Final answer:
Special amino acid supplements should be taken with water or fruit juice on an empty stomach to enhance absorption, and they are categorized based on solubility in water, which affects their utilization.
Step-by-step explanation:
It is true that special amino acid formulations should generally be taken with water or fruit juice, and on an empty stomach. This is recommended to enhance their absorption. When the stomach is empty, it can help ensure that the amino acids do not compete with other nutrients from foods, which might hinder their absorption. Additionally, amino acids can be grouped based on their solubility in water, which can affect how they are absorbed and utilized in the body.
It is important to understand that some amino acids can be synthesized by the body (non-essential amino acids), while others (essential amino acids) must be obtained from the diet. Your body requires all the different amino acids for effective protein metabolism.