Safety
Prostadine Side Effects: What to Know Before You Start
No side effects have been reported for Prostadine itself, but some ingredients carry notes.
Iodine can affect the thyroid, saw palmetto may add to bleeding and pomegranate can loosen stools. If you take thyroid, blood-thinning or heart drugs, ask your doctor first.
Written by the Prostadine label deskUpdated
The frame01
What “no known side effects” does and does not mean
We found no report of side effects for Prostadine, and also no safety study of it. Those two facts are not the same as “safe”.
A product with no trial has no systematic record of problems. The FDA does not review supplements for safety before they are sold, and it says people should talk to a doctor or pharmacist before buying one (FDA, Using Dietary Supplements). You are most likely to have side effects at high doses, and some supplements interact with medicines (NIH ODS, Supplements: What to Know).
So the safe way to think about Prostadine is by ingredient. Nine lines each have their own notes, and the formula adds them together. Where research is thin, we say so rather than imply the absence of evidence is evidence of absence.
By ingredient02
Possible effects, one line at a time
The table lists what published sources say for each ingredient. It describes the ingredient, not the Prostadine bottle, whose amounts are unknown.
| Ingredient | Possible effects | Interactions to ask about | Source |
|---|---|---|---|
| Nori, wakame | Iodine adds to the daily total; amounts vary widely | Antithyroid drugs; potassium iodide with ACE inhibitors or potassium-sparing diuretics | (NIH ODS, Iodine) |
| Kelp | Some kelp supplements hold thousands of times the upper limit of iodine | Thyroid medicines | (ATA, Excess iodine) |
| Bladderwrack | Iodine-rich; arsenic, cadmium and mercury possible from polluted water; a case report of bladder bleeding in a multi-herb product | Thyroid medicines | (MSK, Bladder wrack) |
| Saw palmetto | Stomach upset, diarrhea, fatigue, headache, dizziness, decreased libido; case reports of bleeding, liver damage and pancreatitis | Anticoagulants, antiplatelets, anti-inflammatory pain relievers | (NCCIH, Saw Palmetto) (MSK, Saw Palmetto) |
| Pomegranate | Diarrhea at higher doses | Warfarin (case report); statins (juice, muscle risk) | (MSK, Pomegranate) |
| Iodine | Goiter, underactive or overactive thyroid, thyroiditis at high intakes | Antithyroid drugs; ACE inhibitors; potassium-sparing diuretics | (NIH ODS, Iodine) |
| Shilajit | Safety data limited to one small trial; product quality varies | None established | (Pandit et al., Andrologia 2016) |
| Neem | Swallowed oil: seizures, coma, deaths; rare reports of vomiting, drowsiness, vision loss | Liver enzymes in lab tests; relevance unknown | (MSK, Neem) |
The big one03
Iodine and the thyroid come first
If you read only one section, read this. Five of nine lines can add iodine, and the total is unknown. Adults need 150 micrograms a day, and the tolerable upper level is 1,100 (NIH ODS, Iodine). The American Thyroid Association advises against iodine or kelp supplements above 500 micrograms and notes that older adults, pregnant and breastfeeding women and people with thyroid disease are more vulnerable (ATA, Excess iodine).
Warning signs of too much or too little thyroid hormone include a fast or irregular heartbeat, feeling hot or cold, weight change, a swollen neck or unusual tiredness. These are non-specific, which is why a blood test, not a guess, settles it. Our iodine and thyroid page explains the tests and the question list.
If you have ever been told you have a thyroid problem, ask your doctor before the first dose. If you have not, mention the supplement at your next routine visit.
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Interactions worth a conversation with a pharmacist
Interaction notes rest on case reports and lab work in several rows, so they are reasons to ask, not reasons for alarm.
- Blood thinners and aspirin. Saw palmetto may increase bruising and bleeding; pomegranate has a warfarin case report (MSK, Saw Palmetto) (MSK, Pomegranate).
- Thyroid medicines. Added iodine can alter how thyroid treatment works (NIH ODS, Iodine).
- Heart and blood pressure medicines. Potassium iodide with ACE inhibitors or potassium-sparing diuretics can raise potassium (NIH ODS, Iodine).
- Prostate medicines. There is no known interaction listed, but tell your doctor you use the drops. Finasteride and dutasteride lower PSA, so any PSA result needs context (NCI, PSA test).
- Surgery. Saw palmetto has been linked to bleeding during surgery in case reports, so tell the surgical team (MSK, Saw Palmetto).
Never stop or change a prescription because of a supplement. If an interaction concerns you, ask the prescriber, who knows your whole history.
When to stop05
Stop and seek care if you notice any of these
Get care right awayNIDDK lists these four as reasons not to wait (NIDDK, Enlarged Prostate (BPH)) (NIDDK, Prostatitis).
- Cannot urinate at allA bladder that will not empty is an emergency, not a symptom to try a supplement on.
- Blood in the urineAny visible blood needs a doctor, whatever the cause turns out to be.
- Painful, urgent urination with fever and chillsThis pattern can mean an infection of the urinary tract or prostate, which needs prompt treatment.
- Significant lower belly or urinary painStrong pain in the lower abdomen or when urinating should be looked at the same day.
Seek emergency care for any of these. No supplement, including this one, is a substitute.
Beyond those four, stop the drops and tell a clinician about a racing heartbeat, a swollen neck, unusual bleeding or bruising, vomiting, marked drowsiness, a rash or facial swelling. Report any reaction to the seller too, using the phone number on the contact page.
Prostadine is a dietary supplement, not a treatment. Ask your doctor or pharmacist first if you take a prostate medicine (an alpha blocker such as tamsulosin, or finasteride or dutasteride), a blood thinner, a thyroid medicine, an ACE inhibitor or a potassium-sparing diuretic, or any other prescription. Seaweeds and iodine add iodine; saw palmetto may add to bleeding risk. Keep taking prescribed medicine. See side effects and interactions.
- Saw Palmetto. Memorial Sloan Kettering Cancer Center, Integrative Medicine, 2023.Reports conflicting data on BPH symptoms (some trials improved, others showed no effect). Did not affect serum PSA more than placebo, even at high doses. Common side effects are stomach upset, diarrhea, fatigue, headache, decreased libido and rhinitis. Case reports include bleeding problems (including with rivaroxaban and during surgery), liver damage and pancreatitis. May increase bruising and bleeding risk with anticoagulants, antiplatelets and NSAIDs.
- Iodine: Fact Sheet for Health Professionals. NIH Office of Dietary Supplements, 2024.RDA for adults is 150 mcg a day; the tolerable upper intake level is 1,100 mcg a day. Dried nori, 2 tablespoons of flakes (5 g): 116 mcg. Seaweeds range from 16 to 2,984 mcg per gram. High intakes can cause goiter, elevated TSH and hypothyroidism, and iodine-induced hyperthyroidism and thyroiditis. Interactions: antithyroid drugs (additive effect, hypothyroidism), and potassium iodide with ACE inhibitors or potassium-sparing diuretics (hyperkalemia risk).
- ATA Statement on the Potential Risks of Excess Iodine Ingestion and Exposure. American Thyroid Association, 2024.Iodine is needed for normal thyroid function (150 mcg a day for adults). Intake above 1,100 mcg a day is not recommended. Many iodine, potassium iodide and kelp supplements contain amounts far above the upper limit, by up to several thousand times. The ATA advises against taking iodine or kelp supplements that provide more than 500 mcg of iodine a day. Older adults, pregnant and breastfeeding women, infants and people with existing thyroid disease are more vulnerable.
- Neem. Memorial Sloan Kettering Cancer Center, Integrative Medicine, 2023.'Neem has been used in traditional and Ayurvedic medicine, but studies on safety and effectiveness are lacking.' Swallowing neem oil has caused severe poisoning in children and adults, with seizures, coma and some deaths. Rare oral case reports: vomiting, drowsiness, diarrhea, vision loss, nervous system toxicity. In vitro, neem extract inhibited CYP3A4/5, CYP2C8 and CYP2C9; clinical relevance unknown.
FAQ06
Prostadine questions people ask
What are the side effects of Prostadine?
No side effects are documented for the product, and no safety study of it exists. Ingredient notes include stomach upset or bleeding concerns with saw palmetto, diarrhea with pomegranate and thyroid effects from excess iodine.
Can Prostadine affect the thyroid?
It can in principle, because four seaweeds and iodine itself are listed and no total is printed. Excess iodine can cause underactive or overactive thyroid (NIH ODS, Iodine). Ask your doctor first if you have thyroid disease.
Is Prostadine safe to take every day?
Evidence is lacking for this exact product. Daily use of its ingredients is tolerated by many people, but iodine and the bleeding notes on saw palmetto make a doctor's view worthwhile for some.
Does Prostadine interact with medication?
Possibly. Ask a pharmacist if you take thyroid medicine, blood thinners, aspirin, ACE inhibitors or potassium-sparing diuretics. Do not stop prescribed medicine on your own.
Who wrote this07
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.
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