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

Summary:

Drug interactions are reported among people who take Macrobid (nitrofurantoin; nitrofurantoin, macrocrystalline) and Lys (lysine). Common drug interactions include alopecia among females.

The phase IV clinical study analyzes what interactions people have when they take Macrobid and Lys. It is created by eHealthMe based on reports of 31 people who take the same drugs from the FDA, and is updated regularly.

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.

What is Lys?

Lys has active ingredients of lysine. eHealthMe is studying from 16,532 Lys users. Check the latest studies of Lys.

On Jul, 15, 2026

31 people who take Macrobid and Lys together, and have interactions are studied.

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

female:

Alopecia (absence of hair from areas of the body)
Depression
Dermatitis diaper (diaper rash is a common form of inflamed skin)
Dizziness
Fatigue (feeling of tiredness)
Feeding disorder (when children refuse to eat certain food groups)
Feeling hot
Gastrointestinal infection (infection of stomach and intestine)
Hemiparesis (weakness on one side of the body)
Hypersensitivity

male:

n/a

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Activities of daily living impaired
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety
Emotional distress
Fear
Injury
Pain
Painful respiration
Pulmonary embolism (blockage of the main artery of the lung)
Sleep disorder due to a general medical condition

30-39:

n/a

40-49:

Allergy to animal

50-59:

Amnesia (deficit in memory caused by brain damage, disease, or psychological trauma)
Depression
Diarrhoea
Headache (pain in head)
Infusion related reaction
Injection site nerve damage
Oral herpes (viral infection of mouth)
Poor venous access
Retching (strong involuntary effort to vomit)
Stress

60+:

Alopecia (absence of hair from areas of the body)
Arthralgia (joint pain)
Dizziness
Fatigue (feeling of tiredness)
Feeding disorder (when children refuse to eat certain food groups)
Feeling hot
Gastrointestinal infection (infection of stomach and intestine)
Hemiparesis (weakness on one side of the body)
Hypersensitivity
Joint stiffness

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 7 people, 22.58%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 6 people, 19.35%
High Blood Cholesterol: 5 people, 16.13%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 5 people, 16.13%
Gait Disturbance: 4 people, 12.90%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 4 people, 12.90%
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 4 people, 12.90%
Type 2 Diabetes: 3 people, 9.68%
Diarrhea: 3 people, 9.68%
High Blood Pressure: 3 people, 9.68%

* Approximation only. Some reports may have incomplete information.

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