Blog
Prostadine and Diabetes Medicines: Bladderwrack Risks
Memorial Sloan Kettering notes that bladderwrack may lower blood sugar and may affect clotting, so men on diabetes medicines should ask a doctor or pharmacist before taking a product that lists it. Prostadine lists bladderwrack among nine ingredients with no printed amounts, so the effect on any person cannot be estimated.
Written by the Prostadine label deskUpdated · 4 min read

The basics01
Why this combination needs care
Diabetes medicines are dosed to a target. Anything that moves blood sugar the same way can push a person lower than planned, and anything that moves it the other way can undo the dose. A herb with a possible effect on blood sugar is therefore a matter for the person managing the medicine.
Memorial Sloan Kettering lists blood sugar effects and bleeding among the points to know about bladderwrack and says evidence for its claimed uses is limited (MSK, Bladder wrack).
The evidence02
What is on the label and what is unknown
| Item | Status |
|---|---|
| Bladderwrack listed | Yes, one of nine ingredients |
| Amount of bladderwrack | Not printed in any image we hold |
| Effect on a given person | Cannot be estimated |
| Other seaweeds and iodine | Also listed; add iodine from several sources (NIH ODS, Iodine) |
| Doctor named on the label | None |
The numbers03
Who should ask first
- Men taking insulin or tablets for blood sugar.
- Men with diabetes who also have thyroid disease.
- Men on blood thinners, since bladderwrack may affect clotting (MSK, Bladder wrack).
- Men planning surgery.
- Anyone who has had low blood sugar episodes.
Nobody is being told not to take anything. They are being told to ask a person who can see their records.
The catch04
What to watch for if you do try it
Watch for signs of low blood sugar: sweating, shakiness, hunger, confusion or a fast heartbeat. Check your levels as your doctor advises and more often at the start. Report any change to your clinician. If you use a meter or a continuous monitor, note the readings in your log.
Keep the dose consistent. Starting and stopping a product repeatedly makes the pattern harder to interpret.
Safety05
The iodine side
Four of the nine ingredients are seaweeds and a fifth is iodine, so the product can add iodine from several directions. The NIH sets the adult upper limit at 1,100 micrograms a day (NIH ODS, Iodine), and the American Thyroid Association advises against iodine supplements above 500 micrograms (ATA, Excess iodine). Diabetes and thyroid disease often occur together, so both checks apply. See our iodine and thyroid page.
Thyroid changes can alter blood sugar control and heart rate, which makes the picture harder to read.
What to do06
Illness days and changes in eating
Blood sugar is harder to manage on days of illness, travel or changed eating, and the added question of a supplement makes it harder still. On such days, many clinicians advise keeping things simple and avoiding anything new. If you are unwell, vomiting or not eating, ask your care team whether to pause the product and how to adjust your usual medicines.
The same applies to fasting before a test or a procedure. Tell the team about the product so they can decide whether to stop it in advance.
A short written plan, agreed with your doctor, takes the guesswork out of those days. It might say what to check, when to call and what to do with the supplement. That plan is worth more than any single piece of general advice, including this one.
On the label07
What to ask
Bring the bottle or a photo of the label and say that the amounts are not printed. Ask the pharmacist whether any ingredient is a concern for your medicines, whether you should check blood sugar more often and whether to avoid it altogether. A good answer may be to wait until a Supplement Facts panel is available.
You can also ask your doctor whether an alternative, such as a prescription for urinary symptoms, fits better.
In practice08
When to stop
Stop and seek care if you have repeated low readings, fainting, palpitations, severe stomach pain or any allergic sign. Tell the doctor the name of the product and the date you started, and bring the bottle. See when to stop Prostadine for the wider list.
FAQ09
Prostadine questions people ask
Can bladderwrack affect blood sugar?
Memorial Sloan Kettering says it may lower blood sugar, so men on diabetes medicines should ask first.
Is Prostadine safe with diabetes?
We cannot say. The bladderwrack amount is not printed, so ask a doctor or pharmacist who knows your medicines.
Do I need to check my blood sugar more?
Ask your clinician. More frequent checks at the start are a common sensible step.
What if I get low readings?
Treat as advised, stop the product and contact your doctor.
Who wrote this10
Written and reviewed by
Pages built from the bottle photos, the info page and linked NIH, FDA, NCI, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by a licensed U.S. retail desk for Prostadine, not by the manufacturer. We earn money when you buy through our order links.
Keep reading
More about Prostadine
Licensed U.S. retail desk — Prostadine
Ready to try Prostadine?
Check your medicines first, then pick a pack. Three or six bottles ship free in the US and cost less per bottle, and every pack carries the 60-day money-back guarantee.
- Secure checkout
- 60-day money-back guarantee
- Ships from the U.S., free on 3 or 6



