A complete safety, timing, and dosage guide for combining Vitamin B6 (Pyridoxine) with Magnesium (Citrate, Glycinate, Oxide, Threonate) — including how the two supplements interact, the best time of day to take each, and which populations should be careful.
Yes, you can take vitamin B6 (pyridoxine) and magnesium together — they work synergistically to support nerve, muscle, and mood health.
Vitamin B6 and magnesium together form a complementary team: magnesium helps activate vitamin B6, while vitamin B6 helps move magnesium into cells. This pairing is often used for PMS support, muscle relaxation, and sleep quality. Both nutrients are commonly taken together in mood-support and nighttime relaxation formulas.
Magnesium and vitamin B6 are metabolically interdependent. Magnesium is required for the enzyme activity that converts pyridoxine into its active coenzyme, pyridoxal 5'-phosphate (PLP), while PLP helps shuttle magnesium through cell membranes. Because each depends on the other for optimal activity, combining them can improve cellular levels of both nutrients. This pairing also supports the production of GABA and serotonin, which explains the calming and sleep-quality benefits many people report.
For most people, the simplest approach is to take them together at the evening meal or about 30-60 minutes before bed. A typical combination might be 50 mg vitamin B6 once daily with 200-400 mg elemental magnesium as citrate or glycinate. The water-soluble B6 can be taken with food, but it does not need to be; taking it with food reduces the chance of slight stomach irritation. If you experience vivid dreams or sleep disruption, move the B6 dose to the morning and keep magnesium at night. If you miss a dose, do not double up — just resume your next scheduled dose.
Magnesium's form matters significantly. Oxide is the most common in cheap supplements but is poorly absorbed and often causes diarrhea; citrate is well absorbed and may be helpful if constipation is a concern; glycinate tends to be gentle on the stomach and has a strong calming profile; threonate is the highest-cost form and designed to cross the blood-brain barrier, but research is still emerging. For the B6 + magnesium combination, any of the better-absorbed forms work, though glycinate or citrate are the most practical day-to-day. The B6 form (pyridoxine HCl vs. PLP) matters less for most people, though PLP may be preferred in liver conditions.
This pair is commonly found in PMS support formulas (often alongside chasteberry or evening primrose oil), in magnesium + high-dose B6 combination products marketed for sleep and mood, and in certain energy multivitamins.
Yes, I often recommend taking them together — there is no absorption conflict between the two. In fact, magnesium helps your body activate vitamin B6, and vitamin B6 helps magnesium get into your cells, so combining them is complementary.
Yes, I consider it safe for everyday use at standard doses. Just keep vitamin B6 below 100 mg per day unless your doctor advises otherwise, and adjust your magnesium dose to avoid diarrhea.
I do not wait at all — I take them together. There is no need to space them because they work together rather than competing.
No, I have not found any evidence that they compete. Unlike calcium and magnesium, which can interfere, vitamin B6 is water-soluble and is absorbed differently, so taking it at the same time as magnesium actually supports magnesium's function.
I would say people with advanced kidney disease, where magnesium can accumulate, and anyone already taking high-dose B6 for another condition should be cautious. If you are on antibiotics, just take magnesium at least 2 hours away from your medication.
I recommend taking them with a meal, especially one containing protein. A meal helps reduce the chance of mild stomach discomfort and can improve absorption, though both can be taken on an empty stomach if that works for you.
Reviewed by Caroline M. on April 14, 2026 for accuracy against the sources listed above. This page is educational and is not a substitute for professional medical advice.
The matrix has 86 supplements and 7310 pairwise interactions. Click any cell to see the full breakdown.