Yes, unlike vaccines or many other shots you may think of, this injection is done with a tiny needle that only goes under the skin, not into muscle
What you need to know about this purported hangover remedy

Several methods are introduced to increase the half-life of GLP-1 including: (i) modifying peptides to make them resistant to cleavage by DPP-4, such as exenatide twice daily and lixisenatide, (ii) attaching free fatty acid side chains to liraglutide and semaglutide, which enhances their binding to plasma albumin thereby preventing renal filtration of GLP-1 and prolonging their action in vivo [36, 37], (iii) conjugation of albumin or the Fc fragment of IgG to GLP-1 molecule is used in albiglutide and dulaglutide [37, 38], (iv) development of modified nanoparticles for the controlled release of exenatide-LAR (long-acting release) that provide prolonged release of the peptide [39], and finally, (v) chemical permeation enhancers such as sodium salcaprozate (SNAC) could be utilized to overcome the low permeability and high enzymatic degradation of the gastrointestinal tract of GLP-1 analog that is administrated orally such as semaglutide [40]

Flourishing with psychosis: a prospective examination on the interactions between clinical, functional, and personal recovery processes on well-being among individuals with schizophrenia spectrum disorders
[17] L-Carnitine L-Carnitine, a compound made from amino acids, supports how cells produce energy, including those in the brain
A small effect on the bioavailability which was 12% lower when using the thigh compared with the abdomen but this was not clinically relevant