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Customer reviews for Member's Mark L-Theanine & Tart Cherry Magnesium Sleep Powder Supplement for
Member's Mark L-Theanine & Tart Cherry Magnesium Sleep Powder Supplement
3.9 out of 5 stars
stars
70 ratings66 reviews
  1. 5 stars51% (36)
  2. 4 stars19% (13)
  3. 3 stars10% (7)
  4. 2 stars4% (3)
  5. 1 star16% (11)

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Showing 41-50 of 66 reviews
Aug 13, 2026
Reviewer name: tinypeach
4 out of 5 stars
4 out of 5 stars review

Overall, worth a shot.

I really wanted to like this, it has all 3 magnesium supplements and it works fairly well but the taste is SUPER chalky. trust me I've tried mixing it with so many different flavors but it still tastes of mashed up sweeties with a light cherry cough syrup aftertaste. I would recommend using a sparing dose as well, it helped my cramps but had me going to the bathroom for hours and gave my bf nightmares.

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May 9, 2026
Reviewer name: anonymous
1 out of 5 stars
1 out of 5 stars review

Bring back the tablets

Bring back the member’s mark magnesium tabs!! This stuff is awful.

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May 11, 2026
Reviewer name: CherieN
5 out of 5 stars
5 out of 5 stars review

Great Flavor

I enjoyed the flavor of the magnesium powder and it was easy to dissolve. The supplement allowed me to fall asleep easier and I woke up refreshed.

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Jun 4, 2026
Reviewer name: DerkA
5 out of 5 stars
5 out of 5 stars review

Great sleep

Worked as discussed, actually worked wonders. For some reason I got great sleep with this compared to other products with the same ingredients

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Apr 18, 2026
Reviewer name: KristinB
5 out of 5 stars
5 out of 5 stars review

Tastes amazing and works even better

This is phenomenal. I didn’t realize Sam’s Club sore brands that made high-quality products. This magnesium will not only taste good but it’s a mixture of three different types which really helps me sleep and it taste good with no weird additives or junk in it.

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Jul 13, 2026
Reviewer name: anonymous
2 out of 5 stars
2 out of 5 stars review

Cough Syrup anyone?

As other reviewers have pointed out, it tasted just like cough syrup does… but I am not drinking this for taste, I am drinking it for sleep… so, I have found that tart cherry does in fact improve my sleep, which is a godsend, but this cough syrup taste, combined with the fact that you have to mix it with water and drink it, (getting up to pee in the middle of the night kinda cancels out the beneficial effect…) I will be sticking with tart cherry gummies for sure. If they made this tart cherry/L-theanine in a gummy, I would definitely try it. As a powder to down as a nightcap before bedtime, I'll pass.

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Jul 21, 2026
Reviewer name: anonymous
3 out of 5 stars
3 out of 5 stars review

Way too sweet, please make it without sweetener

Have taken it for only 1 night, it's way too sweet for my taste. There should be one without Stevia. Too soon to know if it'll work as I continue taking it, t did relax me but I didn't stay asleep all night, woke up a few times. I'll give an update it when I finish it.

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Apr 21, 2026
Reviewer name: DayliC
5 out of 5 stars
5 out of 5 stars review

The Member’s Magnesium Powder

The member’s Magnesium powder is a great option for relaxing before bedtime. It blends Magnesium with L-Theanine and restful sleep. Without melamine

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May 5, 2026
Reviewer name: MeriM
5 out of 5 stars
5 out of 5 stars review

Great addition to my routine for restful night

This is a real great supplement. It had a very mild taste. But for sure helps with the sleep. You wake up rested and energized. Love this product. Mild smell.

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May 31, 2026
Reviewer name: anonymous
5 out of 5 stars
5 out of 5 stars review

A must have for insomniacs lol

I’ve struggled with insomnia for yrs and this has so far been the best product to help out w deep sleep. I used to get about 2-4hrs of sleep and now i’m reaching the 6-8hrs of sleep, slowly going up. It took about a week for me to see the difference.

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