Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
Customer reviews for Doctors' Preferred Nitric Oxide Advantage, Blood Flow, 90 Caplets for
Doctors' Preferred Nitric Oxide Advantage, Blood Flow, 90 Caplets
4.4 out of 5 stars
stars
89 ratings89 reviews
  1. 5 stars58% (52)
  2. 4 stars30% (27)
  3. 3 stars10% (9)
  4. 2 stars0% (0)
  5. 1 star1% (1)

Member photos

  • +106 images
Sort by |
Showing 1-10 of 89 reviews
Aug 18, 2026
Reviewer name: anonymous
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Just waiting to see my kidney results so far so good Daphne feeling better just ordered another bottle. Wish you could give me a deal on them.

Review from walmart.com
Helpful?3C0JE2VIKWZ920481068045
Sep 17, 2026
Reviewer name: MeganB
5 out of 5 stars
5 out of 5 stars review

Great for workout and blood pressure

[This review was collected as part of a promotion.] My husband and my son are both very into the gym/strength training and my husband thinks these are fantastic— recovering faster and working out harder. He also has been working to stay off of blood pressure medication and just had a check up after taking these every day for a month and was given a queen bill of health.  We have already ordered another bottle and they are affordable.

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 11, 2026
Reviewer name: RebeccaG
5 out of 5 stars
5 out of 5 stars review

All around good for your health

[This review was collected as part of a promotion.] This product works very well. It improves blood flow 4x better then beet root. It helps with your heart. Definitely noticed having more energy. There is no bad smell or taste. It absorbs very well. The ingredients are all natural which is a plus for me. You only take 3 tablets once daily with or without food. A must in your daily routine

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 10, 2026
Reviewer name: WhitneyR
5 out of 5 stars
5 out of 5 stars review

definitely a supplement I plan to continue taking 🙌🏼

[This review was collected as part of a promotion.] great product, overall happy with the increased notice of energy without the crash. the recommended dosage is 3 tablets once daily which is reasonable but I think even 2 a day would still work for me. they were easily digestible and taste wasn't bad either 😊

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Oct 1, 2026
Reviewer name: KiahA
5 out of 5 stars
5 out of 5 stars review

Great addition to daily routine

[This review was collected as part of a promotion.] I have really liked taking this supplement. It's super easy to take and easy to incorporate into my daily routine. I like having this as part of my health and wellness routine and have noticed that I feel better and more energized

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 11, 2026
Reviewer name: JulieA
5 out of 5 stars
5 out of 5 stars review

Mental boost & increased blood flow

[This review was collected as part of a promotion.] I've been using this vitamin for a few weeks and have to say I really like it. It actually does give me a subtle mental boost and helps keep me focused. I like to take it about an hour or two before I work out to increase blood flow. This is something I will likely continue to take as I enjoy the benefits.

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 11, 2026
Reviewer name: JamieC
4 out of 5 stars
4 out of 5 stars review

! Does what it claims...Noticeable results!

[This review was collected as part of a promotion.] I am impressed with these Nittric Oxide supplements and have noticed improved circulation, especially in my legs, since Ii started taking these daily. The oblong coated ablets are easy to swallow, which I appreciate. The only thing I don't care for is the lingering taste, but their effectiveness definitely outweighs this. I plan to continue taking these and will purchase when I run out. Highly recommend.

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 27, 2026
Reviewer name: SonyaW
4 out of 5 stars
4 out of 5 stars review

No afternoon crash

[This review was collected as part of a promotion.] I have been taking this on and off for over a month and I can definitely notice the days I forgot to take it. The days I take it I feel that my energy level is higher and I don't need that afternoon nap. I have taken this with food and without food and I haven't noticed a difference. It does not upset my stomach. Some pills leave a bad taste in your mouth and I haven't noticed anything with this one. I am normally one that has a hard time swallowing pills but I do not with these and I take all 3 at once they go down smoothly. Lol!

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 21, 2026
Reviewer name: TeriC
4 out of 5 stars
4 out of 5 stars review

Out performs beets for blood flow

[This review was collected as part of a promotion.] I have been taking these for a little bit now. It's kinda hard to tell how effective they are since it hasn't been a super long period of time they're just tablets so they're pretty easy to take. I want to keep taking them since they help with blood flow and vascular health 

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Aug 18, 2026
Reviewer name: MeganR
3 out of 5 stars
3 out of 5 stars review

Nitric Oxide Advantage

[This review was collected as part of a promotion.] I have been using Doctor's Preferred Nitric Oxide Advantage and have had a pretty good experience. It's easy to take, and I like that's it's formulated to support circulation and overall cardiovascular health. I haven't noticed anything dramatic, but I do feel like it's a worthwhile addition to my daily supplement routine. Overall, I'm satisfied with it and would consider purchasing it again.

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045