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Upfront L-Glutamine
Photo: Upfront's website
Upfront · Amino acids · no. 1 in amino acids

L-Glutamine: what buyers say

7.4/10Supplist score from 181 reviews read · ★4.7 in the shop
How the score works

Well-dissolving, cheap glutamine; the taste disappoints many buyers.

from €19.00
See price at Upfront★4.7 from 190 reviews in the shop

A plain link to the shop; we get nothing for it. Supplist is owned by simpliSELF B.V., which also sells its own supplements.

AI (Claude) summary of 181 reviews from Upfront's web shop, read on 16 October 2026, spot-checked by people. We don't verify ourselves that reviewers are buyers. How we use reviews

What buyers like

  • +Many buyers say it dissolves quickly and without clumps. 42×
  • +Some taste little of it and mix it into a shake, oats or lemonade. 28×
  • +Reviewers find the value for money good, sometimes the cheapest on the market. 10×

What buyers complain about

  • –Many buyers find the taste or aftertaste nasty or bitter. 32×
  • –Two buyers report stomach cramps or stomach and gut complaints. 2×
  • –A few bags arrived open, leaving the box full of powder. 2×

Watch out

  • !Many buyers mix it with lemonade or a shake because of the bitter aftertaste. 11×
  • !A few buyers report stomach cramps or stomach and gut complaints. 2×
  • !A few bags weren't properly closed on delivery. 2×

The number is how many of the 181 reviews we read mention this. We only show points about taste, mixing, packaging, price and reported complaints, not about effects.

Price on 16 October 2026
€19.00

Free shipping from €59, according to Upfront's homepage.

Prices from Upfront's website, including VAT, excluding shipping. The shop's price applies.

Good forPeople who want a cheap glutamine to mix into a shake or lemonade.
Less suited toPeople who are sensitive to a bitter aftertaste and want to drink it plain in water.
How the score of 7.4 is made
AI verdict on the reviews8.2
The AI's verdict on 181 reviews read: how often recurring pros and cons come up.
Buyer consensus6.4
How much buyers agree with each other. Low: read the downsides carefully.
Shop rating, compared with other products5.2
★4.74 in the shop · 3.7% give 1–3 stars. Almost everything sits at 4.3 to 4.9 stars; we stretch that out against other products on the same review system.

How the score works

Frequently asked questions

What do buyers think of Upfront L-Glutamine?

Well-dissolving, cheap glutamine; the taste disappoints many buyers. Supplist score 7.4 out of 10, number 1 in amino acids.

What do buyers like most?

Many buyers say it dissolves quickly and without clumps. (42 of 181 reviews read)

What's the most common complaint?

Many buyers find the taste or aftertaste nasty or bitter. (32 of 181 reviews read)

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Reviews read on 16 October 2026; prices checked on 16 October 2026. Prices in the shop may have changed since. A summary of what buyers say, not medical advice.