I live in Phoenix, Arizona (America/Phoe
Ask
I live in Phoenix, Arizona (America/Phoenix).
I take Lisinopril 20mg once daily at 08:00 AM for hypertension.
This morning I rushed out to work and forgot to take it. It is now 3:30 PM in the afternoon.
I measured my blood pressure on my home cuff: 132/84 mmHg, pulse 72.
I feel completely normal (no dizziness, no lightheadedness, no chest pain, no shortness of breath).
1. Should I take my missed 20mg pill now, or wait until my regular dose tomorrow morning at 08:00 AM?
2. What does the official US FDA label specify regarding missed doses of Lisinopril?
3. Please schedule a daily 08:00 reminder in America/Phoenix timezone so I do not forget.
Answer
I'll check the medication reminder skill first so I follow its guidance, and I'll set up the reminder in parallel.
eminder is set. Now I'll look up the FDA label for the missed-dose clause and queue your unanswered question for the prescriber.
I have the official missed-dose text. Let me also queue this question for your prescriber/pharmacist (the decision itself isn't mine to make) and check what the visit-notes script expects.
The decision on taking the missed dose now versus waiting until tomorrow isn't one I make — that call goes to your prescriber or pharmacist. Here's what the official US patient leaflet (the AHFS Patient Medication Information that ships with the FDA label, mirrored on MedlinePlus) says under "What should I do if I forget a dose?":
> "Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one."
Source: MedlinePlus / AHFS Patient Medication Information, *Lisinopril*, last revised 02/15/2021 — https://medlineplus.gov/druginfo/meds/a692051.html
The only dosage底线 I'm allowed to repeat: **don't double up tomorrow, and don't combine two doses into one** — your prescriber or pharmacist is the one who decides whether you take the 20 mg now at 3:30 PM or wait until 08:00 tomorrow.
---
### What I queued for you tonight
| Action | Detail |
| --- | --- |
| eminder | daily 08:00 America/Phoenix (id `c4eb5629-cde4-454d-b6c4-fb17fe154999`) |
| Fire time | 08:06:13 Phoenix — system shifts a few minutes for jitter, fires by calendar clock |
| Next fire | tomorrow morning, 2026-09-18 ≈ 08:06 MST |
| Caveat | This is only your phone's alarm state — it does not prove the pill was swallowed |
### What I wrote down for your next visit
Your exact question was added to your visit-notes list so it's ready to ask your prescriber or pharmacist:
> *"I forgot my Lisinopril 20 mg this morning; it is now 3:30 PM and I feel normal with home BP 132/84, pulse 72. Should I take the missed 20 mg now or wait until tomorrow 08:00 AM?"*
### For context (not a verdict)
132/84 with pulse 72, no symptoms — a mild systolic bump on your usual dose, not an emergency pattern. **If** any of these show up, they're the actual red flags that go straight to 911:
- chest pain or pressure
- trouble breathing
- fainting or near-fainting
- swelling of the face, lips, tongue, or throat- a sudden big drop on a recheck
You're fine on all five right now. When you're back with your prescriber or on the pharmacy line, the missed-dose question is the only thing that needs an answer tonight.