For a broader look at how these medications work, see how GLP-1 actually works for weight loss
Effect of liraglutide on cardiovascular events in patients with type 2 diabetes mellitus and polyvascular disease: results of the LEADER Trial
Reichert, C
When to Contact Your Prescriber Self-injection technique issues that warrant a clinical call include: a lump or hardened area at the injection site that persists for more than 2 weeks (possible lipohypertrophy), signs of infection (expanding redness, warmth, pus, or fever), allergic reaction at the site (hives, intense itching, or swelling beyond 2 inches), and any systemic symptoms such as severe abdominal pain, persistent vomiting, or signs of pancreatitis
There is no definitive clinical data on this, but user reports suggest that morning injections may produce more daytime bloating while evening injections shift the peak GI effects to overnight (when you are sleeping and not eating)