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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

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Showing 1-10 of 50 reviews
May 9, 2026
ScarlettH
5 out of 5 stars review

Convenient

This supplement has been a great addition to my routine. The powder mixes easily into water and has a light, pleasant taste. I’ve noticed it’s helped me feel more relaxed in the evenings and helped support muscle recovery after workouts. The 11 1/2 ounce container lasts a long time, making it a good value for the price. I also appreciate that it’s easy on the stomach compared to some magnesium capsules I’ve taken before. Overall, this is a convenient effective supplant and I would highly recommend it.

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May 4, 2026
RaitzaB
5 out of 5 stars review

Good product. Works perfectly

This product works pretty well! The flavor is not my favorite because I don’t really like cherry. But it’s not that bad I like to take it at night before bed and helps me with my mood and sleep. The dissolving is amazing pretty fast. And the packaging is great taste fresh.

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May 5, 2026
NicholeB
5 out of 5 stars review

So far so good! Nice flavor, natural ingredients �

I love the natural ingredients in this product! I don’t have a lot of experience with magnesium but my sleep does feel more restorative! The flavor is very strong (but tastes good) so either add more water or use less than a full scoop of strong flavor is not your bag. Container and scoop store well, no concerns there.

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May 2, 2026
TaraT
5 out of 5 stars review

It works!

I recently got into magnesium for a calming supplement after trying it many years ago and not feeling a difference. I finally gave it a fair shot and it works great! My body chemistry may have changed with age but it works so well for me now and this particular brand I was truly impressed with how effective it was. I am so happy it doesn't contain melatonin because I am not a fan of that and the grogginess that comes with it. The taste is decent and it mixes well with liquid and come with a scoop for easy measuring.

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Jun 6, 2026
MariaM
5 out of 5 stars review

Rest in a glass

There are many products on the market that claim to do everything that this product does and are not even close to actually doing it. This is one of the only magnesium supplements that actually does help me sleep. The L-Theanine is the star of the show and is what really helps in causing that restful sleep. The tart cherry flavor is palatable and quite refreshing. The powder dissolves quite quickly.

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May 4, 2026
MeganB
4 out of 5 stars review

Tasty cherry sleep tonic

This is one of the better tasting sleep drink I’ve tried. The cherry flavor is tasty, and it’s easy to scoop out and mix up! There is a little mineral deposit left in the glass, but it’s the same as other similar powder supplements. I recommend trying it!

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Apr 26, 2026
KimW
4 out of 5 stars review

Works well, tastes gross

Mixes in water easily, and dissolves well. It will last a long time, according to the expiration date on the bottom! It seems to work really well, but ma the taste and smell are awful.. it tastes like cherry cough syrup. I choked it down, and I slept great but it will likely not become a nightly routine for me, unfortunately

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May 5, 2026
SusanB
4 out of 5 stars review

Great magnesium source but start small

I received this magnesium sleep supplement from Members Mark free for testing and review purposes. I use a melatonin supplement for sleep and a magnesium supplement already, so I was excited to try this. Tart cherries already naturally contain melatonin. This has tart cherry extract, the amino acid L- theanine, and vitamin B6. The magnesium component has magnesium biglycinate chelate, citrate, and glycinate. Other ingredients include beet extract, malic acid, and stevia for sweetness. The container comes with a scooper, and directions say to use one scoop in 6-8 ounces of water. I recommend starting even smaller, and use at night, but not before bed. I did not find a difference in sleep, but it’s a good magnesium source. I think I reacted to the citrate form. I had to take medication to stop going to the bathroom, and I determined it’s best for me not to use this before bed. The cherry taste has a bitter aftertaste so I suggest blending it like a smoothie instead of shaking in a jar like I did.

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May 7, 2026
GreysonS
4 out of 5 stars review

Tastes great, mixes well, and feels easy to add to

I’ve been trying the Member’s Mark Magnesium Powder with L-Theanine & Tart Cherry for a few nights now. The flavor is really pleasant, and it mixes into water smoothly. I also appreciate that it doesn’t leave me feeling tired or groggy the next morning, which has happened with other sleep aid products. I haven’t noticed a dramatic change in my sleep yet, but I plan to keep using it to see if the effects build over time. Overall, it’s easy to take and enjoyable, and it feels like a nice addition to my nighttime routine. Nice storage container and well packaged.

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Apr 28, 2026
KaraH
3 out of 5 stars review

Not for me

This is a very decent sized portion for the price and did not taste bad, but unfortunately did not work for me. I slept hard but I felt hyperactive instead of relaxed. I wish this would have worked for me because I love sleep aids and sometimes need help in that area.

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