My immune system got stronger and I'm…
My immune system got stronger and I'm not always sleepy and always feeling tired. I feel like I've become stronger because I've taken a Leber-Formel. Many thanks to you Jasper Caven

Reply from Jasper Caven
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Replied to 35% of negative reviews
Typically replies within 1 month
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
My immune system got stronger and I'm not always sleepy and always feeling tired. I feel like I've become stronger because I've taken a Leber-Formel. Many thanks to you Jasper Caven

Reply from Jasper Caven
The product is perfect Das produkt ist perfekt
It was a pleasure to work with him.
I felt really comfortable with his help and already lost 12 pounds in an realistic period of time. I feel so much better now.
I‘m very happy with my investition!
I felt better really fast & the delivery was great too.
In combination with healthy food I really lost weight.
Thank you!
Great Work
fast service!
- High- Quality
- after only two weeks i feel like i have more energy.
- easy weightlos with the right food ✅

Reply from Jasper Caven
Excellent support for nutritional questions. With the coaching I have finally achieved my goals. Very competent and friendly contact person. I can just recommend it to everybody.

Reply from Jasper Caven
The food supplement "The metabolism formula" met my expectations. I feel more energy and feel great after using it. I recommend.

Reply from Jasper Caven
-fast an reliable service
- High- Quality advice and diets for weightloss & metabolism changes
- way better feeling after just 2 weeks in treatment

Reply from Jasper Caven
The functionality of my immune system has increased since I took these products and at the same time my fat loss has been optimized. In the gym during training I get the most for my muscle building. And regeneration is additionally promoted, which is very important for my body. Unfortunately, in everyday life it is not possible to absorb all the nutrients from the diet, so I am very happy to be able to take these supplements separately for my food intake. I have more energy in everyday life and I feel very good, like I haven’t been in a long time. The product looks great on me.
And when ordering the supplements, the customer service was very friendly and helpful. The delivery also went totally smoothly. Thank you very much.

Reply from Jasper Caven
Great product in combination with sport and exercise I have had good results. Very good customer service and delivery!

Reply from Jasper Caven
This helped me honestly to improve the energy in my body. The nourishment was excellent and helped me a lot. It gave me a good feeling knowing that I do something good for my body. Just class
Very good product, it works very quickly. An easy and realistic customer sequence in combination with good nutrition emerged very fast. It just tastes delicious.
The food suplement "The Metabolism formula" works great. I have more energy and I feel good after using it. I highly recommend it.
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.