Amino acid

BCAAs

Amino acid studied for intra-workout amino support, reduced perceived soreness, fasted training. How it works, the dose and timing studied, what it interacts with, and the research behind the grade.

Grade C evidence early: mostly mechanism or small studies Also known as Branched-chain amino acids
All compounds
Best for Intra-workout amino support, Reduced perceived soreness, Fasted training
Typical dose 5–10 g (2:1:1 leucine:isoleucine:valine)
Timing Around training, mainly relevant during fasted exercise
Category Amino acid
How it works

What it is and the mechanism

Leucine, isoleucine, and valine; leucine signals muscle protein synthesis. When total daily protein is adequate, isolated BCAAs add little because all essential amino acids are needed to actually build muscle.

Dose and timing

When and how much to take

The dose below reflects the range used in published research. Match the form alongside the milligrams. Set your own wake and bed times to map the timing onto your day.

Timing visualizer

When to take BCAAs

Dose: 5–10 g (2:1:1 leucine:isoleucine:valine). Set your own wake and bed times to map the guidance onto your day.

12a6a12p6pDAY1 dose
12 pmAnytime. Timing is flexible. Pick a slot you can keep consistent.

These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.

Before you stack it

Interactions and cautions

Read these before combining this with other supplements or medication. The risk is rarely the headline, it is the interaction you did not check.

Interactions
  • Levodopa, may reduce absorption
  • Diabetes medications, theoretical glucose interaction
Cautions
  • Largely redundant if daily protein intake is sufficient
  • A complete protein source is usually a better choice
Stacking

What pairs well, and what to keep apart

Derived from shared topics, complementary categories, and the interaction list. Introduce one compound at a time so you can tell what works.

Keep apart from

No direct compound conflicts derived. Still check the interactions list above against your medication.

Explore more

Compounds in the same topics

Often considered alongside this one. Each carries its own evidence grade.