Supplements With Blood Pressure Medication: What to Ask Before You Add BloodPril
Quick answerAsk your doctor or pharmacist first, every time. L-arginine and L-citrulline may lower blood pressure, so they can add to any blood pressure drug, including lisinopril, and to nitrates or sildenafil-type drugs. Pressure could drop too low. Never stop, skip or change a prescribed medicine because of a supplement. Bring a full list to your next visit.
- 60-day satisfaction window
- Shipping cost shown before you pay
Can you take supplements with blood pressure medication?
Sometimes, but never as a guess. Some supplements are fine with blood pressure medicine. Others can push your numbers in the wrong direction or add to what your pills already do.
Supplements do not go through FDA approval before they are sold (FDA, Q&A on Dietary Supplements). So no one has checked how a given capsule works with your exact medicines. That job falls to you, your doctor and your pharmacist.
Rule number one
Never stop, skip or change a prescribed blood pressure medicine because of a supplement. BloodPril is a dietary supplement, not a blood pressure medicine, and it is not a substitute for one.
Nearly half of U.S. adults have high blood pressure (CDC, High blood pressure facts). Many of them also take vitamins or supplements. That overlap is why this question comes up so often.
Why do arginine and citrulline matter with blood pressure drugs?
L-arginine and L-citrulline are building blocks for nitric oxide, which helps blood vessels relax. In trials, gram doses lowered blood pressure a little. That small effect is the reason for caution.
Your medicine already lowers your pressure. Add something else that may lower it, and the two effects can stack. Mayo Clinic warns that arginine might make pressure drop too low with blood pressure drugs, nitroglycerin or sildenafil (Mayo Clinic, L-arginine). Memorial Sloan Kettering says combining arginine with blood pressure drugs may not be safe (MSKCC, Arginine). WebMD gives a similar note for citrulline (WebMD, L-citrulline).
| Drug type | Common examples | Why ask first | Source |
|---|---|---|---|
| ACE inhibitors | Lisinopril, enalapril | Arginine or citrulline may add to the drop in pressure | (Mayo Clinic, L-arginine) |
| ARBs | Losartan, valsartan | Same added effect on pressure | (MSKCC, Arginine) |
| Calcium channel blockers | Amlodipine, diltiazem | Same added effect on pressure | (MSKCC, Arginine) |
| Beta blockers | Metoprolol, atenolol | Same added effect on pressure | (MSKCC, Arginine) |
| Diuretics (water pills) | Hydrochlorothiazide, chlorthalidone | Same added effect on pressure | (MSKCC, Arginine) |
| Nitrates | Nitroglycerin, isosorbide | Pressure may drop too low | (Mayo Clinic, L-arginine) |
| Sildenafil-type drugs | Sildenafil, tadalafil | Pressure may drop too low | (Mayo Clinic, L-arginine) |
Can I take L-arginine with lisinopril?
People often search for L-arginine and lisinopril by name. Lisinopril is an ACE inhibitor, one of the most common blood pressure pills. The honest answer is the same as for any blood pressure drug: ask your doctor first.
Arginine may add to the effect of lisinopril, just as it may with amlodipine, losartan or a water pill (Mayo Clinic, L-arginine). Your doctor knows your dose, your kidneys and your other medicines. They may say yes, say no or ask you to log your numbers closely.
Why this is not a yes-or-no answer online
Two people on the same pill can respond very differently. One may run low already. Another may still sit above target. Only someone who knows your readings can weigh that.
Why should you never stop your blood pressure medicine?
Your medicine has been tested for blood pressure in large trials. A supplement has not been tested in the same way. Swapping one for the other trades proven care for an unknown.
Some blood pressure drugs can also cause problems if stopped suddenly. And high blood pressure often has no symptoms (MedlinePlus, High blood pressure), so you may feel fine while your numbers climb.
Safe habits
- Keep taking your medicine exactly as prescribed
- Ask before adding, changing or stopping any supplement
- Log home readings so your doctor can see trends
- Keep healthy habits such as the DASH eating plan and less salt
Habits to avoid
- Stopping a pill because a supplement seems to help
- Taking extra capsules to chase a lower number
- Skipping doses on days you feel fine
- Starting several new products at once
What are the warning signs to watch for?
If a supplement adds to your medicine, the first sign is often feeling too low. Know these signs before you start anything new.
Signs your pressure may be too low
- Dizziness or lightheadedness, especially when you stand up
- Blurred vision
- Unusual tiredness or weakness
- Feeling faint, or fainting
- Nausea or cold, clammy skin
If you notice these, sit or lie down, check your pressure and call your doctor. Hold the supplement until you have talked.
High readings can be an emergency too
A reading above 180/120 with chest pain, shortness of breath, back pain, numbness, weakness, vision change or trouble speaking: call 911 (AHA, Blood pressure readings).
How do you talk to your doctor or pharmacist about a supplement?
A short, organized list makes the talk fast and useful. Pharmacists are easy to reach and can check interactions on the spot. Your doctor can weigh your history.
| What to bring | What to write down | Example |
|---|---|---|
| Each prescription | Name, dose and time of day | Lisinopril 10 mg, morning |
| Over-the-counter medicines | Pain relievers, cold medicines, sleep aids | Ibuprofen, as needed |
| Each supplement | Name, ingredients and amount per serving | BloodPril: 500 mg blend, 1 capsule |
| The supplement label | A photo of the Supplement Facts panel | Phone photo of the bottle |
| Your home readings | One to two weeks of morning and evening numbers | Cuff log or app export |
| Your questions | What you want to know before you start | Could this drop my pressure too low? |
- 01
Is this safe with my current medicines?
Ask about each prescription by name, including nitrates or sildenafil-type drugs.
- 02
Does my health history change the answer?
Mention any heart attack, heart disease, kidney or liver disease, pregnancy or upcoming surgery.
- 03
What should I watch for?
Ask which symptoms mean you should stop and call.
- 04
How should I track my numbers?
Agree on how often to measure and when to report back.
For the BloodPril label itself, the Supplement Facts page has a readable copy you can print or show on your phone.
Who should be extra careful?
After a heart attack
An arginine trial after heart attack was stopped early with more deaths in the arginine group (Schulman et al., JAMA 2006).
Heart disease
Talk to your cardiologist before any arginine or citrulline product.
Kidney or liver disease
These organs process amino acids. Ask your specialist first.
Pregnant or nursing
The label asks you to consult a physician before use.
Surgery planned
Tell your surgical team about every supplement you take.
Many daily medicines
More pills means more chances for an interaction. A pharmacist review helps.
Our who BloodPril is for page and the side effects page go into more detail on each group.
If your doctor says yes, how should you start?
If your doctor is comfortable with a supplement, a careful start helps you both see what happens. Keep it simple and change one thing at a time.
- Week before
Log a baseline: two or three readings each morning and evening.
- Day 1
Start at the lowest label serving. For BloodPril, that is 1 capsule with an 8 oz glass of water.
- First weeks
Keep your medicine the same. Keep logging at the same times each day.
- Any warning sign
Stop the supplement and call your doctor if you feel dizzy or faint.
- Follow-up
Bring your log. Decide together whether to continue.
Our guide on how to check blood pressure at home shows the cuff steps. If BloodPril is not right for you, the window to ask for a refund is 60 days from purchase; the sales page also asks for at least 30 days of use. The guarantee page has the details.
Supplements with blood pressure medicine FAQ
Can I take L-arginine with blood pressure medication?
Only after your doctor says yes. Mayo Clinic notes arginine might make blood pressure drop too low when combined with blood pressure drugs.
Is it safe to take L-arginine with lisinopril?
Ask your doctor first. Lisinopril lowers blood pressure, and arginine may add to that effect, as it may with any blood pressure drug.
Can L-citrulline be taken with blood pressure pills?
Not without checking. WebMD notes citrulline might lower blood pressure and could add to blood pressure drugs and nitrates.
Can I stop my blood pressure medicine if I take a supplement?
No. A supplement is not a medicine, and stopping some drugs suddenly can be risky. Any change to your medicine is a decision for you and your doctor.
Can I take BloodPril with my blood pressure medicine?
Ask your doctor first. BloodPril contains citrulline and arginine forms, which may add to blood pressure drugs, nitrates and sildenafil-type drugs.
Should I ask a doctor or a pharmacist about supplements?
Either is a good start, and both is better. Pharmacists can check your full medicine list for interactions, while your doctor knows your health history.
What supplements should you avoid with blood pressure medication?
It depends on your drugs and health. Products that may lower blood pressure, like arginine and citrulline, need a doctor's okay first.
What are the signs that blood pressure dropped too low?
Dizziness, lightheadedness when you stand, blurred vision, unusual tiredness or fainting. Sit or lie down, check your pressure and call your doctor.
Does spacing out the supplement and the pill avoid interactions?
Not reliably. Both can affect your pressure for hours, so timing alone may not prevent an added drop. Ask your pharmacist about your exact medicines.
Ready to try BloodPril?
1 capsule a day, 60 per bottle, from $49 a bottle on the 6-bottle pack, with a 60-day satisfaction window. Taking blood pressure medicine? Ask your doctor first.
