Medications to avoid for patients

Medications and Patients with Alzheimer’s Disease- What to Avoid
Gaby Thai, M.D.

Doctors are often asked whether there are any medications that someone with Alzheimer’s disease should avoid. Patients with Alzheimer’s disease may need medicines to treat symptoms of the disease, as well as for other health problems such as bladder incontinence, mood disturbances, high blood pressure, etc…However, when a person takes many medications, there is an increased risk of adverse effects, including confusion, mood swings, sleepiness, and worsening memory problems. Some medications can worsen symptoms of Alzheimer’s disease and should be avoided, if at all possible.

Some sedatives or hypnotics, such as benzodiazepines and barbiturates, can cause drowsiness, confusion, increased cognitive impairment, slowed reaction, and worsening balance leading to falls. Sleep aids usually have the same effects. Examples of sedatives to avoid include the benzodiazepines diazepam (Valium), lorazepam (Ativan), temazepam (Restoril), triazolam (Halcion), and sleep aids zolpidem (Ambien), eszopiclone (Lunesta), and zaleplon (Sonata).

Certain antidepressants, such as the older tricyclic antidepressants amitriptyline (Elavil), nortriptyline (Pamelor), and imipramine (Tofranil), can cause sedation and worsening cognition. The tricyclic antidepressants have anticholinergic effects, meaning that they can further suppress the activity of acetylcholine, one of the main brain cell messenger chemicals whose activity is reduced by Alzheimer’s disease. For low mood and irritability in patients with Alzheimer’s, the SSRI (selective serotonin reuptake inhibitor) antidepressants including citalopram (Celexa), fluoxetine (Prozac), paroxetine (Paxil), sertraline (Zoloft) and the SARI (serotonin antagonist and reuptake inhibitor) such as trazodone (Desyrel) can be considered instead.

Antipychotics are sometimes given to treat behavioral symptoms such as agitation, aggressiveness, hallucinations and delusions. However, both the older antipsychotic drugs such as haloperidol (Haldol) and the newer atypical antipsychotics such as risperidone (Risperdal), olanzapine (Zyprexa) can cause serious side effects including sedation, confusion, and sometimes Parkinsonian-like symptoms. Studies have shown that both atypical and older antipsychotics are associated with increased risk of death in elderly dementia patients. These drugs should not be used routinely, and if needed, the minimum dosage should be used for the minimum amount of time, under careful supervision of an experienced clinician.

Patients and caregivers should also be cautious of over-the-counter medicines containing diphenhydramine (Benadyl). Diphenhydramine is an antihistamine that tends to make people drowsy. It also has anticholinergic effects that may result in confusion and worsening cognition. Diphenhydramine is found in sleep aids such as Compoz, Nytol, Sominex, Unisom, and also in “night time” or “pm” version of popular pain relievers and cold and sinus remedies.

In essence, patients with Alzheimer’s disease are particularly vulnerable to side effects from various medications. It is best to consult with your doctors and pharmacists to learn about the benefits and potential adverse effects of any new treatment therapy, including seemingly benign over the counter remedies.


 

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