| Today’s letter |
| The ten minute check that tells you whether it’s the pill |
| In January 2013, the FDA changed one number on a sleeping pill label. The recommended bedtime dose of Ambien for women went from 10 milligrams down to 5. For men it stayed where it was. That pill had been sold in America since the early nineties. So for about twenty years, women were told to take twice what the agency now recommends. The reason was simple: they clear the drug out of the body more slowly than men do. |
| Nobody at the agency said those women had been careless. Yet that is what many of them had been hearing for two decades. It came from a doctor, or a husband, or the voice in their own head. Every time one of them woke up foggy and slow, or shaky on the drive to work, the fault was hers. This year a survey of 1,000 American adults found that 46% now put their medication questions to an AI chatbot. Of those, 44% are asking about side effects and doses… which tells you how many of these questions never get answered anywhere else. |
| “Is it me, or is it the pill?” |
| You know the shape of this. Lights out at eleven, no wine after dinner, the sleep printout from the doctor stuck to the fridge door. Every instruction followed, for years, without one complaint. What you could not do was wake up clear, and by nine in the morning you were already apologizing for yourself. |
| So you worked harder at the parts you could control. Earlier bedtime. More water, less coffee, a fan for the noise… and none of it touched the thing that was happening. The amount of drug still in your blood at seven in the morning was never the amount anyone planned for. Nobody handed you that sentence. You got a printout, and the tiredness stayed yours. |
| Here’s what gets me. |
| None of it was your fault. Not one of those mornings. |
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| Let me show you how I know that. Not with my opinion, but with a study that lined up 86 different drugs side by side. |
| Two researchers went hunting for every medicine where somebody had bothered to measure how it behaves in a woman’s body and how it behaves in a man’s. They found 86 of them, the ordinary contents of a bathroom cabinet. Then they pulled the safety records for the ones where side effects had been counted, which came to 59 drugs. |
| For every drug the comparison was the same two things. First, how much of it ended up in the blood at the same dose. Second, how often side effects were reported by women and by men. |
| What they found |
| Zucker and Prendergast, 2020. Biology of Sex Differences 11(1):32. |
| Her body on the standard dose (more drug, more side effects) |
| Of the 86 drugs, 76 sat at higher levels in women or took longer to clear. Where the side effects had been counted, 96% of those drugs were linked to more reported side effects in women. |
| His body on the same dose (fewer side effects) |
| The pattern did not run the other way. Where a drug sat higher in men, more side effects in men followed only 29% of the time. |
| Same pill, same milligrams, and a different amount of drug still in the body by morning. |
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| In other words, you were not reacting strangely to an ordinary dose. For your body, it may not have been an ordinary dose. |
| You were not too sensitive. The number on the label was never built for your body. |
| So why would one tablet land differently in two people? |
| Most of it is plumbing. A woman is on average smaller, with less blood and less body water for the drug to spread into, so the same milligrams arrive at a higher concentration. Her stomach empties more slowly, and for a long list of medicines the liver and kidneys clear them at a slower rate. The dose lands higher and it stays longer, which is exactly what the FDA said about that sleeping pill: women eliminate it more slowly than men. None of that is a defect. It is a body doing normal work on a number that came out of trials run mostly in men. |
| Those women never stood a chance at a clear morning. Neither did you, I would bet, with whatever is on your list. |
| That’s the part no one says out loud. A dose is an average, and the average was somebody else’s body… |
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| Try this today |
| Tonight, write down every prescription you take with the milligrams, which are printed on the side of each bottle. Add the drugstore things too: the antihistamine, the sleep aid, the stomach pills. Then carry that list to your pharmacy counter this week, on a weekday afternoon when it is slow, and hand it over. You do not need an appointment and asking costs nothing. Say this: “Could any of these be making me tired?” Write down what you hear, and take it to your doctor. Do not stop anything and do not change a dose on your own. That part was never yours to carry. |
| Ten minutes at a counter, and the tiredness finally gets a name. |
| Promise me you’ll try it today? Saying it out loud is half of what makes it stick. |
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| This works for one reason, and it is not that pharmacists are magic. It is that nobody else in the system sees the whole list at once, because the doctor who wrote the third prescription did not write the first two. |
| The agency got there in the end. Twenty years late, one number on one label, and only once the blood levels made the old dose impossible to keep. That is how these corrections tend to arrive, long after the women who needed them. |
| You do not have twenty years to wait, and you do not have to. There’s still time for you. |
| So if you have spent years apologizing for a tiredness you never chose… |
| It was never your fault. |
| — Cole |
| P.S. How many prescriptions are on your list right now? Just the number. Hit reply and send it, nothing else needed. I read every one. |
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