Magnesium Citrate: Everything You Need to Know Before You Buy

Disclosure: As an Amazon Associate and iHerb affiliate, we earn from qualifying purchases. This post may contain affiliate links, and if you make a purchase through one of these links, we may receive a small commission at no additional cost to you. This helps us continue creating quality content. The selection of links or specific products is made at our own discretion.

Quick Answer

Magnesium citrate is a magnesium mineral bound to citric acid, valued because it’s absorbed relatively well compared to some other forms. It’s most useful for correcting an actual magnesium shortfall, with weaker evidence for extra benefit if your diet already meets your needs.

Introduction

Magnesium is an essential mineral involved in hundreds of biochemical processes in the body — from muscle and nerve function to energy production and immune system support. Many people report that the pace of modern life, unbalanced diets, and daily stress may affect magnesium levels in the body. Magnesium citrate is one of the most common and popular forms of magnesium supplement, known for being relatively bioavailable and easy to absorb compared to other forms like magnesium oxide. In this post, we’ll cover what’s important to know before purchasing this type of supplement.

Key Benefits

• Considered relatively well-absorbed — the citrate form is regarded by some consumers and experts as easier to absorb in the digestive system compared to certain other forms of magnesium.
• Supports muscle and nerve function — magnesium is a mineral involved in regulating normal muscular and nerve activity.
• Contributes to nervous system balance — many people use magnesium as part of their evening routine, feeling that it contributes to overall relaxation.
• Easy to take — the supplement is available in various forms (capsules, tablets, powder, liquid), allowing flexibility based on personal preference.
• Suitable for vegetarians and vegans — in most cases this is a mineral-based product without animal-derived ingredients, but it’s always worth checking the label.

Dosage & Timing

Studies looking at magnesium supplementation have used a range of doses, but the Tolerable Upper Intake Level for supplemental magnesium is set at 350mg/day – this cap applies to supplements/medication only, not magnesium from food, since the kidneys handle excess dietary magnesium on their own. Many people take it with a meal to help minimize stomach upset, though it can be taken without food as well.

• RDA from food alone is roughly 400-420mg/day for men and 310-320mg/day for women (ages 19-51+)
• Supplemental intake is generally kept at or below 350mg/day unless a doctor advises otherwise
• Always check with a doctor or pharmacist before starting, especially if you take other medications or have kidney issues

Things to Watch Out For / Drawbacks

• Possible laxative effect — magnesium citrate is known to have a bowel-stimulating effect, and at high doses may cause diarrhea or stomach discomfort.
• Interaction with medications — magnesium may affect the absorption of certain medications (such as antibiotics or thyroid medications), so it’s important to consult a doctor or pharmacist before combining them.
• Not suitable for every medical condition — people with kidney problems should exercise extra caution and consult a doctor before taking magnesium supplements.
• Quality varies between manufacturers — as with any dietary supplement, it’s recommended to choose reputable brands and check for independent testing certifications (such as NSF or USP) where available.
• Personalized dosage — magnesium needs vary from person to person, so it’s best not to “guess” a dosage without professional guidance.

Who Is It For

Magnesium citrate may be suitable for people looking for additional nutritional support as part of a general health routine, for athletes interested in supporting muscle function, and for people experiencing fatigue or stress who want to try a supplement that may support an overall better sense of wellbeing. That said, people on regular medication, those with a medical background (especially kidney issues), and pregnant or breastfeeding women should consult a doctor before starting use. This supplement is not meant to replace a varied and balanced diet, but rather to serve as a supplement in cases of documented or suspected deficiency.

How to Choose a Quality Product

Citrate is one of the better-absorbed forms of magnesium, which is partly why it’s also more prone to a mild laxative effect compared to something like magnesium oxide. If gut comfort is your top priority, some people opt for magnesium glycinate instead – it’s worth comparing labels and forms before deciding which fits your needs.

Where to Buy

You can find a wide range of magnesium citrate supplements from various brands, in different dosages and forms (capsules, powder, dissolvable tablets). It’s recommended to compare brands, check the dosage per unit, and review the list of additional ingredients in the supplement before purchasing.

Buy on Amazon | Buy on iHerb

Disclaimer: The content in this article is intended for general informational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations. Before starting any dietary supplement, including magnesium citrate, it is recommended to consult a doctor, pharmacist, or qualified healthcare professional, particularly if you are taking regular medications or have any medical condition.