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expiredNavy-Wife | Staff posted Jun 23, 2026 7:47 AM
Select Prime Member Accounts: 90-Ct Sports Research 160mg Magnesium Glycinate
$8.80
$18
51% off
& More w/ S&S + Free S&Hat Amazon
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Update: This popular deal is still available.
Sports Research via Amazon has for Select Prime Member Accounts: Sports Research Supplements on sale listed below when you clip the 20% off coupon found on the product page and check out via Subscribe & Save for discount. Shipping is free.
Thanks to Deal Hunter Navy-Wife for finding this deal
Note, product will be sold by Sports Research and fulfilled by Amazon
Available Items (Prices listed below are after 20% off coupon savings and 10% off Subscribe & Save discount)
Sports Research via Amazon has for Select Prime Member Accounts: Sports Research Supplements on sale listed below when you clip the 20% off coupon found on the product page and check out via Subscribe & Save for discount. Shipping is free.
Thanks to Deal Hunter Navy-Wife for finding this deal
Note, product will be sold by Sports Research and fulfilled by Amazon
Available Items (Prices listed below are after 20% off coupon savings and 10% off Subscribe & Save discount)
Editor's Notes
Written by Wiznaz | Staff- About this Deal
- Coupons are typically limited to one per account.
- Must clip the coupon found on product page for discount to apply at final checkout.
- Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.
- About this Store:
- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more
- If you're not a student, there's also a free 1-Month Amazon Prime trial available
- You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.
Community Notes
About the Poster
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Community Notes
About the Poster
Update: This popular deal is still available.
Sports Research via Amazon has for Select Prime Member Accounts: Sports Research Supplements on sale listed below when you clip the 20% off coupon found on the product page and check out via Subscribe & Save for discount. Shipping is free.
Thanks to Deal Hunter Navy-Wife for finding this deal
Note, product will be sold by Sports Research and fulfilled by Amazon
Available Items (Prices listed below are after 20% off coupon savings and 10% off Subscribe & Save discount)
Sports Research via Amazon has for Select Prime Member Accounts: Sports Research Supplements on sale listed below when you clip the 20% off coupon found on the product page and check out via Subscribe & Save for discount. Shipping is free.
Thanks to Deal Hunter Navy-Wife for finding this deal
Note, product will be sold by Sports Research and fulfilled by Amazon
Available Items (Prices listed below are after 20% off coupon savings and 10% off Subscribe & Save discount)
Editor's Notes
Written by Wiznaz | Staff- About this Deal
- Coupons are typically limited to one per account.
- Must clip the coupon found on product page for discount to apply at final checkout.
- Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.
- About this Store:
- Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more
- If you're not a student, there's also a free 1-Month Amazon Prime trial available
- You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.
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Top Comments
For Sports Research Magnesium Glycinate, the evidence points toward it being a true magnesium glycinate chelate rather than a buffered glycinate heavily diluted with magnesium oxide.
The key clue is the ratio on your label:
1,441 mg magnesium glycinate chelate
160 mg elemental magnesium
= 11.1% elemental magnesium
Buffered magnesium glycinate products that contain substantial magnesium oxide usually have a much higher elemental magnesium percentage because magnesium oxide is about 60% magnesium by weight. For example, a product containing significant oxide might provide 200–300 mg magnesium from only ~500–800 mg of material.
Sports Research instead requires 1.44 grams of chelate to deliver 160 mg magnesium, which is consistent with a relatively low-magnesium, amino-acid-chelated material.
A few additional observations:
Sports Research states that the product uses magnesium glycinate chelate and is not marketed as a "buffered" glycinate.
The label does not list magnesium oxide separately, which it generally would if it were being added as a distinct ingredient.
The 11.1% magnesium content is actually lower than the theoretical ~14% for anhydrous magnesium bisglycinate, suggesting the raw material likely contains additional glycine, water, or other components of the chelate matrix rather than oxide.
Best estimate
Based on the label and the product's positioning:
Magnesium oxide, if present at all, is probably a very small fraction of the total magnesium.
I would not assume any meaningful amount of the 160 mg comes from oxide.
A reasonable working assumption is that nearly all of the 160 mg elemental magnesium is coming from glycinate-chelated magnesium.
One caveat: supplement labels in the U.S. don't require manufacturers to disclose whether a chelated mineral raw material contains a small amount of residual oxide used during manufacturing. So it is impossible to prove the oxide content is exactly zero without a certificate of analysis from the manufacturer.
For practical purposes, however, Sports Research Magnesium Glycinate appears much closer to a fully chelated glycinate product than to the inexpensive "buffered glycinate" products that rely heavily on magnesium oxide.
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19 Comments
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For Sports Research Magnesium Glycinate, the evidence points toward it being a true magnesium glycinate chelate rather than a buffered glycinate heavily diluted with magnesium oxide.
The key clue is the ratio on your label:
- 1,441 mg magnesium glycinate chelate
- 160 mg elemental magnesium
- = 11.1% elemental magnesium
Buffered magnesium glycinate products that contain substantial magnesium oxide usually have a much higher elemental magnesium percentage because magnesium oxide is about 60% magnesium by weight. For example, a product containing significant oxide might provide 200–300 mg magnesium from only ~500–800 mg of material.Sports Research instead requires 1.44 grams of chelate to deliver 160 mg magnesium, which is consistent with a relatively low-magnesium, amino-acid-chelated material.
A few additional observations:
- Sports Research states that the product uses magnesium glycinate chelate and is not marketed as a "buffered" glycinate.
- The label does not list magnesium oxide separately, which it generally would if it were being added as a distinct ingredient.
- The 11.1% magnesium content is actually lower than the theoretical ~14% for anhydrous magnesium bisglycinate, suggesting the raw material likely contains additional glycine, water, or other components of the chelate matrix rather than oxide.
Best estimateBased on the label and the product's positioning:
- Magnesium oxide, if present at all, is probably a very small fraction of the total magnesium.
- I would not assume any meaningful amount of the 160 mg comes from oxide.
- A reasonable working assumption is that nearly all of the 160 mg elemental magnesium is coming from glycinate-chelated magnesium.
One caveat: supplement labels in the U.S. don't require manufacturers to disclose whether a chelated mineral raw material contains a small amount of residual oxide used during manufacturing. So it is impossible to prove the oxide content is exactly zero without a certificate of analysis from the manufacturer.For practical purposes, however, Sports Research Magnesium Glycinate appears much closer to a fully chelated glycinate product than to the inexpensive "buffered glycinate" products that rely heavily on magnesium oxide.
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I always understood that its not for energy, but the opposite that its good to take before bed as it can help you sleep, relaxes your muscles, and reduces stress with a mild calming effect, at least for people that are somewhat low.
Most people don't need most supplements, but if you are heavy cutting (like I'm on 1300 calories a day as a 6' male for weight loss), then its usually good to take some key supplements that you may be low on nutritionally.
If you already regularly eat almonds, avocados, salmon, spinach and the like, then you probably aren't low on magnesium. If you don't or are in a calorie deficit, then probably worthwhile to take.
I always understood that its not for energy, but the opposite that its good to take before bed as it can help you sleep, relaxes your muscles, and reduces stress with a mild calming effect, at least for people that are somewhat low.
Most people don't need most supplements, but if you are heavy cutting (like I'm on 1300 calories a day as a 6' male for weight loss), then its usually good to take some key supplements that you may be low on nutritionally.
If you already regularly eat almonds, avocados, salmon, spinach and the like, then you probably aren't low on magnesium. If you don't or are in a calorie deficit, then probably worthwhile to take.
https://www.amazon.com/dp/B07ZD7R...detai
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