A universal deadline for prepared MOTS-c cannot be established from a forum rule. Neither an extremely short claimed lifetime nor a reassuring month-long rule is reliable without evidence for the exact material and preparation being discussed.
Different questions are often combined
Chemical stability asks whether the intended substance remains within defined specifications. Microbiological suitability asks a different question. A preparation can retain a chemical signal while failing another quality requirement.
The FDA's MOTS-c chemistry briefing discusses formulation-dependent degradation and aggregation. It does not establish one transferable home-use shelf life for every product sold under the MOTS-c name.
A report that measures one component under one storage condition cannot automatically answer every question about another vial. The container, formulation, test method, storage history and acceptance criteria need to match the claim.
Appearance cannot supply missing validation
A clear solution is not a complete quality assessment. Likewise, the fact that a person noticed an effect after storage cannot tell a reader which compounds were present, whether contamination occurred or whether a preparation remained suitable.
A useful stability claim should identify the tested product, conditions, sampling times, methods and what counted as passing. If a seller provides only a generic instruction, the scientific support remains unclear. A screenshot of an unrelated test does not close that gap.
What a reader should ask for
Request documentation tied to the exact product and intended use, not a borrowed storage chart. For a legitimately prescribed preparation, the dispensing pharmacist is the appropriate source for its labeled storage and beyond-use instructions. Do not replace those instructions with Reddit advice.
For research-only material, this article provides no preparation method, refrigerator timetable or permission to inject stored material. The evidence problem comes before the timetable: the finished preparation must be defined and validated for the use being contemplated.
The practical answer is product-specific, and sometimes the available information is insufficient to answer it. Keeping that uncertainty explicit is more useful than inventing a universal expiration rule.