Injections

 Peptide and hormone therapies are administered with ultra-fine needles, typically ranging from 27G to 31G. Subcutaneous injections generally use a short 5/16" needle, while slightly longer 5/8" options may be used for amino acid blends or shallow intramuscular delivery. For reference, these needles are about the size of a pencil eraser to the width of a dime—designed for comfort, precision, and ease of self-administration. 

 You have flexibility in where your therapy is administered. Most treatments are delivered into the subcutaneous layer—just beneath the skin—using a fine, short needle for a comfortable and precise experience. In some cases, intramuscular (IM) injections are required, utilizing a slightly longer needle to ensure accurate delivery into the muscle, depending on individual anatomy. Your care team will guide you in choosing the most effective and comfortable option for your protocol. 

 Subcutaneous injections are administered into areas of soft, pinchable fat—typically the lower abdomen (2–3 inches from the navel), outer thigh, back of the upper arm, or lower back near the flanks. It’s important to rotate sites regularly to prevent irritation and ensure optimal absorption. Intramuscular injections are delivered into deeper muscle tissue, most commonly the upper outer glute (ventrogluteal), deltoid (shoulder), or outer thigh (vastus lateralis). Each method is simple, effective, and guided by your care team for safety and comfort.