4.6 stars
200+reviews·12,000+happy customers

AVIRON™ BowelRelief

Your colon is pulling too much water out of your stool. Aviron puts it back.

  • ✓Go every morning on your own. No capful in the coffee, no senna at night.
  • ✓Softens hardened stool from the inside by pulling water through the intestinal wall into it.
  • ✓Afternoon bloat comes down. Your jeans still button at 9pm.
  • ✓Same 2 capsules on day 100 as day 1. Osmosis doesn't wear off like a receptor drug.
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90 days
Our Money-Back Promise
Take it for 90 days from the day it arrives. If your constipation hasn't resolved, your bloating hasn't dropped and you're not going daily without a laxative, send the bottles back. Full refund. Nothing to mail back.
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Dr. Catherine Novak, DO. Integrative gastroenterology, 18 years
Dr. Catherine Novak, DO. Integrative gastroenterology, 18 years

"Every woman who walks into my office after 45 describes the same thing. Regular her whole life, then perimenopause hit and everything stopped. Her doctor said drink water. The water never reached her colon. It got absorbed in the small intestine. The real problem is downstream. Her colon slowed down, and a slow colon pulls out too much water. The stool dries out, hardens, and compacts. Fiber just adds bulk to a brick. MiraLAX sends water around it, not through it. Magnesium oxide is the only compound I have seen that pulls water back through the intestinal wall directly into the dried-out stool. It rehydrates from the inside. The mass softens. The muscles do the rest. I have explained this to over two thousand patients. The ones who listen stop calling."

Built To The 4 Criteria

400mg Magnesium Oxide

The Clinical Dose, The Right Form

Citrate and glycinate absorb into your blood and leave your gut. Oxide stays in your intestines and pulls water into dried-out stool. The research sits around 400mg elemental. Most drugstore bottles stop at 200mg.

Capsule, Not Tablet

Opens In A Slow Gut

Tablets are compressed under high pressure with binders, and in a gut that's already slow some never fully break down. A capsule opens and releases the mineral where it has to work.

One Ingredient, Third-Party Tested

Every Batch

One line on the supplement facts panel: Magnesium (as Magnesium Oxide), 400mg. No stearate, no silicon dioxide and no proprietary blend hiding the dose.

Why Nothing Else Has Worked

Four gastroenterologists, two normal colonoscopies and 31 things tried. Here's what none of them explained.

Why Nothing Else Has Worked

Four gastroenterologists, two normal colonoscopies and 31 things tried. Here's what none of them explained.

Your Colon Is Pulling Out Too Much Water

When things slow down, your colon spends longer with the same stool and strips out too much water. It dries, hardens and compacts layer by layer. The colonoscopy prep flushes all of it out, so the camera sees a healthy, empty colon.

Laxatives Work Around The Problem

MiraLAX pulls water that slips around the hard mass, so one capful becomes two. Senna forces weakened muscle to squeeze against stool it cannot move. Fiber adds more bulk to a dehydrated pipe.

Aviron Puts The Water Back

Magnesium oxide stays in your gut and pulls water through the intestinal wall into the dried-out stool. It softens it from the inside, and your muscles move it gently on their own.

Same Dose On Day 100

Osmosis is chemistry, not a receptor, so your body has nothing to adapt to. No escalation from one capful to two, and no dependency.

Aviron magnesium oxide bottle

How To Use

Two capsules a night. Eight weeks to judge it.

Two Capsules At Bedtime

That is the full 400mg dose. No stacking, no doubling up at 11pm.

With A Full Glass Of Water

Aviron works by moving water into the stool. Give it water to move.

Keep It On Your Nightstand

Same glass, same spot, same time every night. Nothing to hide in the back of a drawer.

Give It 8 Full Weeks

A colon that has been drying out for years needs time to rehydrate. Judge it at week 8, not day 6.

What's Actually In The Bottle

What's Actually In The Bottle

0mg

Elemental Magnesium

Elemental magnesium as oxide. Twice the 200mg drugstore tablet.

0

Capsules At Bedtime

One serving at bedtime. No capfuls to measure, no pills to count.

0

Day Guarantee

Not going daily without a laxative? Send the bottles back, even the empty ones.

Why ChooseAviron?

Laxatives move water and muscle around hardened stool. Aviron gets water back into it. Here's the difference.

Why ChooseAviron?

Laxatives move water and muscle around hardened stool. Aviron gets water back into it. Here's the difference.

Aviron
Magnesium Oxide 400mg
Laxatives
MiraLAX, Senna, Dulcolax
Where the water goes
Into the stool Around it
Same dose works on day 100
No forced contractions or 3am cramping
One ingredient, third-party tested
Nightly dose
2 capsules Keeps climbing

Money-Back Guarantee

Take Aviron for 90 days. If your constipation hasn't resolved, your bloating hasn't dropped and you're not going daily without a laxative, send the bottles back. Even the empty ones. Every penny back.

TRY IT RISK-FREE
100% Satisfaction
Third-Party Tested
Even Empty Bottles

Money-Back Guarantee

Take Aviron for 90 days. If your constipation hasn't resolved, your bloating hasn't dropped and you're not going daily without a laxative, send the bottles back. Even the empty ones. Every penny back.

TRY IT RISK-FREE
100% Satisfaction
Third-Party Tested
Even Empty Bottles

Questions You've Probably Already Asked

You've been given a lot of confident answers that didn't work. Here are ours.

My colonoscopy was normal. Why am I still not going? +

A colonoscopy checks structure: polyps, inflammation, lesions. You should keep getting them. But the prep flushes everything out first, so the camera looks at an empty colon. It can't see a colon that pulls too much water out of the stool every day.

I've tried magnesium before. Why would this be different? +

Most magnesium sold for constipation is citrate or glycinate. Both absorb into your bloodstream and leave your gut, which is why they help sleep and do nothing for constipation. Magnesium oxide barely absorbs. It stays in the colon, where the stool is drying out.

Why doesn't MiraLAX fix it? +

MiraLAX pulls water into the colon, but that water takes the path of least resistance and goes around hardened stool. You get thin, watery movements past the mass while the core keeps compacting, and your body adapts until one capful becomes two.

I was told I have IBS-C or a redundant colon. Is this for me? +

If you've been given a label and a laxative but nobody explained why your stool hardens, yes. Aviron targets the water problem underneath, whatever the label on your chart says.

Why not buy magnesium oxide at the drugstore? +

The $8 bottle on the bottom shelf is usually 200mg compressed tablets with fillers. You'd need 4 to reach 400mg, and compressed tablets don't always break down in a slow gut. Aviron is 400mg elemental in 2 capsules with nothing else on the label.

Can I stop my laxatives right away? +

Step down gradually as your body starts going on its own. In Tara's case notes, Claire dropped her senna in week 4 and her MiraLAX in week 7. If a doctor prescribed your current regimen, talk to them before changing it.

Will my body get used to it? +

No. Aviron works by osmosis, which is chemistry, not a receptor your body can downregulate. The same 2 capsules work on day 1 and day 100.

What if it doesn't work for me? +

You're covered by the 90-day money-back guarantee. Send the bottles back, even the empty ones, and every penny comes back.