Axit (Mirtazapine)
Complete patient guide for uses, dosage, side effects, and safety information
Prescription RequiredQuick Facts
What Is Axit Used For?
Axit contains the active ingredient mirtazapine and is prescribed to treat depression, including preventing it from coming back.
Primary Uses
Axit is used to treat depression, including helping prevent relapse. Depression is more than just feeling low – it’s a longer-lasting condition that affects your whole body and can cause symptoms like loss of interest in activities, sleep problems, changes in appetite, low energy, and feelings of guilt.
How It Works
Depression is thought to be caused by a chemical imbalance in parts of the brain. Axit works by correcting this chemical imbalance, which may help relieve the symptoms of depression.
Good to know: Axit is not addictive.
How to Take Axit
Take Axit exactly as your doctor tells you. The dose and timing will be specifically tailored to your needs.
Dosage Instructions
The usual starting dose is 15 mg per day. Your doctor may slowly increase this dose depending on how you respond to Axit. The effective dose for most people is usually between 30 mg and 45 mg per day. Take at about the same time each day, preferably as a single dose at bedtime. If recommended by your doctor, it may be taken in divided doses (once in the morning and once at bedtime). Swallow the tablets with water or other fluid, with or without food. Do not crush or chew the tablets. The 15 mg and 30 mg tablets can be divided in half along the breakline if advised by your doctor.
What If You Miss a Dose?
For once daily dosing: If you forget to take the tablet before bed, do not take the missed dose the next morning as it may cause drowsiness during the day. Continue with your normal evening dose. For twice daily dosing: If you forget the morning dose, take it with your evening dose. If you forget the evening dose, do not take it with the next morning dose. If you forget both doses, do not try to make up for the missed tablets – just continue with your usual doses the next day.
Important: Keep taking Axit until your doctor tells you to stop. Most antidepressants take time to work – some symptoms may improve in 1-2 weeks, but it can take up to 2-4 weeks to feel the full benefit. Even when you feel well, you’ll usually need to take Axit for 4-6 months or longer.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- Increased appetite and weight gain
- Lethargy, drowsiness, or sleepiness
- Dizziness
- Headache
- Dry mouth
- Nausea, vomiting
- Constipation, diarrhea
- Back pain
- Muscle aches and pains
- Memory problems
- Nightmares/vivid dreams
- Anxiety, insomnia
- Swollen ankles or feet
- Skin rash
- Tiredness
- Tingling fingers or toes
- Restless legs
- Speech disorders
- Difficulty passing urine
- Prolonged painful erection
Seek immediate medical attention if you experience:
- Suicidal thoughts or behavior
- Confusion
- Shaking or tremors
- Severe skin reactions
- Signs of infection (fever, chills, sore throat, mouth ulcers)
- Allergic reactions (skin rash, swelling, breathing difficulty)
- Seizures
- Sudden muscle contractions
- Serotonin syndrome (fever, sweating, increased heart rate, muscle contractions)
- Heart rhythm changes
- Fainting
- Severe liver problems (yellow eyes or skin)
- Severe abdominal pain and nausea
- Muscle pain with dark urine
- Mania or excessive excitability
Important Warnings
There are important safety considerations before taking Axit. Make sure to discuss your medical history with your doctor.
Who Should Not Take Axit
Do not take Axit if you are allergic to mirtazapine or any ingredients in the tablets. Do not take if you are taking or have taken a monoamine oxidase inhibitor (MAOI) within the last 14 days, as this can cause a serious reaction with sudden increase in body temperature, extremely high blood pressure, and severe convulsions. Examples include phenelzine, tranylcypromine, and selegiline.
Medical Conditions to Discuss
Tell your doctor if you have: thoughts of suicide or self-harm, epilepsy, liver disease, kidney disease, heart disease, low blood pressure, certain heart rhythm conditions, mental illness (schizophrenia, manic depression), diabetes, glaucoma, enlarged prostate causing urination problems, unexplainable high fever with sore throat and mouth ulcers, or galactose intolerance.
Pregnancy and Breastfeeding
Axit is not recommended during pregnancy. Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding. If you take Axit until or shortly before birth, your baby should be supervised for possible adverse effects. It is not known whether Axit passes into breast milk.
Suicide Risk: There is an increased risk of suicidal thoughts and behavior in young adults under 25 years with psychiatric conditions. Contact your doctor immediately or go to the nearest hospital if you have suicidal thoughts or notice warning signs like thoughts of death, self-harm, increased aggression, irritability, or agitation.
Drug Interactions
Some medicines may interfere with Axit and affect how it works. Always tell your doctor about all medicines you’re taking.
- Erythromycin (antibiotic)
- Ketoconazole (antifungal)
- HIV/AIDS medications
- Cimetidine (for reflux and stomach ulcers)
- Nefazodone (for depression and anxiety)
- Phenytoin or carbamazepine (for epilepsy)
- Rifampicin (for tuberculosis)
- Other depression medicines (SSRIs, venlafaxine, L-tryptophan)
- Monoamine Oxidase Inhibitors
- St. John’s Wort
- Benzodiazepines
- Morphine
- Lithium
- Methylene blue
- Tramadol
- Linezolid (antibiotic)
- Triptans (sumatriptan, naratriptan, zolmitriptan)
- Cetirizine (for allergies)
- Heart rhythm medications
- Warfarin (blood thinner)
Alcohol & Driving
Axit can affect your ability to drive safely and may interact dangerously with alcohol.
Alcohol
You are advised not to drink alcohol while taking Axit. Combining Axit and alcohol can make you more sleepy and less alert.
Driving and Operating Machinery
Do not drive or operate machinery until you know how Axit affects you. Axit may cause drowsiness, dizziness, or sleepiness in some people and affect alertness and concentration.
Storage
Store Axit below 30°C in a cool, dry place away from moisture, heat, or sunlight. Keep tablets in their blister pack until it’s time to take them. Store in a locked cupboard at least 1.5 meters above ground, away from children. Do not store in the bathroom, near a sink, in the car, or on window sills.
Overdose Information
If you think you or anyone else has taken too much Axit, seek urgent medical attention immediately. Symptoms may include drowsiness, dizziness, confusion, agitation, and changes to heart rhythm (fast, irregular heartbeat) or fainting. Call the Poisons Information Centre (13 11 26), contact your doctor, or go to the nearest hospital emergency department, even if there are no signs of discomfort.
Frequently Asked Questions
Some symptoms may improve in 1-2 weeks, but it can take up to 2-4 weeks to feel the full benefit of Axit. Don’t be discouraged if you don’t feel better right away – most antidepressants take time to work.
Yes, you can take Axit with or without food. Swallow the tablets with water or other fluid.
No, Axit is not addictive.
Do not suddenly stop taking Axit without checking with your doctor first. Suddenly stopping may cause nausea, headache, dizziness, anxiety, and agitation. Your doctor may want to gradually reduce your dose before stopping completely.
No, you are advised not to drink alcohol while taking Axit. Combining Axit and alcohol can make you more sleepy and less alert.
Yes, increased appetite and weight gain are common side effects of Axit.
If taking once daily at bedtime and you forget, do not take the missed dose the next morning as it may cause daytime drowsiness. Just continue with your normal evening dose. For twice daily dosing, the instructions vary depending on which dose you missed – refer to the detailed instructions or ask your pharmacist.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.