Kevin Leehey, M.D.
1980 E. Ft. Lowell Road, Suite 150 • Tucson, Arizona 85719 • (520) 296-4280 • Fax: (520) 296-3835
ANTIPSYCHOTIC MEDICATIONS ("Atypicals" Page 2)
Used for Psychosis, Schizophrenia, Bipolar Disorder, Severe Impulsive Aggression, Tourette's, Paranoia

Updated 09/10

Download PDF Version

 
Medication
Brand/Generic
Form Dose Schedule Dose Range Most Common Side Effects for Group Pros for Group Cautions for Group

Risperdal
(risperidone)

tablets
.25mg
.50mg
1mg
2mg
3mg
4mg

M tabs
0.5, 1, 2mg

liquid
1mg/1ml
consta
1-3 times daily, often evening only one quarter to 16mg/day depending on age, size, diagnosis, and severity. Sedation, weight gain or appetite increase. Extrapyramidal symptoms (EPS - see page 1) less common than with "typicals." Prolactin increase also less common than typicals but also can occur especially with higher doses. Sun sensitivity, heat intolerance, sexual side effects uncommon. Rarely negative effects on liver or blood count. The "Atypical" antipsychotics are often preferred over the "typicals" as first line treatments for the above conditions.

The "Atypicals" have benefit for mood disorders and may even work as mood stabilizers. Generic risperidone is available.


Invega is an extended smoother release cousin of risperidone (OROS).

Prolactin increase and breast discharge happens more with Risperdal than other atypicals.

Appetite increase or sedation are often more of a concern than EPS or TD (good).

Weight gain and related negative health effects occur most often with Zyprexa and Risperdal but least with Geodon.

Fanapt
iloperidone
1, 2, 4, 6, 8, 10, 12mg tablets   6-12 mg twice daily
Invega
(paliperidone)
Sustenna
3, 6, 9 mg caplets
Once a day or monthly 3 to 12 mg/d  (6 average)
Zyprexa
(olanzapine)
tablets
2.5mg
5mg
7.5mg
10mg
15mg
20 mg

zydis
5mg
10mg
15 mg
20 mg

Injection
Once to twice a day, often evening only 1.25mg to 20mg/day Zyprexa, Clozaril, and Seroquel have lowest risks of EPS. 

Zyprexa, Clozaril, Risperdal, and Seroquel cause the most sedation and weight gain. Abilify and Saphris are in the middle. Geodon is lowest. Directly or indirectly weight gain can lead to diabetes, hypertension, and high cholesterol and triglycerides.

Risperdal and Zyprexa have been available longest, studied the most, have the best track records, are very effective (often rapidly) and have been used enough with kids and the elderly to have shown benefit and safety.

No routine blood tests for any of the group.

All these "atypicals" except Risperdal are still under patent and are quite expensive.

All antipsychotics block the dopamine (D2) receptor. The atypicals also somewhat block serotonin (5HT). Thus it is theoretically possible to increase anxiety or interfere with serotonin meds (SRI, Buspar). However, the atypicals also boost their effects in many cases (good).

Seroquel
(quetiapine)
tablets
25, 50, 100, 200, 300, 400mg

XR 50, 150, 200, 300, 400 mg

Twice daily, sometimes only evening 100mg to 800mg/day total Seroquel has very low risks of EPS. This includes a very low risk of Tardive Dyskinesia (TD) and Neuroleptic Malignant Syndrome (MNS).

Seroquel is not very potent. Thus higher doses are often needed.

In certain situations improved appetite and improved sleep are desired side effects.

Side effects are often less at lower doses. Side effects can often be avoided completely. Sedation is most common.

Cataract risk may be increased slightly by all antipsychotics as well as by some other medicines and health conditions.
Geodon
(ziprasidone)
capsules
20mg
40mg
60mg
80mg

injection
20mg/ml

Twice a day, sometimes once 20 to 160mg/day total, usually Geodon and Seroquel have shorter action and are thus advised to be given a.m. and evenings.

Geodon reportedly causes the least weight gain of the group.

Geodon rarely, if ever, causes weight gain. It is also less likely to cause sedation.

Geodon may worsen or bring out abnormal heart rhythm. Certain patients may thus be best off with one of the others. Checking an EKG may be worthwhile in some cases.
Geodon has a small chance of heart rhythm side effects.
Clozaril
(clozapine)
tablets, scored
25mg
100mg
Once or twice daily 300 to 900mg a day, usually A wide range of nuisance and moderate side effects render Clozaril a hassle too often. Blood count suppression can be dangerous so that weekly blood tests are advised at least at first. Clozaril not only does not cause EPS, especially Tardive Dyskinesia (TD), it actually can treat TD. "Miraculous" benefits have occured with some cases of schizophrenia. I generally do not use Clozaril because of side effects although it may be the most effective.
Abilify
(ariprazole)
tablets
2, 5, 10, 15, 20, 30mg

Discmelt
10, 15mg

liquid
1mg/1ml

Once or twice daily 2 to 45 mg Sleepy, dizzy, weight gain, nausea. All Atypicals help psychosis, mania, and impulsive aggression.  
Saphris
(asenapine)
sublingual tablets
5, 10 mg
Once to often twice a day 5 to 30 mg a day usually 5 to 10mg twice a day Like other atypicals. Moderate weight gain and metabolic changes. Sedation, EPS, akathisia, dizzy FDA approved for schizophrenia and bipolar.  Youth studies and experience is just beginning. 

Simultaneous use of alcohol or cigarettes and especially street drugs should be avoided. All medications should be avoided, if possible, in pregnancy.
This chart is intended to be a summary guide, not a full and complete list.

(atyps1.html)