Thorne Magnesium Bisglycinate review

Thorne Magnesium Bisglycinate is the most thoroughly documented sleep magnesium on this list, and it is a powder rather than a pill. Each scoop holds 200mg of magnesium as magnesium bisglycinate, and the only other ingredients are citric acid and monk fruit concentrate. Thorne's product page calls it a formula that promotes restful sleep and muscle relaxation and suggests taking it 30 to 60 minutes before bedtime with or without food. The product carries NSF Certified for Sport, which Thorne says covers label claims and screening for nearly 300 banned substances, and the brand tests every ingredient for heavy metals, pesticides and microbes. The price is the weak point: $52 for 60 scoops is about $0.87 a serving, roughly four times the Doctor's Best tablet. It also has to be stirred into at least 8 ounces of water. People who like a warm or cold drink as part of a wind-down routine will find that a plus rather than a chore.

Who it is for

athletes who prefer a bedtime drink

Price

$52 for 60 scoops; FSA and HSA funds accepted through Truemed.

$52 /60 Scoop(s)
Quoted from the vendor pricing page on November 13, 2026.

Key features

• 200mg of magnesium as magnesium bisglycinate per scoop
• 60 servings per container
• NSF Certified for Sport
• Other ingredients are only citric acid and monk fruit concentrate
• Thorne suggests taking it 30 to 60 minutes before bedtime for sleep

Strengths and weaknesses

• Strength: Two-ingredient powder besides the magnesium, sweetened with monk fruit
• Strength: Thorne tests each ingredient for identity, purity and potency, including heavy metals
• Strength: Gluten, dairy and soy free
• Weakness: $52 is about $0.87 per serving, the second-highest cost per dose here
• Weakness: Powder has to be mixed with at least 8 ounces of water
• Weakness: Thorne warns gas, bloating or diarrhea may occur in some people

Key facts

• Form: Magnesium bisglycinate powder
• Magnesium per serving: 200mg (1 scoop)
• Servings: 60
• Certification: NSF Certified for Sport
• Price per serving: About $0.87

Where it ranks

Thorne Magnesium Bisglycinate is No. 3 in our Best Magnesium Supplements verdict.