C4 Dynasty Review - 16 Things You Need to Know - DietSpotlight Mar 30, 2022 · The C4 Dynasty label lists caffeine anhydrous at 350 mg. JISSN – L-tyrosine is a non-essential amino acid the body uses to assist with communication between nerve cells. According to an article in JISSN, combining this with caffeine in low doses could improve movement accuracy. Dynasty contains 400 mg of N-acetyl L-tyrosine. Company