Can I Take Vitamin B6 with Wegovy?

The direct answer

Semaglutide is a GLP-1 receptor agonist, and Wegovy's drug interactions section has two parts: one on insulin and insulin secretagogues such as sulfonylureas, where the concern is hypoglycemia, and one on oral medicines: Wegovy delays gastric emptying, which may affect absorption of oral medicines [1]. Vitamin B6 appears in neither part.

Semaglutide is broken down by proteolytic cleavage of its peptide backbone and beta-oxidation of its fatty acid side chain, not by cytochrome P450 enzymes, and the label describes very low potential to inhibit or induce CYP enzymes [1]. Pyridoxine is a prodrug metabolized primarily in the liver, and its main active metabolite, pyridoxal 5'-phosphate, accounts for at least 60% of circulating vitamin B6 [7].

For Wegovy tablets, the label says to take them on an empty stomach with up to 4 ounces of plain water and to wait at least 30 minutes before eating food, drinking beverages or taking other oral medications [1].

Does the gastric emptying delay change B6 absorption?

The Wegovy label does not address B6 absorption. It says semaglutide delays gastric emptying and may affect absorption of oral medicines, and it advises increased clinical or laboratory monitoring for drugs with a narrow therapeutic index or that require clinical monitoring [1]. It also reports that in clinical pharmacology trials with semaglutide 1 mg weekly injection, absorption of orally administered medicines was not affected, while a tablet study found levothyroxine exposure rose 33% [1].

Pyridoxine is absorbed in the gastrointestinal tract, mainly in the jejunum [7]. Its intestinal uptake uses specific carrier-mediated transport rather than simple diffusion [8].

How much B6 is a normal dose?

US labels express B6 as a percentage of a 1.7 mg Daily Value [2]. The Recommended Dietary Allowance is 1.3 mg/day for men aged 14 to 50 and women aged 19 to 50, 1.7 mg/day for men over 50, 1.5 mg for women over 50, 1.9 mg in pregnancy and 2.0 mg during lactation [5].

Upper limits differ sharply by region. The US adult upper limit is cited as 100 mg/day, while the European Food Safety Authority in 2023 set an adult limit of 12 mg/day, including for pregnant and lactating women [4][6]. EFSA identified a reference point of 50 mg/day from a case-control study, applied an uncertainty factor of 4, and set limits for children from 2.2 to 10.7 mg/day by age [6].

The B6 risk that exists with or without Wegovy

The 1983 report in the New England Journal of Medicine described seven adults with ataxia and severe sensory-nervous-system dysfunction after daily high-level pyridoxine; four were severely disabled, all improved after withdrawal, weakness was not a feature, and the central nervous system was clinically spared [9].

Later case reports describe clinical neuropathy at intakes of 100 to 6,000 mg/day with onset after 1 to 72 months, including 200 mg/day for 36 months and one woman at 75 mg/day for 2 years [6][4]. A 2023 systematic review of 20 articles concluded that higher B6 levels, usually from supplements, may produce a predominantly, if not exclusively, sensory axonal neuropathy, and that patients report improvement after pyridoxine is stopped [3]. The same review found no firm evidence that low B6 causes neuropathy and could not confirm a therapeutic role for B6 [3]. Recovery may be incomplete: in one case series none of the patients fully resolved after stopping B6, and in another symptoms progressed slowly in most, stabilized in about a quarter and regressed in about 10% [10].

B6 for Wegovy nausea

Nausea is the most common complaint on Wegovy, reported by 44% of people on 2.4 mg versus 16% on placebo in the pooled adult injection trials [1]. The prescription product that pairs a B6 form with an anti-nausea drug is Diclegis, doxylamine succinate with pyridoxine hydrochloride, indicated for nausea and vomiting of pregnancy in women who do not respond to conservative management and not studied in hyperemesis gravidarum [7]. In its 15-day placebo-controlled trial of 261 women, the PUQE score (which combines vomiting episodes, heaves and hours of nausea) fell by an average of 4.8 points with Diclegis and 3.9 points with placebo, a treatment difference of 0.7 points (95% CI 0.2 to 1.2) [7].

That trial tested a two-drug combination in pregnancy, not pyridoxine on its own and not in people taking semaglutide [7].

Other drugs where B6 status already matters

Two other medicines carry B6 statements in their own labels. The isoniazid label says pyridoxine deficiency is sometimes seen with high isoniazid doses, recommends concomitant pyridoxine in malnourished patients and in those predisposed to neuropathy such as alcoholics and diabetics, and notes that acute isoniazid overdose is treated with intravenous pyridoxine [11].

The Sinemet label says pyridoxine in oral doses of 10 to 25 mg may reverse levodopa's effect by speeding aromatic amino acid decarboxylation, but carbidopa blocks that action, so Sinemet can be given to patients taking supplemental B6; the same label warns that carbidopa/levodopa may reduce B6 levels and that seizures associated with B6 deficiency have been reported [12].

Tingling on Wegovy: two possible explanations

The Wegovy label lists dysesthesia, grouped as paresthesia, hyperesthesia, burning sensation, allodynia, skin burning sensation, pain of skin and sensitive skin, at 2% versus 1% on placebo with the 2.4 mg dose [1]. In the two 72-week trials of the 7.2 mg dose, dysesthesia was reported by 22% on 7.2 mg, 6% on 2.4 mg and 0% on placebo; the label says it rises with dose, and 18% of those affected on 7.2 mg had not recovered by the end of the trial [1].

High-dose B6 can also cause numbness and sensory changes [3][5]. Total daily B6 across multivitamins, B-complex products and single-ingredient tablets is the part that can be added up.