Dive Health & Safety
Can you scuba dive with high blood pressure?
Usually yes. Divers Alert Network says controlled high blood pressure is not a contraindication for diving, though it is a heart-risk factor. What matters is that it's controlled, your heart and kidneys are healthy, and your medication doesn't cause side effects that affect you in the water. Never stop blood pressure medication before diving, and allow several weeks after any change.
By 71 Guardians · Published 19 Oct 2026
Is high blood pressure a reason not to dive?
Not if it's controlled, according to DAN. Your doctor should check for any damage to the heart or kidneys and screen regularly for coronary artery disease, and confirm you can handle 5–10 minutes of strenuous exertion — emergencies can demand it.
Which medicines matter for divers?
- Beta-blockers: can reduce peak exercise capacity and affect the airways — usually minor for recreational diving.
- ACE inhibitors: may be preferred for divers, but can cause a persistent dry cough.
- Calcium channel blockers: can cause light-headedness when standing up.
- Diuretics: need attention to hydration and blood electrolytes.
What about changing medication?
Allow several weeks to see how a new or changed medicine affects you before diving, and never stop taking blood pressure medication to dive.
Frequently asked questions
Should I stop my tablets before a dive?
No — DAN says divers should never stop blood pressure medication before diving.
Do I need a doctor's approval?
If the diver medical questionnaire asks for it, yes. Ask a doctor who knows diving medicine.
Questions before you dive with us?
Message our team on WhatsApp — we're divers in Hurghada and happy to help.
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- Hypertension — Divers Alert Network (DAN)