4 times a day medication schedule

Four times a day vs. every 6 hours

The two hospital pharmacies agree to the minute. Four times a day fits into 12 hours, from 9 AM to 9 PM. Every 6 hours spreads the same four doses over 18 hours, from 6 AM to midnight, which only fits around sleep if your day runs at least that long.

So four times a day is the gentler instruction. If a family member came home from the hospital with a q6h medicine on their papers, a midnight dose may be part of it.

Pick a first dose, get the other three

This follows Medical News Today's pharmacist example for four times a day (8 AM, noon, 5 PM, 9 PM), with gaps of 4, 5 and 4 hours. Start whenever your day starts:

Does four times a day mean every 6 hours?

Often not strictly. In their guide to giving a child medicine, AAFP's family doctors say a drug label reading "every 6 hours" generally means four times a day, for example breakfast, lunch, supper and bedtime, and that it doesn't always mean waking the child in the night.

Even spacing matters for some medicines. UConn's pharmacy leaves antibiotics, pain medicines and seizure medicines off its standard times, because they work better at equal intervals that keep a steady level in the blood. With one of those on a four-times-a-day label, ask the pharmacist whether the doses have to stay 6 hours apart overnight. If they do, the every-6-hours chart is the one to print.

Meals and bedtime: the usual four

Four doses a day are often tied to three meals and bedtime, and both hospital tables have their own line for that. UF Health gives "with meals and at bedtime" 8 AM, noon, 5 PM and 9 PM. UConn gives it 8 AM, noon, 5 PM and 10 PM.

When the instruction says before or after meals, UConn moves the three meal doses and keeps bedtime at 10 PM: before meals and at bedtime is 6 AM, 11 AM, 4 PM and 10 PM, and after meals and at bedtime is 9 AM, 1 PM, 6 PM and 10 PM. So treat the printout's 8 AM, noon, 6 PM and 9 PM as a starting point, and write in the times your meals actually happen.

Questions about dosing 4 times a day

How many hours apart is 4 times a day?

About 4 to 5 hours while you're awake, for example 8 AM, noon, 5 PM and 9 PM. Exactly 6 hours apart around the clock is the stricter "every 6 hours" instruction.

Is 4 times a day the same as every 4 hours?

No. Every 4 hours around the clock is six doses. UF Health's table gives them at 1 AM, 5 AM, 9 AM, 1 PM, 5 PM and 9 PM: its four-times-a-day times plus two in the night. Medical News Today's pharmacists say even "every 4 hours" most likely means while you're awake, so ask how many doses a day the prescriber wants.

What does QID mean?

QID means four times a day. It comes from Latin, like BID and TID, and pharmacists write it out in plain words on the label. You'll mostly see it on prescriptions and hospital papers.

What if I miss one of the four doses?

Don't double up on the next one. What to do depends on the medicine, so check the leaflet or call the pharmacist.