Wellbutrin generic (bupropion): the antidepressant that spares desire

Wellbutrin generic is bupropion, and the reason it keeps its place in a catalogue built around sexual medicine is simple arithmetic: it is the one antidepressant that does not flatten desire. SSRIs cause sexual dysfunction in a third to a half of the people who take them. Bupropion, which works on dopamine and noradrenaline and leaves serotonin alone, causes it at roughly the rate of placebo — and in several trials it improved desire in people who had none to begin with.

Where it is the obvious choice

Three situations. A person who needs treatment for depression and has already lost sexual function to an SSRI, where switching molecule is the cleanest fix. A person starting treatment who tells the prescriber in advance that sexual side effects would be a deal-breaker. And a person with depression whose dominant symptoms are fatigue, flatness and inability to get started, because the activating profile suits that picture better than a sedating drug does.

It is also licensed, in a different brand and formulation, for smoking cessation — the same molecule as varenicline's main alternative. Someone treating depression and trying to stop smoking is getting two indications from one tablet, which is worth raising with a prescriber rather than discovering by accident.

Where it is the wrong choice

Bupropion lowers the seizure threshold, and this is the hard limit on its use. A seizure history rules it out. So does bulimia or anorexia, current or past, because the risk is concentrated in that group. So does abrupt alcohol or benzodiazepine withdrawal, and so does an MAOI within fourteen days.

It is a poor choice in prominent anxiety: the activation that helps a fatigued patient makes an anxious one worse, and for generalised anxiety or panic an SSRI such as escitalopram or buspirone is the better starting point. Insomnia is frequent, which is why the second dose of an immediate-release regimen never goes near bedtime.

Doses and the two formulations

Prolonged-release 150 mg once each morning is the usual start. After a week, 300 mg once daily if needed; that is the maximum for the extended-release form. Immediate-release dosing is 100 mg two or three times daily with at least six hours between doses, which exists mainly for fine adjustment and carries the higher seizure risk of a sharp peak.

Never crush or split the prolonged-release tablet. The entire point of the formulation is a flattened peak concentration, and a crushed tablet delivers an immediate dose that is both above the safe single limit and the reason the seizure risk figures differ between forms.

Prices by strength and pack

Indicative prices in US dollars for the prolonged-release tablets.

Side effects, in order of how often they stop treatment

Insomnia leads, followed by dry mouth, headache, nausea, tremor and agitation. Blood pressure rises slightly in some people and should be checked after a few weeks, particularly in anyone already treated for hypertension. Weight tends to fall rather than rise, which distinguishes it from most of the alternatives.

The seizure risk at prolonged-release doses up to 300 mg is around one in a thousand — low, but not zero, and higher in the excluded groups listed above. Bupropion is also a strong CYP2D6 inhibitor, so it raises levels of some beta blockers, antipsychotics, tricyclics and tamoxifen, and it blunts the effect of codeine and tramadol by blocking their conversion to active form.

Switching from an SSRI without a gap in treatment

The usual approach is a cross-taper: the SSRI comes down over two to four weeks while bupropion is started and built up, so there is no unmedicated window. The exception is fluoxetine, whose active metabolite persists for weeks after the last dose and which therefore needs a longer and more careful overlap — relevant to anyone currently on fluoxetine.

An alternative to switching is addition: keeping the SSRI that is working for mood and adding low-dose bupropion for the sexual side effects. The evidence for that is weaker than for switching but it is used, and it avoids risking the response that was achieved. Either route is a prescriber's decision rather than a self-managed one, and both are more durable when the psychological side of the problem is addressed in parallel — the studio's psicoterapia page describes that work. The rest of this group sits under antidepressants.

Questions people actually ask

Will it undo the sexual side effects of my current antidepressant?

If they are caused by the SSRI, switching usually resolves them within two to four weeks. If desire was already low before any medication, the drug is not the cause and changing it will not fix it.

Is it a stimulant?

No, though it feels activating. It acts on dopamine and noradrenaline reuptake, which is why it can improve energy and cause insomnia, but it is not an amphetamine and is not controlled.

Can I drink alcohol on it?

Keep it low. Alcohol tolerance can change, and heavy drinking or abrupt withdrawal from heavy drinking raises seizure risk on this drug specifically.

Why can I not take it if I have had an eating disorder?

Seizures were reported disproportionately in patients with bulimia in the early trials, and the exclusion has stayed in place since. It is one of the few absolute rules attached to the molecule.

The label these figures come from

Dose limits, seizure-risk figures, formulation rules and contraindications follow the FDA prescribing information for bupropion, and the comparative sexual side-effect profile follows the NICE guideline on depression in adults. This page is information, not a prescription.