Alphagan and Lotrel drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Alphagan (brimonidine tartrate) and Lotrel (amlodipine besylate; benazepril hydrochloride). Common drug interactions include aortic arteriosclerosis among females and aortic arteriosclerosis among males.

The phase IV clinical study analyzes what interactions people have when they take Alphagan and Lotrel. It is created by eHealthMe based on reports of 48 people who take the same drugs from the FDA, and is updated regularly.

What is Alphagan?

Alphagan has active ingredients of brimonidine tartrate. It is often used in glaucoma. eHealthMe is studying from 9,981 Alphagan users. Check the latest studies of Alphagan.

What is Lotrel?

Lotrel has active ingredients of amlodipine besylate; benazepril hydrochloride. It is often used in high blood pressure. eHealthMe is studying from 13,571 Lotrel users. Check the latest studies of Lotrel.



On Aug, 08, 2026

48 people who take Alphagan and Lotrel together, and have interactions are studied.

Alphagan and Lotrel drug interactions.

What are the common drug interactions of Alphagan and Lotrel, by gender? *:

female:

  1. Aortic arteriosclerosis (hardening of the aortic arteries)
  2. Blood calcium increased
  3. Blood urea increased
  4. Breast cancer recurrent
  5. Breast hyperplasia (accumulation of abnormal cells in a breast duct)
  6. Dehydration (dryness resulting from the removal of water)
  7. Dermatitis exfoliative (widespread scaling of the skin, often with itching (pruritus), skin redness (erythroderma), and hair loss)
  8. Drug ineffective
  9. Dry skin
  10. Eye infection bacterial

male:

  1. Aortic arteriosclerosis (hardening of the aortic arteries)
  2. Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
  3. Anaemia (lack of blood)
  4. Left ventricular dysfunction
  5. Abdominal distension
  6. Abdominal pain
  7. Abdominal pain upper
  8. Angina pectoris (chest pain due to ischemia of the heart muscle)
  9. Aortic aneurysm (enlargement of an aortic artery caused by a weakening of the artery wall)
  10. Aortic valve incompetence

What are the common drug interactions of Alphagan and Lotrel, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

n/a

50-59:

  1. Breast cancer female
  2. Breast cancer metastatic
  3. Metastases to lymph nodes (cancer spreads to lymph node)
  4. Multiple sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath)
  5. Pyrexia (fever)
  6. Thrombocythaemia (an increased number of platelets in the circulating blood)
  7. Abdominal pain
  8. Blood urea increased
  9. Breast cancer recurrent
  10. Breast hyperplasia (accumulation of abnormal cells in a breast duct)

60+:

  1. Oedema peripheral (superficial swelling)
  2. Pain
  3. Pruritus generalised (generalized itching)
  4. Skin discolouration (change of skin colour)
  5. Skin hyperpigmentation (disorders affect the colour of your skin)
  6. Skin induration (an abnormally hard spot or area on the skin)
  7. Skin plaque (red, scaly patches to appear on the skin)
  8. Skin tightness
  9. Blood glucose increased
  10. Hypotension (abnormally low blood pressure)

What are the existing conditions these people have? *

  1. Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 7 people, 14.58%
  2. Arthritis (form of joint disorder that involves inflammation of one or more joints): 7 people, 14.58%
  3. Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 4 people, 8.33%
  4. Osteoporosis (bones weak and more likely to break): 3 people, 6.25%
  5. High Blood Cholesterol: 3 people, 6.25%

* Approximation only. Some reports may have incomplete information.

Do you take Alphagan and Lotrel?

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Related studies:

Effectiveness of, side effects of, and alternative drugs to the 2 drugs:

Browse all drug interactions of Alphagan and Lotrel:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Sub-studies by gender and age:

Female: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Male: 0-1 2-9 10-19 20-29 30-39 40-49 50-59 60+

Browse all side effects of Alphagan:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all side effects of Lotrel:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Alphagan and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

Browse all interactions between Lotrel and drugs from A to Z:

a b c d e f g h i j k l m n o p q r s t u v w x y z

How the study uses the data?

The study uses data from the FDA. It is based on brimonidine tartrate and amlodipine besylate; benazepril hydrochloride (the active ingredients of Alphagan and Lotrel, respectively), and Alphagan and Lotrel (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in the study.

How to use the study?

DO NOT STOP MEDICATIONS without first consulting your doctor. If there are any serious or long term adverse effects discovered in the study, discuss the study with your doctor to ensure that proper medication management will be in place if applicable.

Who is eHealthMe?

With medical big data and proven AI/ML algorithms, eHealthMe provides a platform for everyone to run phase IV clinical trials. We study millions of patients and 5,000 more each day. Results of our real-world drug study have been referenced on 800+ peer-reviewed medical publications, including The Lancet, Mayo Clinic Proceedings, and Nature. Our analysis results are available to researchers, health care professionals, patients (testimonials), and software developers (open API).

WARNING, DISCLAIMER, USE FOR PUBLICATION

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on eHealthMe.com is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only. Our phase IV clinical studies alone cannot establish cause-effect relationship. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.



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