Starting an Antidepressant in Brampton: What to Expect in the First Weeks

Being prescribed an antidepressant can stir up mixed feelings. There may be relief that help is available, alongside worry about side effects, about what it means to need medication, or about what family members might think. Some people leave the doctor’s office with the prescription in hand and still feel uncertain about whether to fill it.

Those feelings are understandable. Antidepressants are among the most commonly prescribed medicines in Canada, used for depression, anxiety disorders, premenstrual dysphoric disorder, postpartum depression, some types of chronic pain and other conditions. They help many people feel like themselves again. But they work best when you know what to expect, especially in the first few weeks, when side effects may appear before benefits do.

This article walks through those early weeks. The pharmacists at Pharmasave Remembrance, 645 Remembrance Road in Brampton, talk with patients starting antidepressants regularly, and we encourage you to ask questions at any stage.

Why antidepressants are prescribed

Antidepressants affect chemical messengers in the brain, such as serotonin and norepinephrine, that influence mood, anxiety, sleep and pain. Exactly how they relieve depression is more complex than a simple “chemical imbalance” explanation, but research shows they are effective for many people with moderate to severe depression and several anxiety disorders.

There are several classes of antidepressants, and each medicine within a class has its own profile of benefits and side effects. Your prescriber will choose based on your symptoms, other health conditions, other medicines, past responses and preferences. If the first medicine does not suit you, there are other options.

Antidepressants are often most effective when combined with other supports, such as psychotherapy, regular activity, good sleep and social connection.

The timeline: patience in the first weeks

One of the most important things to know is that antidepressants do not work immediately. While some people notice improvements in sleep, energy or appetite within the first week or two, the full effect on mood and anxiety usually takes several weeks.

This delay can be discouraging, particularly if you are dealing with side effects in the meantime. It may help to think of the first month as a settling-in period. Your prescriber will usually want to check in during this time to see how you are doing and whether the dose needs adjusting.

Keep a simple note of how you feel each week: mood, sleep, energy, anxiety and any side effects. This makes follow-up appointments more productive and helps you notice gradual changes that are easy to miss day to day.

Sometimes the people around you notice improvement before you do. A partner may comment that you are laughing more, or a friend may notice you are returning messages again. It can be helpful to ask someone you trust to share what they observe.

If several weeks pass at a steady dose and you see little or no change, that is useful information rather than a sign of failure. Your prescriber may adjust the dose, give the medicine more time, add another form of support or try a different medicine. Finding the right fit sometimes takes more than one attempt, and many people who do not respond to their first antidepressant do well on a later one. What matters is staying in contact with your prescriber rather than quietly stopping on your own.

Common early side effects and how to manage them

Side effects vary by medicine and by person. Many are mild and ease within a few weeks. Common early ones include:

• Nausea or upset stomach. Taking the medicine with food may help, if your pharmacist confirms this is appropriate for your medicine.
• Headache. Usually temporary. Ask the pharmacist before adding a pain reliever, as some combinations need caution.
• Sleep changes. Some medicines can cause drowsiness, others insomnia. Your prescriber may suggest taking the dose at a particular time of day.
• Feeling jittery or restless. Sometimes occurs early and often settles.
• Dry mouth. Sipping water, sugar-free gum or lozenges can help.
• Sweating. More noticeable for some people.

Some side effects may last longer, such as changes in sexual desire or function, or weight changes. These are important to discuss, as they are a common reason people stop treatment. There are often ways to address them, such as adjusting the dose or switching medicines.

Warning signs to report promptly

Contact your prescriber or seek care promptly if you notice:

• Worsening depression, anxiety or agitation
• New or worsening thoughts of suicide or self-harm, particularly in young people
• Unusual changes in behaviour, such as extreme energy, racing thoughts or reduced need for sleep
• Rash, swelling or difficulty breathing
• Confusion, high fever, muscle stiffness, rapid heartbeat or severe diarrhea, which could suggest a rare reaction involving too much serotonin

If you have thoughts of suicide, call or text 988, call 911, or go to the nearest emergency department immediately. Health Canada advises that people starting antidepressants, especially young people, be monitored for changes in mood and behaviour.

Taking your medicine consistently

Antidepressants work best when taken every day as prescribed. Practical tips include:

1. Take your dose at the same time each day, linked to a daily routine such as brushing your teeth
2. Use a phone alarm or medication reminder app
3. Keep a weekly pill organiser if you take several medicines
4. Request refills before you run out; our refill service makes this easier
5. If you miss a dose, check your medicine’s instructions or ask the pharmacist what to do rather than doubling up

If you take several medicines and find them hard to manage, ask about compliance packaging, which organises doses by day and time.

Interactions with other medicines and products

Antidepressants can interact with other prescription medicines, over-the-counter products and natural health products. Some combinations increase the risk of side effects, including bleeding or serotonin-related reactions.

Products to ask about before using include:

• St. John’s wort and other herbal products for mood
• Certain pain relievers, particularly when combined with blood thinners
• Some cough and cold medicines
• Migraine medicines in certain classes
• Certain supplements marketed for sleep or stress

Tell the pharmacist you are taking an antidepressant whenever you buy a new product. A medication review can be a good time to check everything together; ask whether you qualify.

Alcohol, driving and daily life

Alcohol can worsen depression and anxiety, interfere with sleep and increase drowsiness with some antidepressants. Many prescribers recommend limiting or avoiding alcohol, especially in the first weeks while you learn how the medicine affects you.

If your medicine makes you drowsy or affects concentration, take care with driving and operating machinery until you know how you respond. For commuters on busy routes like the 410 or 407, this is an important safety consideration.

Pregnancy, breastfeeding and family planning

If you are pregnant, planning a pregnancy or breastfeeding, tell your prescriber and pharmacist. Several antidepressants can be used during these times, and the decision involves weighing the risks of untreated depression against the risks of medicine. Do not stop your medicine suddenly if you become pregnant; contact your prescriber to discuss the plan. Our post on medications during pregnancy offers more guidance.

Stopping safely when the time comes

Many people take antidepressants for six months to a year or longer after they feel better, to reduce the chance of depression returning. Some people need longer-term treatment. The right duration is a decision to make with your prescriber.

When it is time to stop, your prescriber will usually recommend a gradual reduction. Stopping suddenly can cause discontinuation symptoms such as dizziness, irritability, flu-like feelings, sleep problems and sensations described as “brain zaps.” These are not the same as addiction, but they can be uncomfortable and are often preventable with a slow taper.

Addressing stigma and talking to family

In some families and communities, taking medicine for mental health is still seen as a sign of weakness, or as something to keep private. This can make people reluctant to start treatment or tempted to stop early.

Depression is a medical condition, and treating it is no different from treating diabetes or high blood pressure. You decide who to tell. Some people find that sharing with a trusted family member brings unexpected support, while others prefer privacy. Either choice is valid.

If privacy at home is a concern, let the pharmacy team know. You can ask how your prescriptions are labelled and packaged, who is allowed to pick them up on your behalf, and whether a phone call or private conversation at the counter would suit you better.

Questions are always welcome at Pharmasave Remembrance

Whether you are holding a new prescription or have been taking an antidepressant for a few weeks and have concerns, our pharmacists are here to help in a private, respectful conversation.

Call (905) 843-3232 or stop in at 645 Remembrance Road, Unit B103 & B104, Brampton, ON L7A 3H2. Check hours on our contact page, and if you would like more time to talk, request an appointment on the booking page.

This content is general information about antidepressants and is not a substitute for medical advice. Always speak with your prescriber or pharmacist before starting, changing or stopping any medicine.