L-GSH supplementation for 3-months also caused a significant increase in TNF- levels in the plasma ( Figure 5C ) and PBMCs ( Figure 5D )
In both the UK and Ireland, injectable B12 is classified as a Prescription-Only Medicine (POM)
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GLP-1 receptor agonists slow gastric emptying and suppress appetite, which can reduce energy intake and cause fatigue Fatigue is most common during initial weeks and dose increases, often improving as the body adapts over several weeks to months Nutritional deficiencies in protein, iron, vitamin D, and B vitamins may develop when food intake drops significantly Optimising nutrition with nutrient-dense foods, maintaining hydration, and gentle physical activity can significantly reduce tiredness Contact your GP if fatigue is severe, worsening, or accompanied by signs of dehydration, hypoglycaemia, or persistent gastrointestinal symptoms Table of Contents Why GLP-1 Medications Can Cause Tiredness Glucagon-like peptide-1 (GLP-1) receptor agonists are increasingly prescribed medications for type 2 diabetes and weight management, including semaglutide (Ozempic, Wegovy) and liraglutide (Victoza, Saxenda)