Hypotension
2 medicines
Hypotension is abnormally low blood pressure that can cause dizziness, fainting and fatigue, particularly when standing up quickly, managed with lifestyle changes and, if needed, medicines like midodrine.
Key facts
- Hypotension means blood pressure lower than normal, typically below 90/60 mmHg, which can reduce blood flow to the brain.
- The most common form is orthostatic hypotension, where pressure falls sharply on standing; dehydration, prolonged standing, certain medicines and underlying heart or nerve conditions are frequent triggers.
- Mild cases often respond to more fluids, extra salt, compression stockings and standing up slowly; persistent symptomatic cases may need midodrine.
- Seek urgent care for loss of consciousness, chest pain or confusion alongside a drop in blood pressure.
What is actually going on
Hypotension means blood pressure that is lower than normal, typically below 90/60 mmHg. Many people tolerate low readings without any trouble, but when pressure drops enough to reduce blood flow to the brain, it causes symptoms that range from mild light-headedness to sudden fainting.
Why it happens and who it affects
The most common form is orthostatic hypotension, where pressure falls sharply on standing. This is especially common in older adults, but heat, dehydration from sweating, prolonged standing, certain medicines and underlying heart or nerve conditions are frequent triggers in younger people too.
Managing low blood pressure
Mild cases often respond to simple measures: drinking more fluids, adding a little extra salt to meals, wearing compression stockings, and rising from a seated or lying position slowly. When lifestyle changes are insufficient, medicines that raise vascular tone or increase blood volume may be needed. Midodrine is a commonly used agent for symptomatic orthostatic hypotension. Browse the full heart and blood pressure category for related medicines.
When to see a doctor
Seek urgent care if you lose consciousness, feel chest pain, or experience confusion alongside a drop in blood pressure. See a doctor for recurring dizziness or fainting on standing, since an underlying cause may need specific treatment.
This page is educational and does not replace advice from a doctor or pharmacist who knows your health history.