For legitimate laboratories, it is generally available under research use only terms
Antacid drugs that neutralize stomach acid, as well as acid-suppressing agents such as proton-pump inhibitors, can inhibit the absorption of vitamin B 12 by preventing its release from food in the stomach
It is also worth confirming the return and problem-resolution policy, because a real pharmacy has a process for questions about a dispensed product
Unexpected Reactions : Consult a healthcare professional immediately if experiencing severe itching, health problems, or if the condition worsens instead of improving
Kypreos KE, Karagiannides I, Fotiadou EH, Karavia EA, Brinkmeier MS, Giakoumi SM, et al
However, self-prescribing is never a good idea