Overview
11 DESCRIPTION Doxylamine succinate and pyridoxine hydrochloride delayed-release tablets are round, white, film‑coated, delayed-release tablets containing 10 mg of doxylamine succinate, USP and 10 mg of pyridoxine hydrochloride, USP. Tablets are imprinted on one side with “ DP 1 ” in black ink and plain on other side.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action The mechanism of action of doxylamine succinate and pyridoxine hydrochloride is unknown. 12.3 Pharmacokinetics The pharmacokinetics of doxylamine succinate and pyridoxine hydrochloride has been characterized in healthy non-pregnant adult women. Pharmacokinetic results for doxylamine and pyridoxine, including its vitamin B 6 metabolites, pyridoxal, pyridoxal 5’-phosphate, pyridoxamine and pyridoxamine 5’-phosphate, are summarized in Tables 2 to 5. Absorption A single-dose (two tablets) and multiple-dose (four tablets daily), open-label study was conducted to assess the safety and pharmacokinetic profile of doxylamine succinate and pyridoxine hydrochloride administered in healthy non-pregnant adult women.
Indications
- 1 INDICATIONS AND USAGE Doxylamine succinate and pyridoxine hydrochloride delayed-release tablets are indicated for the treatment of nausea and vomiting of pregnancy in women who do not respond to conservative management. Limitations of Use Doxylamine succinate and pyridoxine hydrochloride delayed-release tablets havenot been studied in women with hyperemesis gravidarum. Doxylamine succinate and pyridoxine hydrochloride delayed-release tablets are a fixed dose combination drug product of doxylamine succinate, an antihistamine, and pyridoxine hydrochloride, a Vitamin B 6 analog, indicated for...
Common Doses
- Refer to label
Dosage
2 DOSAGE AND ADMINISTRATION Take two tablets daily at bedtime. If symptoms are not adequately controlled, the dose can be increased to a maximum recommended dose of four tablets daily (one in the morning, one mid-afternoon and two at bedtime) as described in the full prescribing information. ( 2 ) 2.1 Dosage Information Initially, take two doxylamine succinate and pyridoxine hydrochloride delayed-release tablets orally at bedtime (Day 1). If this dose adequately controls symptoms the next day, continue taking two tablets daily at bedtime.
Contraindications
- 4 CONTRAINDICATIONS Doxylamine succinate and pyridoxine hydrochloride delayed-release tablets are contraindicated in women with any of the following conditions: Known hypersensitivity to doxylamine succinate, other ethanolamine derivative antihistamines, pyridoxine hydrochloride or any inactive ingredient in the formulation. Monoamine oxidase (MAO) inhibitors intensify and prolong the adverse central nervous system effects of doxylamine succinate and pyridoxine hydrochloride [see Drug Interactions (7.1) ] .
Side Effects
- 6 ADVERSE REACTIONS The following adverse reactions are discussed elsewhere in the labeling: Somnolence [see Warnings and Precautions (5.1) ] Falls or other accidents resulting from the effect of the combined use of doxylamine succinate and pyridoxine hydrochloride with CNS depressants including alcohol [see Warnings and Precautions (5.1) ] The most common adverse reaction with doxylamine succinate and pyridoxine hydrochloride (≥ 5 percent and exceeding the rate in placebo) is somnolence. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Bionpharma Inc.
Interactions
- 7 DRUG INTERACTIONS Severe drowsiness can occur when used in combination with alcohol or other sedating medications. ( 7 ) 7.1 Drug Interactions Use of doxylamine succinate and pyridoxine hydrochloride is contraindicated in women who are taking monoamine oxidase inhibitors (MAOIs), which prolong and intensify the anticholinergic (drying) effects of antihistamines. Concurrent use of alcohol and other CNS depressants (such as hypnotic sedatives and tranquilizers) with doxylamine succinate and pyridoxine hydrochloride is not recommended. 7.