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Pyridoxine Hydrochloride + Doxylamine Succinate: Brands, Price & Uses in Bangladesh
Pyridoxine Hydrochloride + Doxylamine Succinate is a fixed-dose combination of a vitamin B6 analogue (pyridoxine) and a sedating antihistamine (doxylamine) used specifically for one indication:…
About Pyridoxine Hydrochloride + Doxylamine Succinate
Indications of Pyridoxine Hydrochloride + Doxylamine Succinate
Pyridoxine Hydrochloride + Doxylamine Succinate is a fixed-dose combination of a vitamin B6 analogue (pyridoxine) and a sedating antihistamine (doxylamine) used specifically for one indication:
- Nausea and vomiting of pregnancy (NVP): Established, FDA-approved treatment of nausea and vomiting of pregnancy in women who have not responded adequately to conservative management (dietary and lifestyle changes such as eating small frequent meals, avoiding triggers, and rest).
Pyridoxine Hydrochloride + Doxylamine Succinate is not indicated for morning sickness prevention before symptoms occur, for hyperemesis gravidarum requiring intravenous therapy or hospitalization, or for nausea/vomiting due to other causes. It is not intended for use as a general antihistamine or sleep aid, although the individual components have those actions off-label.
Dosage & Administration of Pyridoxine Hydrochloride + Doxylamine Succinate
Adult Dose (Nausea and Vomiting of Pregnancy)
| Step | Regimen |
|---|---|
| Starting dose | 2 tablets once daily at bedtime, on an empty stomach, with water |
| If symptoms persist into the day | Increase to 1 tablet in the morning + 2 tablets at bedtime (3 tablets/day) |
| If symptoms persist further | 1 tablet in the morning + 1 tablet mid-afternoon + 2 tablets at bedtime (4 tablets/day) |
| Maximum dose | 4 tablets per day (1 morning, 1 mid-afternoon, 2 bedtime) |
Dose titration should be individualized under physician guidance based on symptom response, starting at bedtime and adding daytime doses only as needed.
Pediatric Dose
Not applicable. Pyridoxine Hydrochloride + Doxylamine Succinate is indicated only for nausea and vomiting of pregnancy in adult women; it has no pediatric indication.
Renal/Hepatic Impairment
Specific dose adjustment guidance for renal or hepatic impairment has not been well established; use with caution and physician supervision in these populations, as doxylamine clearance may be reduced.
Side Effects of Pyridoxine Hydrochloride + Doxylamine Succinate
The most common adverse effect of Pyridoxine Hydrochloride + Doxylamine Succinate is somnolence (drowsiness), reported frequently and reflecting the sedating antihistamine component; patients should be cautioned about driving or operating machinery until they know how it affects them. Other reported effects include:
- Dry mouth
- Dizziness
- Headache
- Irritability
- Less commonly, other anticholinergic effects such as urinary retention or blurred vision
Contraindications of Pyridoxine Hydrochloride + Doxylamine Succinate
Pyridoxine Hydrochloride + Doxylamine Succinate is contraindicated in:
- Known hypersensitivity to doxylamine succinate, other antihistamines with a similar chemical structure (ethanolamine-class antihistamines), or pyridoxine hydrochloride.
- Concomitant use with monoamine oxidase inhibitors (MAOIs), which markedly potentiate the anticholinergic and sedative effects of the doxylamine component.
Frequently Asked Questions about Pyridoxine Hydrochloride + Doxylamine Succinate
What is Pyridoxine Hydrochloride + Doxylamine Succinate used for?
Pyridoxine Hydrochloride + Doxylamine Succinate is used to treat nausea and vomiting of pregnancy (morning sickness) in women who have not responded adequately to conservative measures such as dietary changes and rest.
Is Pyridoxine Hydrochloride + Doxylamine Succinate safe to take during pregnancy?
Yes. Pyridoxine Hydrochloride + Doxylamine Succinate is specifically approved and well-studied for use during pregnancy for this exact indication, and is recommended by obstetric guidelines as a first-line pharmacologic option when needed. It should still only be taken exactly as directed by your physician.
Can I take Pyridoxine Hydrochloride + Doxylamine Succinate while breastfeeding?
Pyridoxine Hydrochloride + Doxylamine Succinate contains doxylamine, a sedating antihistamine that passes into breast milk and may cause drowsiness in a nursing infant. Use it while breastfeeding only with caution and under your physician's guidance.
Will Pyridoxine Hydrochloride + Doxylamine Succinate make me drowsy?
Yes, drowsiness (somnolence) is the most common side effect due to the antihistamine component. Avoid driving or operating machinery until you know how it affects you, and avoid alcohol or other sedating medicines while taking it.
Can I crush or split the Pyridoxine Hydrochloride + Doxylamine Succinate tablet?
No. Pyridoxine Hydrochloride + Doxylamine Succinate tablets are delayed-release and must be swallowed whole with water on an empty stomach; crushing, splitting, or chewing destroys the delayed-release effect.
What should I do if I miss a dose or take too much Pyridoxine Hydrochloride + Doxylamine Succinate?
If you miss a dose, continue with your next scheduled dose; do not double up. If you or someone else has taken more than the recommended amount, seek immediate medical attention or contact a poison control center right away, as overdose can cause serious anticholinergic toxicity.
Disclaimer
The information provided is accurate to the best of our knowledge, but it does not replace professional medical advice. We cannot guarantee its completeness or accuracy, and the absence of specific information about a drug should not be taken as an endorsement. We are not responsible for any consequences arising from this information, so please consult a healthcare professional for any concerns or questions.