Symptom Checker
Step 4: Read and complete the decision guide to learn more about your symptoms.
Blacking Out, Fainting, or Loss of Consciousness
That's good.
Lightheadedness is often caused by more than one factor. And if blood pressure drops quickly, you can pass out.
Many medications cause lightheadedness with standing. Even if a medication is not the primary cause, it may be a significant contributor.
Types of medications that most often cause postural hypotension (a drop in blood pressure due to a change in body position) and lightheadedness with standing include:
- Blood pressure medicines
- Beta blockers
- Calcium channel blockers
- Diuretics (water pills)
- Nitroglycerin and other nitrates
- Tricyclic antidepressants
Do you take any of the above medications?
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