B12 is naturally present in animal based foods such as: Chicken and lean red meat Fish and seafood such as oysters, clams, salmon, tuna and catfish Dairy products such as milk, cheese, yoghurt, plus vegan milk substitutes that are fortified Eggs Plus, fortified breakfast cereals
In severe cases, if sulfur burps accompany other symptoms such as vomiting, weight loss, or severe abdominal pain, it indicates a more severe underlying issue like GERD or a gastrointestinal infection
2013;88(6 Suppl 1):325
Tanaka M, Matsuo Y, Yamakage H, Masuda S, Terada Y, Muranaka K, Wada H, Hasegawa K, Shimatsu A, Satoh-Asahara N
A Practical Approach to Monitoring Many symptoms of electrolyte imbalance fatigue, occasional muscle cramps, mild nausea are also common side effects of GLP-1 RAs themselves and dont necessarily signal a problem