Oyster shell and Vitamin c drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Oyster shell (calcium) and Vitamin c (l-ascorbic acid). Common drug interactions include cognitive disorder among females and blood creatine phosphokinase increased among males.

The phase IV clinical study analyzes what interactions people have when they take Oyster shell and Vitamin c. It is created by eHealthMe based on reports of 83 people who take the same drugs from the FDA, and is updated regularly.

What is Oyster shell?

Oyster shell has active ingredients of calcium. eHealthMe is studying from 731 Oyster shell users. Check the latest studies of Oyster shell.

What is Vitamin c?

Vitamin c has active ingredients of l-ascorbic acid. It is often used in immune response. eHealthMe is studying from 92,472 Vitamin c users. Check the latest studies of Vitamin c.

On Jul, 29, 2026

83 people who take Oyster shell and Vitamin c together, and have interactions are studied.

Oyster shell and Vitamin c drug interactions.

What are the common drug interactions of Oyster Shell and Vitamin C, by gender? *:

female:

Cognitive disorder (mental health disorders affects learning, memory, perception, and problem solving)
Cold sweat
Contusion (a type of hematoma of tissue in which capillaries)
Coronary artery occlusion (complete obstruction of blood flow in a coronary artery)
Cough
Cystitis interstitial (unknown cause characterized by bladder pain)
Death
Depressed mood
Disturbance in attention
Diverticulitis (digestive disease which involves the formation of pouches (diverticula) within the bowel wall)

male:

Blood creatine phosphokinase increased
Myositis (inflammation of the muscles)
Memory impairment
Pulmonary oedema (fluid accumulation in the lungs)
Adverse drug reaction
Anxiety
Arthralgia (joint pain)
Asthenia (weakness)
Cardiac disorder
Cardiac failure acute

What are the common drug interactions of Oyster Shell and Vitamin C, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

Chest discomfort
Palpitations (feelings or sensations that your heart is pounding or racing)

40-49:

Fatigue (feeling of tiredness)
Headache (pain in head)
Arthralgia (joint pain)
Asthenia (weakness)
Depressed mood
Disturbance in attention
Insomnia (sleeplessness)
Nausea (feeling of having an urge to vomit)
Neutrophil count decreased (less than normal number of neutrophil a type of blood cell)
Pain

50-59:

Drug ineffective
Dyspnoea (difficult or laboured respiration)
Gastrointestinal haemorrhage (bleeding gastrointestinal tract)
Hospitalisation
Hypertension (high blood pressure)
Hypotension (abnormally low blood pressure)
Intervertebral disc protrusion (spinal disc protrusion)
Joint hyperextension (a joint is overstretched or ""bent backwards)
Malaise (a feeling of general discomfort or uneasiness)
Muscle spasms (muscle contraction)

60+:

Pain
Hypokalaemia (low potassium)
Blood pressure increased
Dehydration (dryness resulting from the removal of water)
Diarrhoea
Feeling cold
Gait disturbance
Hypertension (high blood pressure)
Influenza
Intervertebral disc protrusion (spinal disc protrusion)

What are the existing conditions these people have? *

Rheumatoid Arthritis (a chronic progressive disease causing inflammation in the joints): 11 people, 13.25%
Multiple Myeloma (cancer of the plasma cells): 11 people, 13.25%
Pain: 6 people, 7.23%
Narcolepsy (brain's inability to regulate sleep-wake cycles normally): 6 people, 7.23%
Immunodeficiency Common Variable: 6 people, 7.23%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 5 people, 6.02%

* Approximation only. Some reports may have incomplete information.

Do you take Oyster shell and Vitamin c?

- 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