Lots of people in my midlife group take

Daily electrolyte drinks are not a treatment for an afternoon slump or for routine headaches — and for someone who already has blood-pressure problems, a high-sodium drink is one of the easiest levers to stop using, not one to add to.
This is general guidance, not a diagnosis, and I cannot change or suggest changes to any medicine.

1) What you've already tried, and what to do instead

High-sodium electrolyte drinks for fatigue/headache
Most people in a midlife group who drink these every day are not losing enough salt in daily life to need it back. What they usually get instead is a lot of sodium (which works against blood-pressure care) and often sugar, plus the caffeine or "pick-me-up" effect that wears off and leaves a second dip. They treat the slump without touching what causes it.

Better, using what's already in your kitchen

• Water through the day instead of a drink that only happens when you feel flat. Spread it out rather than chugging late in the day.
• A real meal at the slump time — with protein and something starchy, not a sweet snack. A large sweet or caffeinated drink can produce a rebound dip.
• Ten minutes of daylight and a short walk before or during the slump. Afternoon light and movement are cheap levers with no sodium.
• A steady bedtime and wake time, even on the school week. Broken sleep is a common driver of both the afternoon dip and morning headaches.
• For a headache: a quiet, dim room, water, and rest — plus a one-line diary note of when it came, what you ate, how you slept, and what you took. That diary is the thing worth taking to a clinician.
• If the fatigue is new, or has been going on for weeks rather than only in the afternoon, that's worth a routine appointment on its own — not an emergency, but not something to keep treating with a drink.

What actually helps the blood-pressure side
The habits that support blood-pressure care are the boring ones already named: less salty food, more vegetables and fruit, more movement, no tobacco. I can't give you a sodium milligram target or a drink count — those numbers belong on the visit, with your clinician.

2) Constraints and the avoid list

• No mystery powders: no unsourced electrolyte sachets, no products bought without a prescription, nothing sold as a "detox" or "energy" mix. Ingredients and dose are unverified and you have no way to check them at home.
• Don't buy prescription medicines online, and don't add any supplement to compensate for stopping the drink.
• Don't stop, start, double or share anyone's prescribed medicine — including blood-pressure tablets — because of a drink, a headache or a home reading. Take the prescribed tablet at the prescribed time if it's due; that's all this page can say.
• Never use a fast-acting blood-pressure pill at home to bring a number down, and never give an adult's tablet to a child.
• Don't use pain relief that hasn't already been advised for that person, don't borrow someone else's migraine or pain tablet, and don't stack painkillers often — frequent use can itself keep the headache going, which is a reason to see a clinician, not to keep taking them.
• For kids, the elder, and anyone else at home: no energy drinks and no dosing anything on your own. Their own clinician decides what they take.
• Keep the drinks you already buy out of reach of children, and don't hand a school-age child a "hydration" pouch as a daily habit.

3) A decision tree you can screenshot

Step 1 — Any of these today? → call your local emergency number now

• A headache that hit at full force within seconds, or the worst headache they've ever had.
• A headache with fever, drowsiness, a stiff neck, light-avoidance and vomiting.
• Sudden weakness in an arm or leg, speech going wrong, confusion, a first fit.
• Chest pressure, pain into arm/jaw/back, or breathlessness.
• Vision flickering or going, or a red painful eye with rainbow rings around lights.
• In a person over 50: a new headache with jaw pain on chewing or a tender scalp.
• A very high home blood-pressure reading *and* they look unwell, or a severe headache, chest pain, confusion, breathlessness or vision change.
• Headache after a knock to the head and they are getting sleepier. Or several people in the house with headache and nausea — get everyone into fresh air first and treat it as a possible carbon-monoxide problem, not a virus.

Step 2 — No to all of those, but the headaches are new, or the pattern has changed, or painkillers are needed more and more often → book a clinician within days, sooner if it's worsening. Bring the diary.

Step 3 — Only their usual, familiar headache in someone who is otherwise well → home care tonight. Quiet dim room, water, an ordinary meal, sleep. Nothing extra.

Step 4 — Fatigue that isn't only the afternoon slump, or has lasted weeks → routine appointment. Ask about a blood test and about whether the fatigue could be something treatable rather than something to drink your way through.

Tonight's 25-minute version

1. Water in a glass they can see, kept within reach during the school run.
2. A real meal at slump time tomorrow, planned now, with something starchy and something protein.
3. Ten minutes of outside light and walking at the same time tomorrow — put it in the calendar so it doesn't need willpower.
4. Two minutes before bed: one diary line for anyone who had a headache today.
5. Put the high-sodium bottles in a bag out of sight for a week, not in the bin — you'll know how it went.

What success looks like in 24 hours

Not "no headaches" — that's not yours to promise. Instead:

• You can say which two things happened on the slump days and which two did not.
• The drink stopped being automatic.
• Anyone who gets a headache has one diary line for the clinician.
• A blood-pressure person has had one conversation scheduled, not a new medicine.

Words you can use with family, work or the doctor

With the person who has blood-pressure problems:
"I've stopped the high-sodium drinks. I know that was a lot of habit to hand over. I'm not changing any tablets — that stays with the clinic. I'm bringing my diary to the appointment."

At the appointment:
"I want to talk about two things: the everyday fatigue in the afternoons, and these headaches. I've stopped the electrolyte drinks. Is the fatigue worth testing for something, and what pattern of headache should send us back the same day?"

If a red flag shows up and you need to hand over:
"He's a [age], the headache started at [time], it built over [minutes/hours] rather than seconds, and he is [alert / drowsy / confused]. Here are his medicines."

To the school or the sibling who shares the house:
"No drinks for him during the school run, and the water bottle goes in the bag. If I say it's a headache day, we do quiet and water — no screens, no extra anything."

One question that changes my advice

Are these headaches and this fatigue the same pattern this person has had for years, or are they new or different from how they usually feel?