended. This involves taking the supplement consistently for at least 28 days to build up muscle carnosine levels. During this period, maintaining the daily dosage even on non-workout days is crucial to ensure a steady increase in carnosine concentration.

Performance Benefits

Beta-alanine is most effective for exercises lasting between 1 to 5 minutes, where muscle acidosis is a limiting factor. Studies have shown that beta-alanine supplementation can significantly improve performance in high-intensity activities such as sprinting, weightlifting, and CrossFit. For example, a study on amateur boxers found that four weeks of beta-alanine supplementation increased punch force by 20 times and punch frequency by four times compared to a placebo.

Endurance Performance

While beta-alanine is less effective for long-duration endurance events, it can still provide modest benefits. For instance, a study on cyclists found that four weeks of beta-alanine supplementation increased total work completed by 13%, with an additional 3.2% increase after 10 weeks. Another study reported that beta-alanine improved a 10-km running time trial and reduced lactate concentration in physically active adults.

Anaerobic Performance

Beta-alanine enhances anaerobic performance, including power output and fatigue threshold. In a study involving college football players, those who supplemented with beta-alanine for 30 days showed a trend toward lower fatigue rates during anaerobic performance tests compared to a placebo group.

Stacking Beta-Alanine with Other Supplements

Beta-alanine can be effectively stacked with other supplements to enhance its performance benefits. For high-intensity exercises lasting less than 60 seconds, it can be combined with ingredients that support the ATP-PCr energy system, such as creatine, oral ATP, caffeine, and betaine. For endurance sports, additional ingredients like DL-malate, alpha-ketoglutarate, citrates, aspartates, carbohydrates, BCAAs, glutamine, citrulline, and Co-Q10 can be considered.

Safety and Side Effects

Beta-alanine is generally considered safe for most individuals when taken at recommended dosages. The most common side effect is paresthesia, a tingling sensation that occurs shortly after ingestion. This sensation is harmless and temporary. A meta-analysis of 101 human studies reported no major adverse effects on human health with beta-alanine supplementation at doses of 4-6 grams per day.

Key Takeaways

  • Consistent daily intake of beta-alanine is crucial.
  • Timing before a workout is less crucial.
  • Optimal dosage ranges from 3.2 to 6.4 grams per day.
  • A loading phase of at least 28 days is recommended.
  • Beta-alanine enhances high-intensity and anaerobic performance.
  • It can be stacked with other supplements for added benefits.
  • Generally safe with paresthesia as a common side effect.


In conclusion, the timing of beta-alanine supplementation is less critical than the consistency of its intake. To derive the most optimal performance benefits, it is essential to take beta-alanine consistently every day, aiming for a total dose of 3.2 to 6.4 grams per day over at least 28 days. While taking beta-alanine pre-workout can be convenient and may provide an acute stimulant response, the primary performance benefits are due to the cumulative increase in muscle carnosine levels over time. By adhering to these guidelines, athletes and fitness enthusiasts can maximize the performance-enhancing effects of beta-alanine.