Note

This product contains 2 disputed ingredients: Grape Seed Extract (MegaNatural-BP), Quercetin Dihydrate. Evidence is mixed or doses are undisclosed — see the ingredient science section below for details.

SwissRX
SwissRX

Nitric Oxide

★★★★★
4.7 / 5·400 reviews at The FeedPerformance

Rating and review count from The Feed's customers. Pello community reviews are submitted separately on Pello.

$69for 30 servings· $2.30 per serving
Where to buy

As an Amazon Associate we earn from qualifying purchases. Pello may earn a commission on purchases made through some of these links at no extra cost to you. This never influences our scores or recommendations.Learn more

Used for: endurance athletes
Compare this product
SwissRX
SwissRXMid-range

29 products on Pello, mainly vitamin, probiotic and recovery.

View all 29 SwissRX products →
Strengths
  • Insufficient data
Watch out for
  • →2 disputed ingredients — check label
400
Reviews at The Feed
0
Quality standards
11
Key ingredients
Pello Score™

Below average

Notable weaknesses in one or more pillars

43
Science7/25
Transparency9/25
Value10/20
Athlete experience15/20
Quality2/10

Independent analysis No brand partnerships

AI Summary

Get an AI breakdown of this product
Based on this product's label, ingredients and rating data
Overall verdict
Key strengths
Weaknesses
Who it's best for

Sentiment breakdown

Loading community reviews…

Ingredient science

Cross-referenced with PubMed & Examine.com

✓No flagged ingredients detected
Vitamin C (as Magnesium & Zinc Ascorbate)180mg
~ Likely

Magnesium supports muscle and nerve function and sleep; many athletes fall short of the recommended intake. Supplementing helps mainly when intake is low. Glycinate and malate forms are well absorbed and gentle on the stomach.

Vitamin D3 (as Cholecalciferol)20mcg (800 IU)
✓ Proven

Vitamin D supports bone, muscle and immune health; deficiency is common in athletes who train indoors or live far from the equator.

Thiamine (as Thiamine Mononitrate)80mg
~ Likely

A B vitamin involved in turning food into energy; supplementing helps only if your diet is short on it.

Vitamin B12 (as Methylcobalamin)100mcg
~ Likely

Needed for red blood cells and nerve function; especially relevant for vegans and vegetarians.

Magnesium (as Magnesium Ascorbate & Oxide)126mg
~ Likely

Magnesium supports muscle and nerve function and sleep; many athletes fall short of the recommended intake. Supplementing helps mainly when intake is low. Glycinate and malate forms are well absorbed and gentle on the stomach.

Zinc (as Zinc Ascorbate)5.5mg
~ Likely

Zinc supports immune function and tissue repair; athletes lose some in sweat. Helpful if your diet is low in it.

Potassium (as Potassium Nitrate)140mg
~ Likely

An electrolyte involved in muscle and nerve function; sweat losses are much smaller than sodium's.

Proprietary Noxa24 Blend700mg
~ Likely

A blend whose individual ingredient amounts aren't disclosed on the label, so the dose of each can't be checked against the research.

L-Citrulline3g
~ Likely

Raises nitric oxide and may modestly improve high-intensity performance at 3–6g; lower doses are less studied.

Grape Seed Extract (MegaNatural-BP)200mg
Disputed

A grape antioxidant extract studied for blood pressure and circulation; evidence for performance is limited.

Quercetin Dihydrate200mg
Disputed

Plant antioxidants; studies on performance and recovery show small or inconsistent effects.

Quality standards

What these mean →

0 of 5 standards Pello tracks · No third-party banned-substance testing listed

Tested for sport

  • NSF Certified for Sport
  • Informed Sport
  • Cologne List

Food & sourcing

  • USDA Organic
  • Non-GMO Project Verified

Diet claims

  • Vegan: yes

    Brand or retailer label claim, not a certification.

  • Gluten-free: yes

    Brand or retailer label claim. In the US a gluten-free label means under 20 ppm gluten.

  • Dairy-free: yes

    Labeled vegan.

Certifications are as listed on the product's page at The Feed. NSF Certified for Sport is also checked against NSF's own database. Certifications can lapse, so check the certifier's search before you rely on one, especially if you're drug tested.

Transparency & Sources

70
Good transparency
0 certifications · 400 reviews at The Feed
The Feed
400 reviewsmedium

You might also like

Pello community reviews

Submitted by athletes on Pello, separate from the retailer rating at the top of the page.

No reviews yet — be the first!

Loading reviews...

As an Amazon Associate we earn from qualifying purchases. Pello Nutrition participates in affiliate programs and may earn commissions on purchases made through links on this site — this never influences our editorial scores or recommendations.Affiliate disclosure →