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forum threadoffbeat posted Jul 06, 2025 09:10 PM
forum threadoffbeat posted Jul 06, 2025 09:10 PM

Magnesium L-Threonate, 2000 mg (135 count) $26.99 Costco B&M

Costco Wholesale
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Heads up:
Sports Research Magtein Magnesium L-Threonate, 2000 mg, 135 Veggie Capsules
rung up $33.99 (local B&M warehouse), minus promo -$7.00 (valid through 7/20)
= $26.99 + tax


Compare:

Costco Online shows MSRP $37.99 - 7.00 = 30.99
https://www.costco.com/sports-res...17780.html

Costco via Instacart shows $36.69 - 7.00 = 29.69
https://sameday.costco.com/store/...e-capsules
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Deal Details
Community Notes
About the Poster
Heads up:
Sports Research Magtein Magnesium L-Threonate, 2000 mg, 135 Veggie Capsules
rung up $33.99 (local B&M warehouse), minus promo -$7.00 (valid through 7/20)
= $26.99 + tax


Compare:

Costco Online shows MSRP $37.99 - 7.00 = 30.99
https://www.costco.com/sports-res...17780.html

Costco via Instacart shows $36.69 - 7.00 = 29.69
https://sameday.costco.com/store/...e-capsules

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6 Comments

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Jul 06, 2025 09:30 PM
4,811 Posts
Joined Jun 2015
Jul 06, 2025 09:30 PM
jtree1Jul 06, 2025 09:30 PM
4,811 Posts
What are the benefits of this vs the Kirkland Signature Magnesium Citrate - https://sameday.costco.com/store/...els-270-ct
Jul 06, 2025 10:06 PM
2,835 Posts
Joined Nov 2014
Jul 06, 2025 10:06 PM
ValueRangerJul 06, 2025 10:06 PM
2,835 Posts
Quote from jtree1 :
What are the benefits of this vs the Kirkland Signature Magnesium Citrate - https://sameday.costco.com/store/...els-270-ct
Isn't citrate one of the highest forms of magnesium?
Pro
Jul 06, 2025 10:13 PM
5,782 Posts
Joined Nov 2012
Jul 06, 2025 10:13 PM
George_P_Burdell
Pro
Jul 06, 2025 10:13 PM
5,782 Posts
Quote from ValueRanger :
Isn't citrate one of the highest forms of magnesium?
depends biglycinate is gentle on gut
L-Threonate is sleep enhancement instead of melotanin for some

https://ai.hubermanlab.com/s/1035...246e3ebd4c
Jul 07, 2025 01:09 AM
4,811 Posts
Joined Jun 2015
Jul 07, 2025 01:09 AM
jtree1Jul 07, 2025 01:09 AM
4,811 Posts
Quote from ValueRanger :
Isn't citrate one of the highest forms of magnesium?
That is what I found when I did research a couple years ago before buying some magnesium supplements. However, at that time, I did not know about the supplement in this post.
Jul 07, 2025 07:39 PM
1,442 Posts
Joined Jul 2007
Jul 07, 2025 07:39 PM
audiophanJul 07, 2025 07:39 PM
1,442 Posts
Quote from jtree1 :
What are the benefits of this vs the Kirkland Signature Magnesium Citrate - https://sameday.costco.com/store/...els-270-ct
Quote from ValueRanger :
Isn't citrate one of the highest forms of magnesium?
Citrate for muscle relaxation/recovery, also used to help with constipation.
Threonate crosses blood/brain barrier, able to be absorbed by neural tissue. Used for sleep/neural performance.

Source: Huberman Lab podcast
Original Poster
Jul 07, 2025 09:30 PM
1,082 Posts
Joined Dec 2005
Jul 07, 2025 09:30 PM
offbeat
Original Poster
Jul 07, 2025 09:30 PM
1,082 Posts
I like using Magnesium Glycinate.... this deal is the first time using Threonate.


Saw this populate from Google Assist:

Overview of Magnesium Threonate and Glycinate
Magnesium threonate and magnesium glycinate are two popular forms of magnesium supplements, each with unique benefits and uses.

Magnesium Threonate
Best Use: Primarily supports brain health and cognitive function.
Absorption: Easily crosses the blood-brain barrier, enhancing magnesium levels in brain cells.
Benefits:
May improve memory, learning, and attention.
Helps with sleep by calming the mind.
Recommended Timing: Best taken in the evening to aid sleep and cognitive enhancement.

Magnesium Glycinate
Best Use: Effective for resolving magnesium deficiencies and promoting overall health.
Absorption: Highly bioavailable, meaning it is easily absorbed by the body.
Benefits:
Supports sleep quality and reduces anxiety.
May help regulate blood sugar and improve mood.
Recommended Timing: Can be taken any time of day, often in the evening for sleep support.

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