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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
91 ratings90 reviews
  1. 5 stars58% (53)
  2. 4 stars30% (27)
  3. 3 stars10% (9)
  4. 2 stars0% (0)
  5. 1 star2% (2)

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Showing 1-10 of 90 reviews
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
Oct 8, 2026
Reviewer name: JackieL
5 out of 5 stars
5 out of 5 stars review

Energy boost

[This review was collected as part of a promotion.] I am almost finished with my first bottle and have noticed I have more energy. Ive always struggled with my circulation and after maintaining a consistent dosage, I can honestly say I noticed improvements in my day to day. I will continue using this because I like the ingredients.

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
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 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
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: 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 2, 2026
Reviewer name: HeatherP
4 out of 5 stars
4 out of 5 stars review

Easy to swallow. Not stinky.

[This review was collected as part of a promotion.] If you like small easy to swallow vitamins this is it. This pill has a very low smell. It seems to absorb very well. No upset tummy issues after taking. Easy disposal of container when empty.

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045
Jul 7, 2026
Reviewer name: RachelW
3 out of 5 stars
3 out of 5 stars review

May work for some but not all

[This review was collected as part of a promotion.] Pills are somewhat large and you need to take 3 daily; may be off putting for people who have trouble swallowing large/multiple pills at once. They are solid tablets that won't leak like gel capsules. No aftertaste was noted or weird burps unlike fish oil supplements. My husband and I tried these and didn't notice much of a difference compared to using liquid beet root and eating other foods that increase nitric oxide. No noticeable increase in energy, blood pressure, and no changes in male sexual performance. This may work well for some people if eating nitric oxide boosting foods and/or swallowing pills is preferred to a liquid beet supplement.

Review from Healthy Directions
Helpful?3C0JE2VIKWZ920481068045