Lysine and Nac drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Lysine (lysine) and Nac (n - acetyl cysteine). Common drug interactions include dementia among females and vitreous floaters among males.

The phase IV clinical study analyzes what interactions people have when they take Lysine and Nac. It is created by eHealthMe based on reports of 22 people who take the same drugs from the FDA, and is updated regularly.

What is Lysine?

Lysine has active ingredients of lysine. It is often used in herpes labialis (oral herpes simplex). eHealthMe is studying from 16,524 Lysine users. Check the latest studies of Lysine.

What is Nac?

Nac has active ingredients of n - acetyl cysteine. eHealthMe is studying from 855 Nac users. Check the latest studies of Nac.

On Aug, 01, 2026

22 people who take Lysine and Nac together, and have interactions are studied.

What are the common drug interactions of Lysine and Nac, by gender? *:

female:

Dementia (madness)
Dysgeusia (disorder of the sense of taste)
Fungal infection
Herpes zoster
Influenza
Mental status changes (general changes in brain function, such as confusion, amnesia (memory loss), loss of alertness, loss of orientation)
Migraine (headache)
Mobility decreased (ability to move is reduced)
Movement disorder (neurological syndromes where they may be excess of movement or a paucity of movement that is not connected to weakness)
Muscular weakness (muscle weakness)

male:

Vitreous floaters (spots before the eyes)
Anxiety
Dyspnoea (difficult or laboured respiration)
Dysstasia (difficulty in standing)
Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters)
Eye pain
Fatigue (feeling of tiredness)
Gait disturbance
Heart rate increased
Heart rate irregular

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Tendon pain
Vertigo
Vitreous floaters (spots before the eyes)
Weight fluctuation
Anxiety
Asthenia (weakness)
Autoimmune thyroiditis (form of thyroiditis associated with an autoimmune disease)
Balance disorder
Diplopia (double vision)
Disability

30-39:

Nausea (feeling of having an urge to vomit)
Pneumothorax (the presence of air or gas in the cavity between the lungs and the chest wall, causing collapse of the lung)

40-49:

Abdominal discomfort
Acne (skin problems that cause pimples)
Alopecia (absence of hair from areas of the body)
Dizziness
Dysgeusia (disorder of the sense of taste)
Fatigue (feeling of tiredness)
Migraine (headache)
Nasopharyngitis (inflammation of the nasopharynx)
Nausea (feeling of having an urge to vomit)
Oropharyngeal pain

50-59:

Pain
Bedridden
Colitis microscopic (inflammation of colon with diarrhoea and abdominal cramps)
Influenza
Mobility decreased (ability to move is reduced)
Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves)

60+:

Drug ineffective
Abdominal discomfort
Fatigue (feeling of tiredness)
Femur fracture
Micturition urgency (urgency to pass the urine)
Rash macular (small, flat red spots)
Sleep disorder due to a general medical condition
Carcinoma in situ of skin
Irritable bowel syndrome
Neuropathy peripheral (surface nerve damage)

What are the existing conditions these people have? *

Osteoporosis (bones weak and more likely to break): 3 people, 13.64%
Neuropathy Peripheral (surface nerve damage): 3 people, 13.64%
Immunodeficiency Common Variable: 3 people, 13.64%
Multiple Myeloma (cancer of the plasma cells): 2 people, 9.09%
Hot Flush (sudden feelings of heat): 2 people, 9.09%
High Blood Cholesterol: 2 people, 9.09%
Hiatal Hernia (hernia resulting from the protrusion of part of the stomach through the diaphragm): 2 people, 9.09%
General Physical Health Deterioration (weak health status): 2 people, 9.09%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 2 people, 9.09%
Gastric Disorder (disease of stomach): 2 people, 9.09%

* Approximation only. Some reports may have incomplete information.

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