Statin Drugs

These drugs are one of the most damaging drugs for the brain and are used to regulate the cholesterol levels. This is due to the fact that ¼ of the brain is composed of cholesterol, needed for thinking, memory, and learning. However, they also cause memory loss and similar adverse effects.

The “Anti” Drugs

All “anti” drugs, such as antihistamines, antibiotics, antidepressants, antipsychotics, antispasmodics, or antihypertensive affect the acetylcholine levels in the body, which is the main neurotransmitter needed for memory and learning.

Its low levels cause blurred vision, memory loss, dementia, delirium, mental confusion, and hallucinations.
Richard C. Mohs, former vice chairman of the Department of Psychiatry at the Mount Sinai School of Medicine, composed the following list which includes 20 drugs which cause memory loss:
Antibiotics (quinolones)
Sleeping pills – Ambien, Lunesta, Sonata
Painkillers – morphine, codeine, heroin
Insulin
Chemotherapy drugs
Epilepsy – Dilantin or phenytoin
Barbiturates – Nembutal, Phenobarbital, Seconal, Amytal
Antipsychotics – Mellaril, Haldol
Parkinson’s disease – atropine, glycopyrrolate, scopolamine
Benzodiazepines – Xanax, Valium, Dalmane, Ativan
Quinidine
Beta blockers
High blood pressure drugs
Interferons
Naproxen
Tricyclic antidepressants
Methyldopa
Lithium
Antihistamines
Steroids
In case you use these drugs, you should consult your doctor and find out if they affect your memory. You can always find a healthier alternative, at least another medications or lifestyle changes.
You should be more physically active, take some supplements, and consume some foods beneficial for the brain, in order to lower the load on it.
You should preserve the brain health in order to remain sharp and healthy in general.

Sources: lovethispic.com, 99easyrecipes.com