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Commonly Used Medications

1. Have You Been Treated With Antibiotics?

Have you taken vancomycin, penicillin or amoxicillin for at least seven days within the past five years? OR, have you had an allergic reaction to these antibiotics within the past five years? Are you 18 to 70 years of age?

If so, you may be able to participate in a research study being done to learn why some people are allergic to certain antibiotics. The study involves two to four visits and two to four blood draws. Volunteers will be paid for their time.

Please call 410-550-2120.

PI: N. Franklin Adkinson, M.D.

2. Child Gaining Weight on Medication?

Mark Riddle, M.D., and colleagues in the Johns Hopkins Division of Child and Adolescent Psychiatry are conducting a treatment research study funded by the National Institute of Mental Health. The goal of the study is to find improved treatments for youth who have a have gained weight while taking antipsychotic medication.

We are currently seeking children ages 8-19 who are taking olanzapine (Zyprexa®), quetiapine (Seroquel®), risperidone (Risperdal®), aripiprazole (Abilify®), or ziprasidone (Geodone®) and have gained a significant amount of weight in the past year while taking one of these medications. Consenting children who meet eligibility criteria will receive a medical and psychiatric evaluation and will be assigned to one of three groups: 1) stay on current medication, 2) switch from current medication to aripiprazole (Abilify®) or perphenazine (Trilafon®), 3) stay on current medication and add metformin (Glucophage®). Participants receive study-related evaluations and treatment at no cost.

For further information, call 410-614-5174.

PI: Mark Riddle, M.D.

3. Have you ever taken prescription pain pills?

If you have ever taken prescription pain pills for a medical condition, such as a broken bone or dental surgery, we need you for a research study at the National Institute on Drug Abuse (NIDA).

The purpose of the study is to learn more about how opiate pain medication affects the body and brain. Both inpatient and outpatient visits are required.

You may be able to participate if you:

  • Are 21-55 years old;
  • Have used opiate pain pills in the past for a medical or dental condition; and
  • Don’t smoke cigarettes.

There is no cost to participate. You will receive money for your time and travel.

This study takes place on the Johns Hopkins Bayview campus in east Baltimore and at the NIH Clinical Center in Bethesda, Maryland.

This study is sponsored by the National Institute on Drug Abuse (NIDA), the National Institute on Alcohol Abuse and Alcoholism (NIAAA), the National Institutes of Health (NIH) and the U.S. Department of Health and Human Services. 

For a confidential screening, call 1-800-535-8254. Visit for more information.

PI: Markus Heilig, Ph.D.