Colchicine, Neomycin, Aminosalicylic Acid, H2-blockers (e.g., Ranitidine), and Proton Pump Inhibitors (PPIs, e.g., Omeprazole): These oral medications can all interfere with the intestinal absorption of dietary B12, making the need for injectable B12 more pronounced
Prog Neurobiol
Compounding pharmacies prepare these formulations under USP Chapter 797 guidelines for sterile compounding, and the beyond-use dates they assign are based on a combination of USP default dating, any proprietary stability testing they have conducted, and the specific formulation used
High-Resolution Native Mass Spectrometry
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While it's a good idea to check with a doctor before taking any supplement including creatine no matter how healthy or fit you are, many athletes take creatine