Most people who keep a health record end up with a medication list: the names, the doses, roughly when they started. That list is worth having, and your pharmacy already has a better one.
What your pharmacy does not have, and what nobody else is writing down, is what happened after you took them.
A list is not a record
A list says what you were prescribed. A record says what it did.
Those are different pieces of information, and the second one is the one that is missing everywhere. It is missing from your medical file too, because it exists only in fifteen-minute appointments, months apart, reconstructed from memory by a person who has been in pain since the last one.
That is the gap a log fills. Not the names. The effects.
Record four things
What you took, and when. Including the ones you take without being told to: the over-the-counter painkiller, the antihistamine, the thing that helps you sleep. Those count and they are almost never written down.
Whether it helped, and how much. More on this below, because it is where most records go wrong.
What it did to you besides helping. Side effects are their own entries, and they are frequently the more disabling half.
What you stopped, and why. The most valuable information in the whole file, and the first thing forgotten.
"Did it help" is not a yes or no question
The honest answer is almost never yes or no. It is usually a fraction, and the fraction is the useful part.
Took the edge off. Worked for four hours out of the eight. Worked at first, does not any more. Helps the pain but not the stiffness. Helps enough to sleep, not enough to work.
Write the fraction. "Took the migraine from a 9 to a 6, still could not look at a screen" says something that "did not really help" does not. A whole record of "didn't help" reads as a person who has given up describing things. A record with degrees in it reads as a person paying attention.
If your log offers a scale for this, use the same scale every time. Consistency is what makes a pattern visible six months later. If it does not, invent one and stick to it. Four steps is plenty: nothing, a little, a lot, gone.
Side effects are symptoms
This is the thing people most often leave out, and it distorts the record badly.
If a medication controls your pain but leaves you unable to stay awake past two in the afternoon, the record needs both halves. Written down as "pain manageable on current medication," it describes someone doing fine. Written down as "pain manageable, sleeping four hours every afternoon, cannot drive after taking it," it describes what the day actually looks like.
Neither sentence is more true than the other. The second one is more complete, and the incomplete version is the one that gets written.
Log side effects as their own entries, dated, the same way you log anything else. Drowsiness, nausea, brain fog, weight change, tremor, appetite, mood, the things people find awkward to name. They are consequences of treatment and they belong in the file.
The ones you stopped
Somebody will eventually ask what you have already tried. It might be a new doctor, it might be a specialist, it might be years from now.
By then you will remember three of them and misremember the dates. This is not a failure of yours; it is what memory does with lists of similar things over long periods.
So write it down when it happens:
Feb 3. Stopped the muscle relaxant. Six weeks on it. Some help with the spasms, but I could not stay awake at work and missed two days. Doctor agreed to stop.
That entry answers "what have you tried, and what happened" completely, and it will still answer it in five years. It is also the entry that makes the difference between "we could try X" and "you tried X in 2026 and could not tolerate it."
Include the ones that were stopped for boring reasons too: the ones that did nothing, the ones you could not afford, the ones that ran out and never got renewed.
Things that are not medication
The same logic covers everything else you do to manage the condition. Physical therapy, heat, ice, a brace, a TENS unit, stretches, going to bed early, the exercise that helps and the exercise that costs you the next day.
These are part of what you do to get through a day, they take time and effort, and they are as absent from your medical file as everything else on this page.
Two things to keep out of it
Do not write a diagnosis. Record what happened to you, not what you think it means. "Rash on both forearms starting two days after the new tablet" is an observation and it is useful. "Allergic reaction to the new tablet" is a conclusion, it may be wrong, and it makes the rest of the entry look like guesswork. Describe, and let the clinician conclude.
Do not use the log to argue with your doctor. A file full of complaints about the people treating you is a worse document than the same file describing the same events plainly. Write what was prescribed, what happened, and what was decided.
One thing this log is not for
A record of what helps and what does not is useful to bring to an appointment. It is not a reason to change a medication on your own.
Stopping something abruptly, halving a dose, or restarting something you came off can go badly, and some medications specifically cannot be stopped suddenly. Take the record to whoever prescribes for you and let the record inform that conversation. That is the whole point of having it, and it is a much stronger position than turning up empty-handed and trying to remember.
The short version
Log the effect, not just the prescription. Write what you took and when, including the over-the-counter things. Answer "did it help" with a degree rather than a yes or no, and use the same scale every time. Treat side effects as symptoms in their own right and date them like any other entry. Above all, write down the medications you stopped and why, at the time you stop them, because that is the information nobody else keeps and the first thing you will lose.
Then take it to your prescriber rather than acting on it alone.