Side effects of psychiatric medication

Fatigue, stiffness, hypersalivation, inner restlessness — these effects are real, common, and often underreported. Here's how to track them and talk about them effectively with your doctor.

Information, not medical advice. This article is meant to help patients communicate better with their doctor. It does not replace a consultation, medical advice, or the patient information leaflet for your medication. If you experience a worrying symptom, contact your doctor or call emergency services.

Why side effects are often minimized

Many people on psychiatric treatment hesitate to mention their side effects — afraid of seeming "difficult," forgetting them at the appointment, or simply unsure whether what they feel is "normal."

Yet side effects are essential medical information. They allow your doctor to adjust the dose, change the molecule, or add a corrective treatment. Ignoring them means missing a key lever for improvement.

The most common side effects by drug class

Antipsychotics (risperidone, olanzapine, aripiprazole…)

Muscle stiffness Stiff limbs, slow gait, fixed facial expression

Akathisia Inner restlessness, inability to stay seated

Hypersalivation Especially with clozapine — excessive saliva, often at night

Drowsiness Marked fatigue, need to sleep during the day

Antidepressants (SSRIs, SNRIs…)

Sleep disturbances Insomnia at the start of treatment, intense dreams

GI effects Nausea, especially in the first few weeks

Sexual dysfunction Common, often not raised spontaneously

Initial anxiety May worsen during the first 2 weeks

Mood stabilizers (lithium, valproate, lamotrigine…)

Tremor Especially with lithium — fine hand tremor

Weight gain Valproate and lithium can increase appetite

Polyuria / thirst Lithium: frequent urination, excessive thirst

Cognitive slowing Word-finding difficulty, slower memory

How to usefully record side effects

A good side-effect report answers four questions:

When? — For how many days, at what time of day?
How intense? — Annoying but bearable, or truly disabling?
Constant or variable? — Every day, some days, after meals?
Impact on daily life? — Does it prevent working, sleeping, going out?

In PsychoDose, you record your side effects each day in a few seconds — fatigue, hypersalivation, stiffness, inner restlessness. After a week, you have a clear picture to show your doctor.

The difference between discomfort and warning signal

Some side effects are uncomfortable but not dangerous: drowsiness, dry mouth, moderate weight gain. Others require rapid medical contact:

High fever + muscle rigidity (neuroleptic malignant syndrome — rare but urgent)
Skin rash on lamotrigine (may signal a serious reaction)
Major tremor or confusion on lithium (signs of overdose)
Intensified suicidal ideation in the first weeks of an antidepressant

When in doubt, call your doctor or emergency services.

Talking to your doctor about side effects

Appointment time is short. Arriving with precise notes changes the quality of the consultation radically. Instead of "I'm a bit tired," you can say: "For 10 days, I've had intense fatigue between 2 and 5 pm; it prevents me from working; it's present 6 days out of 7."

That level of precision allows your doctor to make an informed decision — rather than saying "let's wait another month."

Start tracking your side effects today. Two minutes a day is enough.

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