Several ketogenic interventions have shown benefits in a wide variety of clinical scenarios. Ketosis can be induced in different ways: by 72 hours of fasting, with a carbohydrate-restricted diet and with supplements. For emergency situations, such as heart failure, the first two options are not an option for patients as they cannot wait 72 hours.~There are 3 safe supplements for inducing ketosis: ketone salts, ketone esters and medium-chain triglycerides. Even though they all raise the beta-hydroxybutyrate serum concentration, they significantly differ in safety profiles, drug vehicles, palatability and monetary costs. A biologically identical beta-hydroxybutyrate supplement with prompt onset of action and free of salt, alcohol and drug vehicles would be an adequate option in many clinical settings.~A gender and age-balanced adult sample will be recruited in order to evaluate the safety and tolerability of free beta-hydroxybutyrate. Participants will be asked to ingest 10 grams of beta-hydroxybutyrate, diluted in water and sweetened with Stevia, every morning between 9:00 and 11:00 for four weeks. Symptoms will be evaluated on a daily basis with a self-administered opened questionnaire. A venous blood gas analysis will be made at the beginning, 2 and 4 weeks later.
The goal of this clinical trial is to evaluate the safety and tolerability of free beta-hydroxybutyrate induced ketosis in healthy individuals. The main question it aims to answer is:~Is free beta-hydroxybutyrate safe and well tolerated by adults?~Participants will be asked to ingest 10 grams of beta-hydroxybutyrate, diluted in water and sweetened with Stevia, every morning between 9:00 and 11:00 for four weeks.