SSRI Brain Zaps (Discontinuation Syndrome)
Brief electrical-shock sensations in the head, often with dizziness and visual disturbances, that appear when SSRI doses are missed or the medication is tapered too quickly.
Read the guideSSRI Sexual Dysfunction
Reduced libido, delayed or absent orgasm, erectile dysfunction, and genital numbness from SSRI antidepressants — the most common reason patients ask to switch medications.
Read the guideSSRI Weight Gain
Progressive weight gain on SSRI antidepressants — typically 5-15 lbs over the first year, sometimes much more, often distinct from any change in eating or exercise.
Read the guideAntidepressant Insomnia
Difficulty falling asleep, frequent night-time waking, or non-restorative sleep caused by activating antidepressants — common with SSRIs, SNRIs, and Wellbutrin.
Read the guideSSRI Emotional Blunting
The flattening of emotional range on SSRIs — reduced ability to feel pleasure, sadness, love, or anger fully. Affects 40-60% of long-term SSRI users.
Read the guideSSRI Fatigue and Drowsiness
Persistent tiredness, daytime drowsiness, and reduced energy from SSRIs — common but often confused with depression's low energy.
Read the guideSSRI Discontinuation Syndrome
The full withdrawal cluster from stopping or rapidly tapering SSRIs/SNRIs — flu-like symptoms, mood swings, GI upset, balance problems, and sensory disturbances that affect up to 56% of patients coming off antidepressants.
Read the guideSSRI Jaw Clenching and Bruxism
Involuntary jaw clenching and teeth grinding during the day or in sleep — a common but under-recognized SSRI side effect that damages teeth and produces TMJ pain over months.
Read the guideSSRI and SNRI Nightmares
Vivid, disturbing, or violent dreams that appear after starting or adjusting SSRIs/SNRIs — common, distressing, and often unmentioned by prescribers.
Read the guideSSRI Excessive Yawning
Uncontrollable, repeated yawning unrelated to tiredness — a well-documented but rarely-discussed SSRI side effect that affects daily function and social comfort.
Read the guideSSRI Night Sweats
Drenching night-time sweating on SSRIs and SNRIs in the absence of fever or other medical cause — a frequent but under-recognized side effect that disrupts sleep and quality of life.
Read the guideEffexor Brain Zaps and Withdrawal
Effexor (venlafaxine) produces the most pronounced brain zaps and discontinuation syndrome of any SNRI because of its very short half-life — a missed dose can produce symptoms within hours.
Read the guideCymbalta Withdrawal Syndrome
Cymbalta (duloxetine) discontinuation produces a severe, FDA-acknowledged withdrawal syndrome — brain zaps, sweating, GI upset, and prolonged "Cymbalta discontinuation" experience documented across thousands of patient reports.
Read the guideBenzodiazepine Rebound Anxiety
The paradoxical increase in anxiety between benzodiazepine doses, during tolerance development, or during withdrawal — often worse than the original anxiety the medication was prescribed to treat.
Read the guideBenzodiazepine Cognitive Impairment
Memory problems, slowed processing speed, and "brain fog" produced by chronic benzodiazepine use — often subtle, often underappreciated, often reversible with discontinuation.
Read the guideKlonopin Memory Problems
Klonopin (clonazepam) is particularly hard on memory — its long half-life means accumulating exposure, and the cognitive effects often appear gradually over months.
Read the guideTrazodone Priapism
Trazodone can cause priapism — prolonged, painful, unwanted erection lasting more than 4 hours that is a urological emergency requiring immediate medical care.
Read the guideMirtazapine (Remeron) Weight Gain
Mirtazapine produces substantial weight gain in most patients — often 10-30 pounds in the first year — driven by its histamine-1 antagonism and downstream metabolic effects.
Read the guideAdderall Comedown and Rebound
The late-afternoon and evening crash that follows Adderall (and other stimulants) wearing off — fatigue, irritability, mood drop, and rebound ADHD symptoms that complicate ADHD treatment for many patients.
Read the guideGLP-1 Mood Changes
Patient reports of mood changes — sadness, anxiety, anhedonia, suicidal ideation — on GLP-1 medications (Ozempic, Wegovy, Mounjaro, Zepbound) are real and worth taking seriously, even though the FDA's January 2026 review of 91 trials found no causal link at the population level.
Read the guideImportant: Don’t stop or adjust antidepressants on your own. Even mild side effects deserve a clinical conversation, and dose changes need to be coordinated with your prescriber to avoid discontinuation syndrome or depression breakthrough.
These pages describe what side effects are, why they happen, and what options exist — they are not medical advice and don’t replace your prescriber.