The objective of the present study was to evaluate the effect in piglets productive parameters of sodium heptanoate protected with hydrogenated palm fatty acids distillate sodium salt (HEPT’ON) in a control diet without any additive. Thirty-two 21-d-old piglets (6.5 ± 0.5 Kg) were randomly divided in 2 groups: control (C) and 70% Na-heptanoate protected (HEPT’ON) 3 kg/t (21–35 d) and 1 kg/t (36–49 d). Every treatment was replicated 4 times and each replicate consisted of 4 piglets in the first 2 weeks and 3 piglets in the second 2 weeks of the trial. Mash feeds and water were offered ad libitum. BW, ADG, ADFI and FCR were recorded for every period. At the end of each period (35 d and 49 d), one piglet per replicate was euthanized and samples from the ileum and cecum were taken to analyze gut microflora. Data were analyzed as a completely randomized design by GLM of SPSS v. 19.0. Piglets receiving sodium heptanoate protected with hydrogenated PFAD sodium salt (HEPT’ON) tended to have higher final body weight (15.997 kg vs 14.201 kg; P = 0.0686). The use of HEPT’ON resulted in a tendency to improve FCR (P = 0.0660). Also the ADG was numerically improved in this group (P = 0.0686). No significant differences were observed in count of Lactobacillus and E. coli. We can conclude that the use of sodium heptanoate protected with hydrogenated PFAD sodium salt may be able to improve productive parameters in piglets compared with the control treatment. Further research is needed.