Does Qsymia keep you awake?
Bottom line
Yes. Insomnia is listed among the common adverse reactions on Qsymia's own FDA label, published 2026-04-24.
No clinician has reviewed this page. Label and trial statements are quoted from the FDA label or the trial cited beside them. General guidance is marked as such, and every price carries the date it was verified. That is sourcing, not medical review. What we do and do not check · Who checked the price
Last updated 2026-04-24 — the FDA label this page quotes. Read and dated by Alex Seot.
Does Qsymia keep you awake?
Yes, and it is on the label rather than only in reports: insomnia appears among the common adverse reactions in Qsymia's FDA prescribing information, published 2026-04-24. Listed means it was seen often enough in the trials to be printed, not that it happens to everyone. The drugs on this site that list insomnia act on the brain's arousal chemistry: a stimulant, or an antidepressant that raises noradrenaline and dopamine. The wakefulness is the same pharmacology that suppresses the appetite, not a separate effect that happens to come along with it. That is why the time of day you take it matters more here than for any other symptom on this list, and why the label says when to take it rather than leaving it to preference. It does not follow the dose schedule, so it does not come and go with dose increases. What helps first: taking each dose at the time the label sets, and no later. Where the label says morning, an evening dose is the commonest single cause. Where it splits the dose between morning and evening, the evening dose is part of the treatment, and moving it is a question for the prescriber rather than a change to make alone. It stops being ordinary at a specific line: insomnia with a racing or irregular heartbeat, agitation, or any change in mood — low mood, unusual irritability, or thoughts of harming yourself. Mood change is not a wait-and-see symptom on this class of drug; where this page shows a boxed warning above, that warning is about exactly this.
What helps with insomnia on Qsymia?
- 1Taking each dose at the time the label sets, and no later. Where the label says morning, an evening dose is the commonest single cause. Where it splits the dose between morning and evening, the evening dose is part of the treatment, and moving it is a question for the prescriber rather than a change to make alone.
- 2Keeping caffeine to the first half of the day, since it is additive with the drug rather than separate from it.
- 3Telling the prescriber early. Dose timing and dose size are both adjustable, and sleep loss is a reason people abandon these drugs rather than a price of taking them.
The label recommends a negative pregnancy test before starting and every month during treatment, and Qsymia is dispensed only through pharmacies certified under an FDA REMS. The top dose must be tapered rather than stopped, because stopping it abruptly can cause a seizure.
When is insomnia on Qsymia serious?
Insomnia with a racing or irregular heartbeat, agitation, or any change in mood — low mood, unusual irritability, or thoughts of harming yourself. Mood change is not a wait-and-see symptom on this class of drug; where this page shows a boxed warning above, that warning is about exactly this.
Other reactions on Qsymia's label with a page of their own
Would switching drugs help?
Insomnia is on 3 of the 13 FDA labels tracked here, so the other labels are worth reading before assuming a switch avoids it. What a switch does change is what you pay, and Qsymia is $75 a month at the maintenance dose here.
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The listing, the schedule and the warnings are read from FDA prescribing information for QSYMIA, published 2026-04-24; the notes on why it happens and what helps are general guidance, not label text. Information only, not medical advice — a symptom that worries you is a call to your prescriber, not a search result.