There is a case report of a person who gained 95 pounds in a year-and-two-months when put on the antipsychotic drug Clozaril (clozapine).

A standard dose of the antipsychotic drug Clozaril (clozapine) causes an average weight gain of 9.8 pounds in two-and-a-half-months according to recent analysis.

The antipsychotic drug Clozaril (clozapine) causes an average weight gain of 3.7 pounds in one month according to recent paper.

A standard dose of the antipsychotic drug Zyprexa (olanzapine) causes an average weight gain of 9.1 pounds in two-and-a-half-months according to recent analysis.

The antipsychotic drug Zyprexa (olanzapine) causes an average weight gain of 5.1 pounds in one month according to recent paper.

A standard dose of the antipsychotic drug Mellaril (thioridazine), used to treat schizophrenia, causes an average weight gain of only 7 pounds in two-and-a-half-months according to recent analysis.

A standard dose of the antipsychotic drug Risperdal (risperidone) causes an average weight gain of 4.6 pounds in two-and-a-half-months according to recent analysis.

The antipsychotic drug Seroquel (quetiapine) causes an average of weight gain of 9 pounds in two months according to recent study from the University of Miami School of Medicine.

The antipsychotic drug Risperdal (risperidone) causes an average weight gain of 2.2 pounds in one month according to recent paper.

The antipsychotic drug Seroquel (quetiapine) causes an average of weight gain of 4 to 12 pounds in six weeks according to recent review paper from Germany.

A standard dose of the antipsychotic drug Geodon (ziprasidone) causes an average weight gain of only 0.1 pounds in two-and-a-half-months according to recent analysis.

The antipsychotic drug Geodon (ziprasidone) causes an average weight gain of 1.8 pounds in one month according to recent paper.

The anti-convulsant Neurontin (gabapentin) can cause weight gain according to a 1997 study.

The anti-sezure drug Neurontin? (gabapentin) can cause weight gain according to a study which reviewed the weight changes of 44 patients treated with the drug for at least one year.

The anti-psychotic drug Seroquel (quetiapine) is associated with modest weight gain that is not dose-related and does not increase over time according to a recently published review paper about the weight gaining potential of anti-psychotic drugs.

The anti-psychotic drug Geodon (ziprasidone) has a minimal effect on body weight according to a recently published review paper about the weight gaining potential of anti-psychotic drugs. However, it may cause more gastrointestinal side effects, such as an upset stomach or nausea, than drugs such as Zyprexa (olanzapine).

The anti-psychotic drug iloperidone (not available in the U.S.) only causes weight gain in a small percentage of patients according to a recently published review paper about the weight gaining potential of anti-psychotic drugs.

The anti-psychotic drug Abilify (aripiprazole) does cause weight gain according to a recently published review paper about the weight gaining potential of anti-psychotic drugs. However, Abilify (aripiprazole) may lower blood sugar levels as well as blood lipid levels.

The anti-psychotic drug amisulpiride (not available in the U.S.) causes an average weight gain of 3 to 6 pounds according to a recently published review paper about the weight gaining potential of anti-psychotic drugs.

The anti-psychotic drug sertindole (not available in the U.S.) causes an average weight gain of 7.3 pounds in six weeks according to one study and 10.1 pounds after one year according to another study. This according to a recently published review paper about the weight gaining potential of anti-psychotic drugs.

The anti-psychotic drug Risperdal (risperidone) causes an average weight gain of 5 or 6 pounds according to a recently published review paper about the weight gaining potential of anti-psychotic drugs.

The anti-psychotic drug Clozapine (Clozaril) causes an average weight gain of 13 pound in women and 7.3 pounds in men according to a recently published review paper about the weight gaining potential of anti-psychotic drugs.