Inclusion Criteria:  Pregnancy with a single fetus Patient over 18 years of age Patient under 35 years of age Pregnancy greater than 25 weeks' gestation confirmed by first trimester ultrasound or reliable last period Fetus with decrease or flattening of its growth curve by ultrasound (P> 10 and <25) Apparently healthy fetus Fetus without Doppler alterations in any of its blood vessels (Venous Ductus, Cerebral Artery medial, Umbilical Artery .  Exclusion Criteria:  Fetus diagnosed with a malformation Fetus diagnosed with a syndrome or chromosomopathy Fetus below the 10th percentile for gestational age by ultrasound Mother with Type 1, Type 2 or Gestational Diabetes mellitus. Chronic maternal hypertension Preeclampsia with data of severity or early onset Aspirin intake (100-150 mg a day from the first trimester of pregnancy) Fetus with a poor ultrasonographic window for evaluation. Mother with BMI <18.5 prior to pregnancy Maternal BMI> 30 Known allergy to treatment Non-reassuring fetal state. Abnormal placental insertion. Patient with renal insufficiency, LUPUS or Antiphospholipid syndrome