Phenobarbital Shelf Life (Top voted first)

Does a ten year old pill still have any potensy

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Most likely not.

Even those still sealed in the original factory container that doesn't expose them to the elements that cause degradation start to degrade after about 4 years.

Once those are opened and they're exposed to the elements, degradation usually starts after a year.

Learn more Phenobarbital details here.

At this point, it is best to just dispose of them.

Is there anything else I can help with?

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A doctor told me that if the pill hasn't dissolved or crumbled, that it still has potency.

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"Recently researchers investigated samples of 8 medications that had expired 28 to 40 years earlier and contained 15 different active ingredients in all[3]. The active ingredients tested for were: aspirin, amphetamine, phenacetin, methaqualone, codeine, butalbital, caffeine, phenobarbital, meprobamate, pentobarbital, secobarbital, hydrocodone, chlorpheniramine, and acetaminophen. The results showed that 11 (79%) of the 14 drug compounds were always present in concentrations of at least 90% of the amount indicated on the drug label, which is generally recognized as the minimum acceptable potency."

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we bought phenobarb 8 months ago, has it lost its potency

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