Approved indications: Intralipid is approved as an intravenous source of calories and essential fatty acids for adult and pediatric patients, including preterm and term neonates, who require parenteral nutrition, and as a source of essential fatty acids to prevent or treat essential fatty acid deficiency.

Off-label uses and evidence:

• Commonly used off-label as part of “lipid rescue” for local anesthetic systemic toxicity and some severe overdoses of highly lipophilic drugs; support comes mainly from animal studies, case reports, and expert guidelines rather than large randomized trials.
• Used in some fertility practices as an immune-modulating infusion for recurrent implantation failure or recurrent pregnancy loss; small trials and meta-analyses suggest possible benefit in selected patients, but results are mixed and it is not FDA-approved or considered routine standard of care.

Efficacy expectations: When used in parenteral nutrition, Intralipid reliably delivers non-protein calories and essential fatty acids, helping maintain or restore weight, improve energy balance, and prevent or correct biochemical signs of essential fatty acid deficiency over days to weeks as part of a complete nutrition plan; however, in long-term use—especially in infants—pure soybean-oil emulsions like Intralipid may be associated with a higher risk of parenteral nutrition–associated liver disease than some newer mixed-oil or fish-oil–containing emulsions, so clinicians may monitor liver tests closely and adjust therapy if needed.

How it is given: Intralipid is administered only by intravenous infusion, usually through a central or peripheral vein, either as part of a total parenteral nutrition (TPN) admixture or as a separate piggyback infusion, and the rate is kept slow and controlled using an infusion pump.

Typical adult dosing: In stable adults receiving parenteral nutrition, therapy often starts around 1 g of lipid per kilogram of body weight per day and may be increased as needed, but the usual maximum daily dose is about 2.5 g/kg/day, with infusion spread over many hours and with total lipid calories generally kept at no more than about 60% of daily energy needs.

Typical pediatric dosing:

• Birth to 2 years (including preterm and term neonates): start at about 0.5 g/kg/day and gradually increase as tolerated up to a usual maximum of 3 g/kg/day.
• Children 2 to <12 years: generally 1–2 g/kg/day, with a usual maximum of 2.5 g/kg/day.
• Adolescents 12 to 17 years: typically start at 1 g/kg/day with a maximum of about 2 g/kg/day.

Special dosing instructions: The exact dose, concentration, and infusion rate are individualized based on age, body weight, overall caloric and protein prescription, triglyceride levels, organ function, and clinical condition; infusion is started slowly while the patient is observed for reactions and is adjusted or stopped if triglycerides become too high or liver tests worsen.

Missed dose guidance: If a scheduled Intralipid infusion is delayed or missed, you should not attempt to make up the dose yourself; the hospital or infusion team will decide whether to reschedule, adjust subsequent doses, or modify the overall parenteral nutrition prescription.

Overdose: Giving too much Intralipid or infusing it too quickly can lead to fat overload syndrome, respiratory distress, severe hypertriglyceridemia, and metabolic or liver complications; suspected overdose is treated by stopping the infusion, providing supportive care, and monitoring blood tests and organ function in a hospital setting.

Common side effects: In adults, the more frequent side effects include nausea, vomiting, fever, headache, flushing, and elevated blood triglycerides; in children, laboratory changes such as anemia, increased liver enzymes, and cholestasis are relatively common, and these effects typically appear during days to weeks of treatment and are usually mild to moderate.

Serious or rare adverse effects (seek immediate medical attention):

• Allergic or hypersensitivity reactions (especially in people with egg, soybean, or peanut allergy) with rash, itching, swelling, wheezing, or difficulty breathing.
• Acute respiratory distress, metabolic acidosis, or sudden clinical collapse, particularly in neonates and infants if lipid is infused too rapidly.
• Fat overload syndrome from excessive dose or impaired clearance, with sudden worsening liver tests, fever, organ dysfunction, bleeding problems, and neurologic changes.
• Severe hypertriglyceridemia, pancreatitis, or worsening liver disease (parenteral nutrition–associated liver disease), especially with prolonged high-dose use.
• Sepsis, thrombophlebitis, or catheter-related complications associated with intravenous access.

Warnings and precautions: Intralipid is contraindicated in patients with known hypersensitivity to egg, soybean, or peanut, or with severe disorders of lipid metabolism and very high triglycerides; it must be used cautiously and with close monitoring in premature infants, patients with liver disease, renal impairment, uncontrolled diabetes, pancreatitis related to hypertriglyceridemia, or active severe infection.

Pregnancy, breastfeeding, and age considerations: When used at recommended doses as part of parenteral nutrition, Intralipid is not expected to increase the risk of major birth defects or harm breastfed infants, and it is routinely used in pregnant and lactating patients who need parenteral nutrition; dosing and monitoring are adjusted carefully in preterm and term neonates, who are more susceptible to respiratory and liver complications.

Relative safety versus similar products: Intralipid (100% soybean oil) has a long track record and predictable short-term safety, but prolonged high-dose use—especially in infants and children—appears to carry a higher risk of liver complications than some newer mixed-oil or fish-oil–containing lipid emulsions, so clinicians may choose alternative emulsions for long-term therapy when available.

How to report side effects and find safety updates: In the United States, side effects can be reported to the FDA MedWatch program (online or by calling 1-800-FDA-1088) or to the product’s manufacturer; your healthcare team or infusion provider can help file reports and provide up-to-date safety information.

Drug and supplement interactions:

• Vitamin K antagonists (such as warfarin) may be less effective because soybean oil emulsions contain small amounts of vitamin K, so clinicians often monitor clotting tests more closely and adjust anticoagulant dosing if needed.
• Other lipid-containing infusions (for example, propofol or other intravenous fat emulsions) add to the total daily fat load and can increase the risk of hypertriglyceridemia or fat overload, so combined use is carefully tracked.
• Because Intralipid makes blood samples lipemic (milky), it can interfere with some laboratory assays and may affect results if blood is drawn during or soon after an infusion; labs are often timed between infusions when possible.
• No major interactions with foods or alcohol are specific to Intralipid itself, but heavy alcohol use, pancreatitis, or severe liver disease can increase risks from high lipid loads.

Precautions and conditions requiring extra care: Use is avoided or restricted in patients with severe hypertriglyceridemia, acute pancreatitis associated with high triglyceride levels, uncontrolled severe liver disease, or known allergy to egg, soybean, or peanut; extra caution and close monitoring are needed in premature infants, patients with renal impairment, sepsis, or unstable diabetes.

Monitoring needs: During therapy, clinicians typically monitor serum triglycerides, liver function tests, complete blood count, electrolytes, acid–base balance, fluid status, and, in neonates and infants, breathing and oxygenation; monitoring frequency increases when doses are being advanced or if the patient is critically ill.

Interactions with diagnostic tests or procedures: The lipemic appearance of serum during an Intralipid infusion can interfere with some chemistry, endocrine, and drug-level assays and may obscure results on certain optical or colorimetric tests, so the care team may schedule blood draws or specific studies away from infusion times when accurate measurement is important.

Q: What is Intralipid and why am I receiving it?
A: Intralipid is an intravenous fat emulsion that provides calories and essential fatty acids when you cannot get enough nutrition by mouth or feeding tube, and it is given as part of a broader parenteral nutrition plan ordered by your healthcare team.

Q: How long can someone safely stay on Intralipid?
A: Many patients receive Intralipid for days to weeks during an illness, and some with chronic intestinal problems may need it long term; in longer courses your team monitors liver tests, triglycerides, and overall nutrition closely and may change the lipid emulsion or dose if problems arise.

Q: Can I get Intralipid if I have an egg, soy, or peanut allergy?
A: Because Intralipid contains soybean oil and egg phospholipids and has potential cross-reactivity with peanut allergy, it is generally avoided in patients with true severe allergies to these foods, and your doctors may consider alternative products or consult an allergist.

Q: Is Intralipid safe during pregnancy or breastfeeding?
A: When a pregnant or breastfeeding patient needs parenteral nutrition, Intralipid at recommended doses is not expected to harm the baby and is commonly used, with the understanding that good maternal nutrition is critical and the benefits usually outweigh the potential risks.

Q: What should I watch for at home while receiving Intralipid infusions?
A: Contact your care team or seek urgent help if you develop sudden breathing trouble, chest or back pain, fever or chills, new jaundice (yellow eyes or skin), severe abdominal pain, or signs of an allergic reaction such as hives, swelling, or wheezing, or if your infusion bag or line looks damaged, cloudy, or leaking.

Storage: If Intralipid is supplied for home use, keep unopened bags in their original overpouch at room temperature below 77°F (25°C), away from heat and direct light, and do not freeze them.

Before use: Do not use a bag that has been frozen, is leaking, discolored, or has separated into layers; your nurse or pharmacist should provide a replacement bag.

After use and disposal: Any partially used bags or leftover solution must be discarded and never reused; follow instructions from your infusion provider or local regulations for disposing of used bags, tubing, and needles, and keep all supplies out of reach of children and pets.