Ultracet and Macrobid drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Ultracet (acetaminophen; tramadol hydrochloride) and Macrobid (nitrofurantoin; nitrofurantoin, macrocrystalline). Common drug interactions include dizziness among females and anxiety among males.

The phase IV clinical study analyzes what interactions people have when they take Ultracet and Macrobid. It is created by eHealthMe based on reports of 39 people who take the same drugs from the FDA, and is updated regularly.

What is Ultracet?

Ultracet has active ingredients of acetaminophen; tramadol hydrochloride. It is often used in pain. eHealthMe is studying from 6,351 Ultracet users. Check the latest studies of Ultracet.

What is Macrobid?

Macrobid has active ingredients of nitrofurantoin; nitrofurantoin, macrocrystalline. It is often used in urinary tract infection. eHealthMe is studying from 9,215 Macrobid users. Check the latest studies of Macrobid.



On Jul, 31, 2026

39 people who take Ultracet and Macrobid together, and have interactions are studied.

Ultracet and Macrobid drug interactions.

What are the common drug interactions of Ultracet and Macrobid, by gender? *:

female:

  1. Dizziness
  2. Dyskinesia (abnormality or impairment of voluntary movement)
  3. Dysphemia (stammering or stuttering)
  4. Excessive eye blinking (excessive blinking is dry eyes)
  5. Gallbladder disorder
  6. Haematuria (presence of blood in urine)
  7. Hostility
  8. Arthralgia (joint pain)
  9. Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder)
  10. Fall

male:

  1. Anxiety
  2. Blood cholesterol increased
  3. Dysstasia (difficulty in standing)
  4. Hypokinesia (decreased bodily movement)
  5. Limb discomfort (discomfort in leg)
  6. Neutropenia (an abnormally low number of neutrophils)
  7. Peripheral swelling
  8. Platelet count decreased
  9. Somnolence (a state of near-sleep, a strong desire for sleep)
  10. Dyspnoea (difficult or laboured respiration)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

  1. Anxiety
  2. Bipolar i disorder (mood disorder that is characterized by at least one manic or mixed episode)
  3. Fibromyalgia (a long-term condition which causes pain all over the body)
  4. Mania (a state of abnormally elevated or irritable mood)
  5. Neuropathy peripheral (surface nerve damage)
  6. Renal failure (kidney dysfunction)
  7. Systemic lupus erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue)
  8. Chronic kidney disease

40-49:

  1. Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
  2. Arthralgia (joint pain)
  3. Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder)
  4. Dependence
  5. Drug abuse
  6. Drug ineffective
  7. Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation)
  8. Eating disorder
  9. Fall
  10. Fatigue (feeling of tiredness)

50-59:

  1. Fall
  2. Gallbladder disorder
  3. Injury
  4. Insomnia (sleeplessness)
  5. Joint effusion (presence of extra fluid in joint covering)
  6. Muscle spasms (muscle contraction)
  7. Myofascial pain syndrome (a painful condition that affects the muscles and the sheath of the tissue)
  8. Osteoporosis (bones weak and more likely to break)
  9. Panic reaction
  10. Postoperative infection

60+:

  1. Anxiety
  2. Drug hypersensitivity
  3. Blood glucose increased
  4. Drooling (drop saliva uncontrollably from the mouth)
  5. Dry mouth
  6. Dysarthria (speech disorder)
  7. Dyskinesia (abnormality or impairment of voluntary movement)
  8. Dysphagia (a condition in which swallowing is difficult or painful)
  9. Dysphemia (stammering or stuttering)
  10. Erythema (redness of the skin)

What are the existing conditions these people have? *

  1. High Blood Pressure: 14 people, 35.90%
  2. Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 12 people, 30.77%
  3. Fibromyalgia (a long-term condition which causes pain all over the body): 10 people, 25.64%
  4. Depression: 9 people, 23.08%
  5. Osteoarthritis (a joint disease caused by cartilage loss in a joint): 8 people, 20.51%
  6. Insomnia (sleeplessness): 8 people, 20.51%
  7. Stress And Anxiety: 7 people, 17.95%
  8. Restless Leg Syndrome (a powerful urge to move your legs): 7 people, 17.95%
  9. Hypertriglyceridaemia (excess of triglycerides in the blood): 6 people, 15.38%
  10. Urinary Incontinence (inability to control the flow of urine and involuntary urination): 6 people, 15.38%

* Approximation only. Some reports may have incomplete information.

Do you take Ultracet and Macrobid?

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Related studies:

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

Browse all drug interactions of Ultracet and Macrobid:

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 Ultracet:

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 Macrobid:

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 Ultracet 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 Macrobid 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 acetaminophen; tramadol hydrochloride and nitrofurantoin; nitrofurantoin, macrocrystalline (the active ingredients of Ultracet and Macrobid, respectively), and Ultracet and Macrobid (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.

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