Qstar

Love the taste: fruity and slightly bitter. Not sweet at all. Perfect.

I am able to concentrate better, mobilize more strength during workouts and have less fatigue.

BUT I am not sure if it is related to Qstar as I changed lots of my routines: digital detox during evenings and mornings, daily body activation workout in the morning and more intense training during full workouts.

My main con is that it is extremely hard for me understand wether the impact comes from Qstar or not. I am also not sure if there are any side-effects long-term.

I was invited to a free product test. Regardless my doubts above, I now decided to continue using it and became a paying customer.

- Clean Formula
- Well-thought-out ingredients
- I can tolerate it on an empty stomach, which is rare
- Made in Germany
- A lot of NR

- Very unpleasant taste
- Even though the price itself is fair, 70 euros a month is simply a lot of money. But that applies to all products, from AG1 to Biogena One.
- Personally, I still need omega-3 and iron. I know that omega-3 often tastes bad in such mixes, but this means I have to continue taking additional supplements. So it's a foundation and not an all-in-one drink (which they don't promise it to be).

- Add Longevity ingredients to my daily stack

Convenient all-in-one powder format replaces multiple pills.

-Easy to mix with water and consume before breakfast.
- Covers daily multivitamins and some minerals.
- Includes key NAD⁺ precursors, antioxidants, glycine, and creatine.
- Far more enjoyable and streamlined than a traditional pill routine.

- Taste is acceptable but not particularly enjoyable.
- Many ingredients are underdosed, especially minerals like magnesium and calcium.
- Some ingredients feel non-essential or low compared to research-backed performance and longevity doses.
- Effects are subtle and difficult to assess in everyday life; may require complementary supplements for strong energy or longevity results.

- Main goal: Improve daily energy with a convenient, single-serving supplement.
- QStar succeeds in simplifying the routine, but users seeking measurable energy or performance effects may need higher doses or additional products.

I like the idea of a multi-ingredient complex supplement that aims to cover several health goals in one product. Taking one sachet per day is clearly convenient and lowers the barrier for consistency.

And I think, the chosen ingredients make sense regarding the stated goals: energy, focus, performance, regeneration, muscle support, metabolism, cognition, cellular protection, and longevity. (Which is an ambitious and wide scope for a single formula.)

The dosages seem to be absolutely safe from my perspective! Without unnecessary or even harmful fillers! (And if you look deeply into the list of ingredients on the package, you will find some extra ingredients that are not promoted but could also be effective if I knew the dosage: inulin, ginger and curcumin for the color.)

For most of the ingredients they use forms that have a good bioavailability and effect. For the following ingredients I finally found the specific forms in the list of ingredients on the package, not on the website:
* Niacin (nicotinamide, no flush)
* Magnesium (taurate, which is good for heart and blood vessels)
* Zinc (bisglycinate, which is very bioavailable)
* Vitamin B12 (methylcobalamine, which is an active form)

I also appreciate that most goals are addressed by multiple complementary ingredients rather than by single “hero” compounds. In theory, this allows for synergistic effects across pathways.

I also consider it a positive that citrulline-malate is included and not L-arginine, as citrulline is more stable and more effective at raising nitric oxide via arginine recycling.

It tastes quite ok for me. And it's easy to dissolve in water. (This matters for daily compliance.)

From my personal perspective I consider some ingredients to be too low in dosage to have a specific effect on their own, based on human studies: quercetin is at the lower range of dosages used in studies, creatine maybe ok as maintenance dosage with focus on muscles but afaik way too low to impact the brain, taurine is also better than nothing but lower than used in studies, as are Q10, citrulline, inositol, resveratrol, and EGCG. Magnesium anyway. (Vitamin D3 is also too low for most people in Europe, which may suggest a false sense of security.)

It may be that there are synergies between EGCG, OPC, quercetin, and resveratrol, for example, so that the total amount of the combination makes sense for many people after all. (Under the assumption that the ingredients work synergistically and are not competing or blocking each other – but I'm not deep enough into these specific interactions.)

For some ingredients, the chemical form is not specified, which is crucial for bioavailability and effect:
* Coenzyme Q10 (ubiquinone vs. ubiquinol)
* Vitamin K2 (MK-4 vs. MK-7)

For vitamin E, the form is stated: it's purely alpha-tocopherol, not a balanced tocopherol/tocotrienol complex.

If I am allowed to think beyond this formula: In terms of cognitive performance and focus, I would add sth. like citicoline for concentration and vitamin B6 (P5P) for neurotransmitters, maybe L-theanine for calm focus, and possibly L-tyrosine for drive. And I wonder if vitamins B1 and B2 wouldn't also make sense to feed the mitochondria for energy production. And maybe some NAC would work synergistically with glycine as both supply the rate-limiting precursors for glutathione production.

It's said to take it in the morning on an empty stomach – I wonder if e. g. Vitamin E, D and K (which are fat soluble) are good enough absorbed without any extra fat.

And taking L-tryptophan, taurine, glycine and inositol in the morning could be too calming for some people – I'd take these substances usually before bed! (Great, that the company is actively asking for user feedback on that.)

I also wonder if it's a good idea to take antioxidants like vitamin C, vitamin E, EGCG, OPC in the morning (assumption: before training), as reactive oxygen species are required for mitochondrial and muscle signaling.

But these are typical trade offs:
* Convenience (one sachet a day) versus optimization (every ingredient individually chosen, dosed and timed based on personal data and goals).
* Safety (for every possible user) vs. impact (on specific situations and goals).

I tested the product from my perspective as a Health Coach and expert in micronutrients. Personally I usually don't take any products with multiple ingredients (except for a hand picked vitamin B complex) as I supplement very individualized, based on regular blood tests.

Someone who is healthy and looks for an easy to use and safe and convenient supplement with a broad scope, might get a good deal with Qstar.

In general I think it's great that Qstar uses and combines ingredients that aren't commonly found elsewhere. I also love that they avoid unnecessary fillers and additives, well done!

I especially like the effect during my gym sessions and use Qstar as a pre-/intra-workout-booster. Definitely helps me during my sets and I feel a slight and comfortable energy uplift 💪🏻

Of course, using clean ingredients comes with some trade-offs regarding taste and solubility. While the unique flavor isn't exactly delicious, it’s perfectly manageable for me (especially when I know that there are no unecessary additives). However, the solubility in water is a bit of an issue that I wanted to highlight.

Testing an all-in-one longevity focused supplement.

I like the brand, the concept, and the quality. I also like the taste and solubility—but I can understand why some people might find it not sweet enough. I particularly like the fact that it doesn't contain any large amounts of sweeteners or aroma. Using it as part of my daily longevity ritual has been a good experience and has helped me drink enough water. I also like the fact that it helps regulate insulin levels.

As a basic supplement (something like a default backup), it's perfectly fine, but if you look at the ingredients, there's probably too little of many things. For example, I take 10g of creatine instead of 3g per day, and I don't think zinc is that important as a permanent supplement; I would rather take it in higher doses specifically for infections. B12 is great for me as a vegetarian, but as someone who eats meat regularly, it's probably unnecessary. Something in the drink is staining my shaker (looks like turmeric) - just good to know.

Staying fit and healthy with a basic daily longevity all in one supplement and additional supplements on top

Convenient all in one solution

Great taste with ginger, curcuma / orange

Made in Germany

Covers many basic nutrients

For people looking to supplement a basic setup this can be ideal

I don’t think it’s best to use a one size fits all package

Still prefer to blood test and supplement exactly what I need

No effect realized in day to day trial period BUT I am already sleeping enough, eating healthy, hydrating well and doing sports. Probably hard for any supplement to boost how I feel :-)

I was invited to do this product test

To be frank it would have been more clever to do a blood test before and after to really assess this products effectiveness. Unfortunately I didn’t and as I didn’t feel any changes in my day taking this supplement I can only rate with a max of 3 stars

- Very convenient all-in-one approach

- Good solubility and acceptable taste for daily use

-Super convenient for (business) travel thanks to small, ready-to-use single-serve packs

- Noticeable improvement in daytime energy stability and mental clarity

- Reduced afternoon energy dip and caffeine reliance

- Fits well into a busy lifestyle with limited mental bandwidth

- Not individualized (no adjustment for age, activity, body composition, biomarkers)

- Effects are supportive rather than transformative

- 30 days is too short for a true longevity or healthspan evaluation

- Hard to fully assess impact without stopping all other supplements

I train 6x per week, focus on a balanced diet and quality sleep (within the limits of full-time work and being a father of two young kids). Before QSTAR, I supplemented with creatine, vitamin D3, vitamin C + zinc, and magnesium. I took QSTAR every morning on an empty stomach with ~0.5 L of water; solubility was very good and the taste was fine (slightly nostalgic peach iced tea granulate). Over ~30 days, I noticed slightly improved daytime energy, focus, and mental clarity, with a reduced afternoon energy dip (from ~7/10 to ~4/10) and occasionally one less coffee per day. Sleep quality, recovery, and athletic performance remained unchanged; HRV was sometimes slightly higher, while resting heart rate and REM sleep stayed the same. I did not replace any supplements yet, but my long-term goal would be a fully personalized all-in-one solution that could replace everything else. Overall, QSTAR works well as a simple, low-friction baseline to avoid missing micronutrients, but lacks personalization, and 30 days felt too short for a final long-term or longevity-focused assessment—especially without fully discontinuing other supplements. The uploaded picture shows my hotel bed during a work trip: the small single-serve packages made it extremely easy to stay consistent while traveling—just mix the pure QSTAR complex right after waking up. Still, I’d be happy to continue testing.