Cardiovascular
Medicines for Innocent heart murmur
A harmless heart sound, common in children, caused by normal blood flow through a healthy heart — needing no treatment once confirmed.
Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.
Quick answer
What is Innocent heart murmur?
A heart murmur is an extra sound heard through a stethoscope as blood flows through the heart. An "innocent" (or functional) murmur is one that comes from normal blood flow through a normal, healthy heart, rather than from any heart problem.
- How it is treated: An innocent murmur needs no treatment, no restrictions, and no follow-up once it has been confidently identified — reassurance is the key part of care.
- Self-care: No restrictions or treatment are needed for an innocent murmur.
- When to seek help: See a GP if a child with a murmur has symptoms such as breathlessness, poor feeding or growth, going blue, chest pain, fainting, or a family history of heart problems, so it can be assessed and, if needed, an echocardiogram arranged.
What it is
A heart murmur is an extra sound heard through a stethoscope as blood flows through the heart. An "innocent" (or functional) murmur is one that comes from normal blood flow through a normal, healthy heart, rather than from any heart problem. Innocent murmurs are very common in children, and are often heard during a routine check or when a child is unwell with a fever (which speeds up blood flow and makes the murmur more noticeable). They typically sound soft, occur at a particular point in the heartbeat, and change with the child's position or activity. They are harmless and do not mean anything is wrong with the heart. The main task is to distinguish an innocent murmur from the less common murmurs that indicate an actual heart condition.
How it is treated
An innocent murmur needs no treatment, no restrictions, and no follow-up once it has been confidently identified — reassurance is the key part of care. A doctor assesses the murmur and the child, considering its characteristics and whether there are any concerning features or symptoms. In most children with typical innocent murmurs and no worrying features, no further tests are needed. If there is any doubt, or if features suggest the murmur might not be innocent, an echocardiogram (heart ultrasound) can confirm the heart is structurally normal. Innocent murmurs often become quieter or disappear as a child grows. The reassuring message for families is that an innocent murmur is a normal finding and does not affect the child's health, activity or future.
For this condition, these medicines
Medicine classes used for Innocent heart murmur
Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.
Beyond medication
Lifestyle and self-care
No restrictions or treatment are needed for an innocent murmur. Children can be fully active. Reassurance is the main "treatment", with a check only if there are concerning features or symptoms.
When to get help
When to see a doctor
See a GP if a child with a murmur has symptoms such as breathlessness, poor feeding or growth, going blue, chest pain, fainting, or a family history of heart problems, so it can be assessed and, if needed, an echocardiogram arranged.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Innocent heart murmur: frequently asked questions
Is an innocent heart murmur serious?
No — an innocent (functional) murmur comes from normal blood flow through a healthy heart and is harmless. It is common in children, needs no treatment, and often disappears as they grow.
How do doctors know a murmur is innocent?
By its characteristics (soft, at a particular point in the heartbeat, changing with position) and the absence of concerning features or symptoms. If there is any doubt, an echocardiogram confirms the heart is normal.
Sources
Where this is drawn from
- NHS — Heart murmurs
- British Heart Foundation guidance
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