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Signs of Low Blood Pressure and When They Matter
Signs of low blood pressure include dizziness when you stand up, light-headedness and fainting. MedlinePlus defines low blood pressure as a reading of 90/60 or lower, and says it becomes a problem when it causes dizziness, fainting or, in extreme cases, shock. Some people feel nothing at all, so the number alone does not decide.
Written by the Melonexcare editorsUpdated · 5 min read
No. 01The number
What counts as low blood pressure?
Low blood pressure is a reading of 90/60 or lower, according to MedlinePlus (MedlinePlus, Low blood pressure).
A low number is not always a problem. Some people sit at 90/60 their whole lives and feel fine. Others feel unwell at a slightly higher number, so symptoms count as much as the cuff. If you are unsure, write down the reading, the time and what you were doing, then share it.
What matters is how you feel. MedlinePlus says low pressure is a problem when it causes dizziness, fainting or, in extreme cases, shock (MedlinePlus, Low blood pressure). It also notes that some people feel symptoms when they stand up too quickly, and that medical conditions or certain medicines can cause it.
| Category | Reading |
|---|---|
| Low | 90/60 or lower (MedlinePlus, Low blood pressure) |
| Normal | Under 120 and under 80 (AHA, Blood pressure readings) |
| Elevated | 120-129 and under 80 (AHA, Blood pressure readings) |
No. 02The signs
What are the signs of low blood pressure?
The signs of low blood pressure to watch for are dizziness, light-headedness and fainting, especially when you stand up fast.
Those are the ones MedlinePlus names (MedlinePlus, Low blood pressure). Other things you may notice, such as blurry vision or unusual tiredness, are worth mentioning to your doctor too.
Mild
A brief swim of the head when you stand. It passes in seconds.
Call your doctor
Dizziness that returns, or a near-faint, even once.
Call 911
Fainting with chest pain, trouble breathing or confusion.
Chest pain, jaw or arm pain and shortness of breath are heart attack signs, and the CDC says to call 9-1-1 (CDC, Heart attack symptoms). Read more on heart attack warning signs.
No. 03Daily habits
How can I stand up and move more safely?
To move more safely, rise slowly, sit on the edge of the bed first, and drink water through the day.
These are everyday comforts, not treatment. They simply lower the chance of a fall.
Below is a sample day. Use it as a prompt, and talk with your doctor about anything that does not fit you.
- Breakfast, about 7:30
One capsule with an 8 oz. glass of water. The label sets no time, so pick a meal you never skip. Prescribed medicine keeps its own schedule.
- A cuff check, same time daily
Rest 5 minutes, then take two readings one minute apart and write them down, as the American Heart Association suggests.
- A walk, most days
Adults need 150 minutes of moderate activity a week; a brisk 30 minutes on five days gets there.
- Night, 7 hours or more
Most adults need at least 7 hours. Blood pressure normally dips during sleep.
Home readings from the AHA (AHA, Home monitoring); activity from the CDC (CDC, Adult activity); sleep from the CDC (CDC, Sleep and heart health). The capsule time is a suggestion; follow your label.
- Pause for a breath before you stand.
- Avoid long hot showers if you feel wobbly.
- Keep a chair near the kitchen counter.
No. 04Medicines
Can medicines or supplements cause low blood pressure?
Yes, MedlinePlus says certain medicines can cause low pressure, and sources list supplements such as arginine among things that may push pressure too low with blood pressure drugs (MedlinePlus, Low blood pressure) (Mayo Clinic, L-arginine).
Mayo Clinic lists blood pressure drugs, nitrates and sildenafil as combinations with arginine where pressure may drop too low (Mayo Clinic, L-arginine).
That is why we ask readers to check first. A pharmacist can read your list in minutes, and a note of when the dizziness started helps. Mention any new product, even a gentle one, because timing is often the clue. Bring your cuff log to the visit.
Never stop or change a medicine because of a low reading. Call your doctor, and tell them about every supplement. Take a log of readings from your home cuff; see blood pressure numbers.
No. 05Melonex
Is Melonex safe if my pressure runs low?
Melonex is not shown to be safe for people with low pressure; ask your doctor first, because its amino acids may let pressure fall further.
The label asks anyone with a known medical condition to consult a physician. It lists a 500 mg blend of L-citrulline DL-malate and two forms of L-arginine, and no trial has tested the capsule.
If your pressure already runs low, or you often feel faint, the kind answer is to wait for medical advice. See Melonex side effects. Prices are as listed in the seller's materials; confirm at checkout.
Prices as listed on the seller’s order page, October 19, 2026; confirm at checkout. The 2-bottle kit is $158 plus $9.99 shipping. Check your medicines with your doctor first. 60-day money-back guarantee (seller’s terms).
Melonex is a dietary supplement, not a treatment. Ask your doctor or pharmacist first if you take a nitrate for chest pain, an erectile-dysfunction drug such as sildenafil, any blood pressure medicine, a potassium-sparing diuretic, a blood thinner or a diabetes medicine, or if you have had a heart attack. Arginine and citrulline can push blood pressure down further. Keep taking prescribed medicine. See side effects and interactions.
No. 06FAQ
Melonex questions people ask
Is 90/60 always a problem?
No. MedlinePlus counts 90/60 or lower as low, but says it is a problem when it causes dizziness, fainting or shock (MedlinePlus, Low blood pressure). If you feel fine, mention the number at your next visit.
Why do I feel dizzy when I stand up?
Standing up too quickly is a common trigger, says MedlinePlus (MedlinePlus, Low blood pressure). Rise slowly and sit back down if the room spins. If it keeps happening, tell your doctor.
Can dehydration cause low blood pressure?
It can in some people, which is why steady water through the day is a common suggestion. A doctor should check repeated dizziness, since other causes can look similar.
No. 07Who wrote this
Written and reviewed by
Pages built from the bottle label, the seller’s order page and linked NIH, FDA, CDC, AHA, FTC and peer-reviewed sources.
Last updated . Learn about our editorial standards and how we check reviews. This website is run by Melonexcare, which describes itself as an authorized American Melonex outlet. It is not the manufacturer or the label’s distributor. Buying through our order links earns us money.
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