Bio Age-Guarantee

Reimbursement – Terms and Conditions

Client shall:

  1. Buy 3 kits of ProLon 5-day within a 90 days timeframe (“Purchase”) using the same data (name, surname, address, e-mail and phone number) and keep record of such purchases; 
  1. Do 1 kit ProLon 5-day cycle a month for three consecutive months (example: October, November and December); 
  1. Contact “Fondazione Valter Longo” before starting the first cycle of ProLon 5-day to find out which blood test they have to do; 
  1. Do 2 blood tests, one before the first cycle of ProLon 5-day and the second after the third cycle of ProLon 5-day. Between the first and the second blood test must elapse not less than 95 days and not more than 120 days;
  1. Send the copy of both blood tests to “Fondazione Valter Longo” in order to get their Bio-Age certification” (“Bio-Age Certification”) from “Fondazione Valter Longo”;
  1. Send their “Bio-Age Certification” to us at in order to get the reimbursement in case the “Bio-Age Certification” declares that the Bio-Age of the Client was not reduced.


(cumulatively, the “Request”).

The client shall be refunded for the same amount they paid for the Purchase (“Reimbursement”). If one Client buys more than 3 kits of ProLon 5-day within 90 days, the Reimbursement will be limited to the amount paid for 3 kits of ProLon 5-day. Each Client shall get only 1 Reimbursement.

Reimbursement shall be made via bank transfer to the bank account details provided by the Client. The Client shall be the holder or co-holder of the bank account and the bank shall be located in Europe or Norway, Andorra, Bosnia Herzegovina, Monaco, Macedonia, Serbia, Montenegro or Serbia.

One specific bank account can be used just once for the Reimbursement.

The reimbursement can take place if the Request is submitted to us within 15 days from the date of the issue of the “Bio-Age Certification”.

Only after entirely, timely and successfully completing the Request, L-Nutra Italia S.r.l. will make the Reimbursement within 30 working days from the validation of the Request. 

The above-mentioned process must not be considered as a “prize contest”. This process and the Reimbursement must be considered as a deferred discount.

You may return ProLon 5-day before starting/consuming the cycle and exercise your right of withdrawal within 14 days from the Purchase.

For any request of clarification please contact us: