Lamotrigine and Viagra drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Lamotrigine (lamotrigine) and Viagra (sildenafil citrate). Common drug interactions include atrial fibrillation among females and anxiety among males.

The phase IV clinical study analyzes what interactions people have when they take Lamotrigine and Viagra. It is created by eHealthMe based on reports of 93 people who take the same drugs from the FDA, and is updated regularly.

What is Lamotrigine?

Lamotrigine has active ingredients of lamotrigine. It is often used in bipolar disorder. eHealthMe is studying from 76,638 Lamotrigine users. Check the latest studies of Lamotrigine.

What is Viagra?

Viagra has active ingredients of sildenafil citrate. It is often used in erection problems. eHealthMe is studying from 63,865 Viagra users. Check the latest studies of Viagra.

On Apr, 27, 2026

93 people who take Lamotrigine and Viagra together, and have interactions are studied.

Lamotrigine and Viagra drug interactions.

What are the common drug interactions of Lamotrigine and Viagra, by gender? *:

female:

Atrial fibrillation (fibrillation of the muscles of the atria of the heart)
Blood cholesterol increased
Cardiac pacemaker replacement
Weight increased
Drug ineffective
Nasopharyngitis (inflammation of the nasopharynx)
Pain in extremity
Thirst

male:

Anxiety
Pain
Hernia (hernia happens when part of an internal organ or tissue bulges through a weak area of muscle)
Disturbance in attention
Bone density decreased
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Muscle spasms (muscle contraction)
Blood pressure increased
Hypoaesthesia (reduced sense of touch or sensation)
Sleep apnoea syndrome (a sleep-related disorder in which the effort to breathe is diminished or absent)

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

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

Blood potassium decreased
Chronic obstructive pulmonary disease (a progressive disease that makes it hard to breathe)
Gastrooesophageal reflux disease (stomach contents (food or liquid) leak backwards from the stomach into the oesophagus)
Glycosylated haemoglobin increased
Hernia (hernia happens when part of an internal organ or tissue bulges through a weak area of muscle)
Hypoaesthesia (reduced sense of touch or sensation)
Muscle spasms (muscle contraction)
Obesity (having too much body fat)
Peripheral swelling
Pharyngeal oedema (abnormal accumulation of fluid in the cavities and intercellular spaces of the pharyngeal)

30-39:

Drug ineffective
Overdose
Priapism (prolonged and painful erection that can last from several hours up to a few days)

40-49:

Anxiety
Aspartate aminotransferase increased
Confusional state
Disturbance in attention
Hypercalcaemia (elevated calcium (ca+) level in the blood)
Hyperhidrosis (abnormally increased sweating)
Hypermetabolism (abnormal increase in the body's basal metabolic rate)
Night sweats (sweating in night)
Petit mal epilepsy (absence seizure)
Pain

50-59:

Malaise (a feeling of general discomfort or uneasiness)
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)
Multiple fractures
Myocardial infarction (destruction of heart tissue resulting from obstruction of the blood supply to the heart muscle)
Overdose
Peripheral swelling
Thrombosis (formation of a blood clot inside a blood vessel)
Anhedonia (inability to experience pleasure from activities usually found enjoyable)
Anxiety

60+:

Fatigue (feeling of tiredness)
Insomnia (sleeplessness)
Initial insomnia (feeling of inadequate or poor-quality sleep)
Middle insomnia (difficulty returning to sleep after awakening either in the middle of the night)
Pruritus (severe itching of the skin)
Psychomotor hyperactivity (feelings of extreme restlessness)
Sleep disorder
Somnolence (a state of near-sleep, a strong desire for sleep)
Suicidal ideation
Abdominal discomfort

What are the existing conditions these people have? *

Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 22 people, 23.66%
Depression: 19 people, 20.43%
High Blood Cholesterol: 15 people, 16.13%
Pain: 12 people, 12.90%
Cataplexy (loss of muscle tone accompanied by full conscious awareness): 12 people, 12.90%
Hiv Infection: 11 people, 11.83%
High Blood Pressure: 11 people, 11.83%
Stress And Anxiety: 10 people, 10.75%
Hypersensitivity: 7 people, 7.53%
Gastroesophageal Reflux Disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 7 people, 7.53%

* Approximation only. Some reports may have incomplete information.

Do you take Lamotrigine and Viagra?

- Personalize this study to your gender, age, symptoms and drugs
- Predict drug outcomes for up to one year with AI
- Get an AI agent to monitor your drugs continuously