Doxylamine succinate maximum daily dose?

Doxylamine succinate dosing depends on the reason you’re taking it.

- For insomnia (sleep aid): typical adult dose is 25 mg by mouth at bedtime. Do not exceed 25 mg in 24 hours (i.e., one tablet per night).

- For allergy/cold symptoms: may be taken 25 mg every 4–6 hours as needed, up to a maximum of 150 mg in 24 hours.

Important cautions:
- Don’t use more than one product containing doxylamine at the same time.
- Avoid alcohol and other sedatives (they can intensify drowsiness).
- Not recommended for long-term use; if sleep problems persist beyond 7–10 days, consult a clinician.
- Use with caution in elderly, pregnant/nursing individuals, or if you have glaucoma, enlarged prostate, or chronic lung problems.

If you have a specific product label, follow that exact dosing, as formulations can vary. If in doubt, check with a healthcare provider.