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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 11-20 of 42 reviews
May 11, 2026
AntonioA
4 out of 5 stars review

Helps with sleep

I've been pleasantly surprised with this magnesium sleep powder. The flavor is actually pretty enjoyable and mixes well without being gritty or chalky. I noticed it helped me wind down at night and made it easier to relax before bed, which has definitely helped my sleep routine feel more consistent. I also woke up feeling less groggy than I expected. The only reason I'm not giving it a full 5 stars is that I wish the effects kicked in a little faster, but overall it's been a great addition to my nighttime routine and I'd buy it again.

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May 26, 2026
SarahH
5 out of 5 stars review

Calming, great ingredients

I'm really enjoying this supplement! There is a simple ingredient list and they are beneficial in supporting restful sleep and calming. This is meant to be relaxing and calming, it's not a sedative. Don't expect to be knocked out cold! But I definitely find this calming, kinda like how some people have their chamomile tea or lavender spray. This is along those lines of support in my opinion. It mixed into water great, no clumps. Tastes pleasant. No artificial flavors or colors either. I will continue using this, even during the daytime when I am feeling frazzled. I love that it has 200mg l-theanine as well, and several different forms of magnesium.

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May 23, 2026
ShannonS
4 out of 5 stars review

Seems to work well, too soon

I take magnesium daily to help with sleep and regularity and this product seems to be working well. I've only used it for a week now so it's really too soon to tell. It is a little gritty and doesn't dissolve very well. I do think it's easier just to take a pill.

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May 29, 2026
ShinesS
5 out of 5 stars review

Member's Mark Magnesium powder dietary supplement

I've been using this magnesium powder for a few weeks now, and overall I think it works really well. The biggest downside for me is definitely the taste — the cherry flavor is pretty tart and a little stronger than I expected. It's not terrible, but if you're sensitive to sour flavors you may not love drinking it plain with water. I found it tastes a bit better with extra cold water or ice. That being said, the results have been worth it for me. I've noticed that I feel calmer and more relaxed before bed, and my sleep quality has improved a bit since taking it consistently. I also like that it comes in powder form because it's much easier than swallowing large magnesium pills. Also the container has enough quantity with a scoop as well. Another small negative is that it doesn't dissolve perfectly every single time, so you have to mix it well. But for the price and the benefits, I still think it's a great value. If you can get past the tart flavor, it's definitely worth trying for relaxation and sleep support. This product was sent to me by Influenster for my honest review.

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May 30, 2026
SaritaS
5 out of 5 stars review

Great drug free alternative

This is a great option if you have problems with falling asleep and want a melatonin free option. It's easy to mix and dissolves easily. Has a nice fruity flavor and sometimes I'm able to mix it into my smoothie or tea in the evening. I love that it comes with its own scoop and that it's a healthier drug free formula

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Apr 19, 2026
KadenS
5 out of 5 stars review

Best drink before bed 🍒⭐️

This product smell EXACTLY like cherries! 🍒 the consistency is spot on. The serving size is perfect for right before you’re supposed to go to bed. The dissolvability is spot on. It is not grainy at all, and the frequency is amazing! 10/10 ⭐️⭐️⭐️⭐️⭐️

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Apr 18, 2026
KristinB
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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Apr 19, 2026
TessB
3 out of 5 stars review

Not my favorite flavor

One scoop definitely gives you a strong drink. I don’t love the flavor; sort of tastes like medicine. Wondering if adding more water would make it better so it’s less strong. Definitely settles at the bottom so you have to stir it multiple times (never fully dissolved). We’ll see how effective it is.

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May 4, 2026
AbbeygailF
5 out of 5 stars review

Amazing product

This product works so well , and the instructions are super clear and easy to understand . At first the small bottle contains a lot of product and it comes with a very cute scoop to get the product of of the container .

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Apr 30, 2026
MeganR
4 out of 5 stars review

Helps fall asleep without feeling groggy

This cherry powder really helped me fall asleep gently and wake up rested. The taste is a little medicinal, but not intolerable. It blended nicely into my water and dissolved completely, leaving no chalky texture. It is definitely worth the price.

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