Terbutaline can be effective when labor needs to be delayed for 24 to 48 hours. But the medicine usually does not completely stop contractions. Nor has it been shown to lower risks for the premature baby.Click to see full answer. Simply so, how long after terbutaline did you go into labor?These drugs need 12 to 72 hours to begin to work. Using terbutaline delays delivery for several days (at least) and allows time for the drugs to work.Secondly, how do you stop early contractions? Empty your bladder. Lie down tilted towards your left side; this may slow down or stop signs and symptoms. Avoid lying flat on your back; this may cause contractions to increase. Drink several glasses of water, because dehydration can cause contractions. how long does terbutaline take to work? Terbutaline is used as a fast-acting bronchodilator (often used as a short-term asthma treatment) and as a tocolytic to delay premature labor. The inhaled form of terbutaline starts working within 15 minutes and can last up to 6 hours.How long does magnesium sulfate stop preterm labor?FDA Limits Magnesium to Prevent Preterm Labor. The FDA today advised clinicians not to give pregnant women magnesium sulfate to prevent preterm labor for more than 5 to 7 days because it may harm developing fetal bones.