Last updated March 2026
Essential Amino Acids (EAAs)
Fireblood includes all 9 essential amino acids plus taurine, glycine, and proline, 12 amino acids total. Most multivitamins contain zero. Some supplements offer BCAAs (3 of 9), but research shows all 9 EAAs must be present simultaneously for muscle protein synthesis to proceed at full rate.
What EAAs do
The nine essentials are L-Leucine, L-Isoleucine, L-Valine, L-Lysine, L-Threonine, L-Methionine, L-Phenylalanine, L-Tryptophan, and L-Histidine. Each one does more than build muscle.
Tryptophan converts to serotonin, then to melatonin. That is your mood-to-sleep pathway in two steps. Phenylalanine becomes tyrosine, which becomes dopamine and norepinephrine, the neurotransmitters behind drive and focus. Lysine is required for collagen synthesis and calcium absorption. Methionine feeds the methylation cycle, affecting DNA repair and detoxification. These are not minor, optional processes.
Fireblood also includes three conditionally essential aminos: taurine (heart function and antioxidant activity), glycine (collagen component and sleep support), and proline (another collagen building block). Glycine and proline together make up roughly a third of all collagen in your body. Razak et al. (International Journal of Molecular Sciences, 2017) reviewed the wide-ranging roles of these amino acids.
Why the form matters
Most multivitamins include zero amino acids. Check the label of whatever you take now. Some standalone supplements include BCAAs, which are just three of the nine essentials: leucine, isoleucine, and valine. BCAAs got popular in the fitness industry, but the research has moved on. Jackman et al. (Frontiers in Physiology, 2017) showed that BCAAs alone do not maximally stimulate muscle protein synthesis. You need all nine EAAs present for that.
Free-form amino acids hit your bloodstream faster than protein from whole food, which has to be digested and broken down first. Moberg et al. (American Journal of Physiology, 2016) showed that free EAAs trigger a faster spike in muscle protein synthesis compared to intact protein in the early post-ingestion window. This does not replace eating protein. It adds speed and completeness, especially around training or first thing in the morning when whole food is not in play.
Completeness is the point. If you have plenty of leucine but not enough methionine, protein synthesis stalls at the bottleneck. All nine essential amino acids need to be present simultaneously for muscle building to proceed at full rate.
Signs you might not be getting enough
- Slow recovery after training
- Muscle loss despite consistent workouts
- Low mood, poor motivation, or brain fog (neurotransmitter precursors)
- Poor sleep quality (tryptophan feeds melatonin production)
- Weak or brittle nails, thinning hair, slow wound healing (collagen precursors)
- Frequent illness or slow immune recovery
- Joint pain or stiffness (glycine and proline support connective tissue)
How much you actually need
The WHO sets specific amounts per kilogram of body weight. Leucine, for example, is roughly 39 mg/kg/day. For an 80 kg person, that is about 3.1 g of leucine daily. If you eat adequate protein from varied sources, you probably meet these minimums overall. The real question is timing: are all nine present together when your body needs them most?
If you eat 1.6-2.2 g of protein per kg of bodyweight from varied sources, your total daily intake is likely fine. Supplemental EAAs add speed and completeness in a single dose. That is particularly useful around training windows or during fasting periods.
What Fireblood includes
All 9 essential amino acids plus taurine, glycine, and proline. Twelve amino acids total. Muscle protein synthesis, neurotransmitter production, collagen support, and immune function covered in one formula.
Most multivitamins include zero amino acids. Some supplements include 3 (BCAAs). Fireblood includes 12.
See the full formula