Diabetes Care 35 , 10951097 (2012)
Your intestines can only absorb limited amounts regardless of how much you consume

Seek urgent medical attention (contact 999 or attend A&E) if you experience: Signs of severe dehydration : extreme thirst, very dark urine, dizziness, confusion, or reduced urine output Heat exhaustion or heat stroke : high body temperature (above 40C), rapid pulse, headache, nausea, or altered consciousness [15] Severe abdominal pain , particularly if accompanied by persistent vomiting, which could indicate pancreatitis (a rare but serious side effect of GLP-1 agonists) [1] [8] Allergic reactions : difficulty breathing, swelling of face or throat, or widespread rash Contact your GP or diabetes care team within 2448 hours if you notice: Persistent heat intolerance that significantly affects daily activities or quality of life Ongoing gastrointestinal symptoms lasting more than a few days, which may require dose adjustment Signs of mild to moderate dehydration that do not improve with increased fluid intake New or worsening symptoms that concern you, even if they seem unrelated to temperature If you cannot contact your GP and need urgent but non-emergency advice, call NHS 111

Though there are no possible chances or reporting of vitamin B12 overdosage, it is key to follow the advice of your doctor
As health plans meet with benefit managers to review formulary changes or perform market checks, its important to discuss increasing consumer demand for these drugs and discuss expanding coverage