Optimum Nutrition Electrolyte Powder, Forest Berries Ready-to-Mix Formula, Sodium Magnesium Potassium Food Supplement for Wor
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
Optimum Nutrition Electrolyte Powder, Forest Berries Ready-to-Mix Formula, Sodium sits in our diet & nutrition listings, where we rank by how buyers actually rate a product rather than by brand. The manufacturer says: Delivers 400 mg sodium, 113 mg magnesium* and 300 mg potassium** to support muscle function for intense training. This electrolyte powder contains magnesium, which contributes to normal muscle function and electrolyte balance. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.1 out of 5 from 717 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Optimum Nutrition
- Amazon rating
- 4.1 / 5 from 717 ratings
- vs Diet & Nutrition
- 0.3 below the category median of 4.4
- Rank in category
- 43 of 50 rated diet & nutrition we track
- Price position
- Among the cheaper options (category spans £2.50 to £96.90)
- How proven
- Moderate review volume
How it compares in Diet & Nutrition
Across the 50 rated diet & nutrition products we track, the typical score is 4.4 out of 5. This one sits at 4.1, which is in the bottom quarter of the category. That does not make it a bad buy, but there are better-rated alternatives on the same shelf, so it needs another reason to earn your money.
It carries 717 ratings against a category median of 2,629. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the lower third of a category running from £2.50 to £96.90, where the midpoint is about £14.99. Buying at the cheap end is fine when the rating holds up; check the specifics below rather than assuming the saving is free.
Worked out from the 50 diet & nutrition products in our catalogue, not from the brand's own claims. How we rank →
Key features
- BALANCED ELECTROLYTE FORMULA: Delivers 400 mg sodium, 113 mg magnesium* and 300 mg potassium** to support muscle function for intense training
- MAGNESIUM SUPPLEMENT FOR ATHLETES: This electrolyte powder contains magnesium, which contributes to normal muscle function and electrolyte balance
- POTASSIUM ELECTROLYTE SUPPLEMENT: This electrolyte replacement powder includes potassium to help support normal muscle function.
- ELECTROLYTE DRINK MIX: A refreshing electrolyte powder for workouts, pre-workout or post-exercise; mix 8 g with 450 ml water for easy rehydration
- TRUSTED BRAND: From Optimum Nutrition, known for sports nutrition for over 35 years, this sodium-magnesium-potassium supplement supports active training
- *Magnesium contributes to normal muscle function & electrolyte balance
