Fetzima is taken as an oral tablet, and the dosage will depend on your specific condition and your doctor’s instructions. The tablet should be swallowed whole with a glass of water. It’s recommended that you take Fetzima at the same time each day to help you remember.

You can take Fetzima with or without food, but try to maintain consistency in how you take it. If you miss a dose, take it as soon as you remember, unless it’s almost time for your next dose. In that case, skip the missed dose—never take two doses at once.

If you experience any side effects or find it difficult to swallow the tablet, consult your healthcare provider. They may be able to adjust the dosage or recommend an alternative solution to ease the process.

Fetzima (Levomilnacipran) works by increasing the levels of serotonin and norepinephrine in the brain. These are neurotransmitters, which are chemicals that help transmit signals between nerve cells and regulate various functions, including mood, energy, and sleep.

• Serotonin: It is often called the “feel-good” neurotransmitter, as it plays a role in mood regulation, sleep, appetite, and overall emotional well-being.

   

• Norepinephrine: This neurotransmitter is involved in controlling stress response, alertness, energy, and attention.

   

Fetzima works by blocking the reuptake (reabsorption) of these neurotransmitters back into the nerve cells. By preventing the reuptake, Fetzima increases the concentration of serotonin and norepinephrine in the brain, which helps to improve mood, relieve anxiety, and reduce other depressive symptoms.

Unlike some other antidepressants, Fetzima is more selective in its actions, primarily influencing norepinephrine to a greater degree than serotonin. This property makes it effective for individuals who may benefit from a more targeted increase in norepinephrine levels, such as those who experience fatigue and lack of energy with depression.

Like any medication, Fetzima can cause side effects. The most common side effects include:

• Nausea and vomiting: Some individuals may experience gastrointestinal upset when starting Fetzima. This usually improves after a few days of treatment.

   

• Headache: Fetzima can cause headaches, especially when you first start taking it.

   

• Insomnia or drowsiness: Some people experience difficulty sleeping (insomnia), while others may feel unusually drowsy or fatigued.

   

• Increased blood pressure: Fetzima can increase blood pressure, particularly at higher doses. Your doctor may monitor your blood pressure regularly while you’re on this medication.

   

• Sexual dysfunction: Like many antidepressants, Fetzima may cause sexual side effects, including reduced libido, difficulty achieving orgasm, or erectile dysfunction.

   

• Sweating: Some individuals may experience excessive sweating.

   

Serious side effects are rare but can include:

• Serotonin syndrome: A potentially life-threatening condition caused by too much serotonin in the brain. Symptoms include agitation, hallucinations, fever, rapid heart rate, and muscle spasms. If you notice any of these symptoms, seek immediate medical attention.

   

• Increased suicidal thoughts: As with other antidepressants, there is a risk of increased suicidal thoughts or behavior, especially in younger people. This is why close monitoring is essential, particularly during the initial stages of treatment.

   

If you experience any severe side effects or if mild side effects persist, consult your doctor.

Before taking Fetzima, be aware of the following warnings and precautions:

• Risk of serotonin syndrome: As mentioned, combining Fetzima with other medications that affect serotonin can lead to serotonin syndrome. Be sure to inform your doctor of any other drugs you are taking.

   

• Blood pressure monitoring: Fetzima may increase blood pressure, so it’s important to monitor your blood pressure regularly. Your doctor may adjust the dosage if necessary.

   

• History of bipolar disorder: Fetzima can trigger manic episodes in people with bipolar disorder. Your doctor will likely assess this risk before prescribing it.

   

• Pregnancy and breastfeeding: Fetzima should be used during pregnancy only if the potential benefits outweigh the risks. It is unknown whether it passes into breast milk, so it should be used with caution in breastfeeding mothers.

   

Withdrawal symptoms: Stopping Fetzima suddenly can lead to withdrawal symptoms such as dizziness, irritability, and flu-like symptoms. It is important to taper off the medication under the guidance of your doctor.

Fetzima can interact with several other medications, and it’s essential to inform your doctor about any other drugs you are taking, including prescription medications, over-the-counter drugs, and herbal supplements. Some notable interactions include:

• Monoamine oxidase inhibitors (MAOIs): Fetzima should not be used in conjunction with MAOIs, a class of antidepressants, or within 14 days of stopping an MAOI due to the risk of serotonin syndrome, a potentially life-threatening condition caused by too much serotonin in the brain.

   

• Other SNRIs or SSRIs: Combining Fetzima with other drugs that affect serotonin levels (such as other SSRIs, SNRIs, or certain migraine medications like triptans) can increase the risk of serotonin syndrome.

   

• Blood thinners (anticoagulants): Fetzima may increase the risk of bleeding, particularly if taken with anticoagulants like warfarin or nonsteroidal anti-inflammatory drugs (NSAIDs).

   

• Alcohol: Drinking alcohol while on Fetzima can increase the risk of side effects like dizziness, drowsiness, and difficulty concentrating. It is advisable to avoid alcohol or limit consumption while taking this medication.

   

• Medications that affect the liver: Certain drugs that affect the liver’s ability to metabolize medications may increase or decrease the levels of Fetzima in the body, so it’s important to discuss any liver conditions or treatments with your healthcare provider.

   

Always discuss your complete list of medications with your healthcare provider to avoid any dangerous interactions.

The initial dose of Fetzima for treating major depressive disorder is typically 20 mg once daily. This dose may be gradually increased by your doctor over a period of time to minimize side effects and find the most effective dose. The usual maintenance dose is between 40 mg to 120 mg per day, depending on how well you respond to the medication.

Your doctor will monitor your progress and may adjust the dose based on your response. The full therapeutic effect of Fetzima may take several weeks to become apparent, so patience is important.

Fetzima is a prescription medication, meaning it must be prescribed by a healthcare provider. It is important to follow your doctor’s guidance and attend any follow-up appointments to ensure the medication is working as expected and to adjust the dosage if needed.

Fetzima is typically prescribed for individuals with major depressive disorder, especially if other treatments have been unsuccessful. The doctor will carefully consider the patient’s medical history, including any history of heart problems, high blood pressure, or other conditions, before prescribing this medication.

• What is Fetroja used for?
  It is an antibiotic used to treat serious infections caused by Gram-negative bacteria, including those resistant to many other antibiotics.
  Specifically, it is indicated for:

  • Complicated urinary tract infections (cUTI), including pyelonephritis

  • Hospital-acquired and ventilator-associated bacterial pneumonia (HABP/VABP)

• What are the brand names?
  Fetroja® (U.S. and international).

• What is the active ingredient?
  Cefiderocol, a siderophore cephalosporin antibiotic.

• How does Fetroja work?

  • It acts as a “Trojan horse” antibiotic: cefiderocol binds to iron and uses bacterial iron uptake pathways to enter the bacterial cell.

  • Once inside, it inhibits cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to bacterial death.

  • This mechanism allows it to overcome many forms of antibiotic resistance.

• What type of medication is it?
  A siderophore cephalosporin (β-lactam antibiotic) — the first of its kind.

• How is Fetroja administered?

  • By intravenous (IV) infusion only, over 3 hours.

  • Usually given every 8 hours.

  • Administered in hospitals or specialized care settings.

• What are the available strengths?

  • 1 gram (g) vial for IV reconstitution.

• How long is treatment?
  Typically 7–14 days, depending on the infection and clinical response.

• What bacteria does Fetroja target?
  Effective against a broad range of aerobic Gram-negative bacteria, including:

  • Pseudomonas aeruginosa

  • Acinetobacter baumannii

  • Enterobacterales (e.g., E. coli, Klebsiella pneumoniae)

  • Carbapenem-resistant strains (CRE, CRAB, CRPA)

• What are the common side effects?

  • Diarrhea

  • Constipation

  • Nausea or vomiting

  • Rash

  • Headache

  • Infusion site reactions

• Are there serious side effects?
  Rare, but possible:

  • Clostridioides difficile–associated diarrhea (C. diff infection)

  • Hypersensitivity reactions (rash, hives, anaphylaxis)

  • Liver enzyme elevation

  • Increased mortality in critically ill patients with multidrug-resistant infections (boxed warning)

• What is the FDA warning about?
  Fetroja carries a boxed warning due to increased mortality observed in certain clinical trials, especially in patients with severe multidrug-resistant infections.
  The exact cause is unknown, but careful patient selection and monitoring are required.

• Who should not receive Fetroja?

  • Individuals allergic to cefiderocol, cephalosporins, or other β-lactam antibiotics.

  • Patients with a history of severe allergic reactions (anaphylaxis) to penicillin-type drugs.

• Can Fetroja cause diarrhea?
  Yes — diarrhea, including C. difficile infection, may occur even weeks after therapy ends.

• Can Fetroja be used during pregnancy?
  Use only if clearly needed — animal studies show no harm, but there are no adequate human studies.

• Can I use it while breastfeeding?
  It’s unknown whether cefiderocol passes into breast milk — caution is advised.

• Does Fetroja interact with other medications?
  No major interactions are known, but renal function should be monitored when given with other nephrotoxic agents (e.g., aminoglycosides, vancomycin).

• Does Fetroja affect the kidneys?
  Generally safe, but dose adjustments are needed for patients with kidney impairment.

• How is Fetroja eliminated from the body?
  Primarily excreted unchanged in the urine, making it effective for urinary tract infections.

• Can Fetroja be used in children?
  Currently approved for adults only; pediatric studies are ongoing.

• How should Fetroja be stored?

  • Store dry powder vials at 20°C–25°C (68°F–77°F).

  • Reconstituted solution should be used promptly or refrigerated for up to 24 hours.

• Is there a generic version available?
  No — Fetroja (cefiderocol) is currently brand only.

• Where is Fetroja administered?
  Given in hospitals or infusion centers under medical supervision.