Zen Haus 12.5 mg Iodine with Selenium – Dual-Form Iodine Tablets
Two forms of iodine and the nutrients that help it work, in one caplet.
- 12.5 mg dual-form iodine
- Selenium as selenomethionine
- 200 scored caplets (200 servings)
- Vegan, non-GMO, made in USA
Free US shipping.
Practitioner? Ask about bulk pricing at iodine@myzenhaus.com.
Zen Haus 12.5 mg Iodine with Selenium is an iodine supplement with selenium that combines two forms of iodine with their key cofactors in one caplet. Each of the 200 scored caplets (tablets) delivers 12.5 mg of iodine, about 25% molecular iodine and 75% iodide, with selenium, riboflavin (B2), L-tyrosine, L-theanine and chromium. The Zen Haus iodine supplement is built for whole-body iodine, and for anyone moving on from Lugol’s drops or comparing Iodoral.
What’s in each caplet
| Supplement Facts | Amount per caplet | % Daily Value |
|---|---|---|
| Iodine (as molecular iodine and potassium iodide) | 12.5 mg | 8333% |
| Selenium (as L-selenomethionine) | 40 mcg | 73% |
| Chromium (as chromium picolinate) | 15 mcg | 43% |
| Riboflavin (vitamin B2) | 1.3 mg | 100% |
| L-Tyrosine | 30 mg | † |
| L-Theanine | 20 mg | † |
† Daily Value not established.
12.5 mg iodine per caplet (as molecular iodine and potassium iodide), about 25% molecular iodine and 75% iodide.
Format: 200 scored, film-coated caplets (8 × 4 mm); 1 caplet = 1 serving; splits into ~6.25 mg halves. 100cc HDPE supplement bottle, about 3 oz full, 3-year expiry.
Other ingredients: calcium carbonate, microcrystalline cellulose, stearic acid, croscarmellose sodium, vegetable magnesium stearate, silicon dioxide.
Why these ingredients work together
Iodine. Supports thyroid, adrenal, metabolism, breast, ovary and prostate function. Low iodine shows up as low energy, dry skin, tingling or numbness, weight gain, forgetfulness, mood swings, low mood, and long, heavy periods. Read how iodine works in the whole body.
Dual form. The thyroid takes up iodide, while breast, stomach and prostate tissue are argued to use molecular iodine. Each caplet carries both, with more molecular iodine than the seaweed-rich Japanese diet and far less than Lugol’s. See iodine vs iodide.
Selenium (as selenomethionine). Helps the body recycle iodine and supports the conversion of T4, the storage form of thyroid hormone, into active T3. It also supports glutathione, which protects cells, builds the immune system and supports the heart. Read Glutathione!
Riboflavin (B2). Supports the NADH and flavoprotein pathway, part of the cell’s energy machinery, which feeds iodine use in the thyroid.
L-Tyrosine. The amino acid that joins with iodine to make thyroid hormone.
Chromium picolinate. Supports normal metabolism and storage of fats, proteins and carbohydrates.
L-Theanine. Relaxation without drowsiness. It smooths out iodine’s stimulating effect and offers upper-respiratory and neuroprotective (nerve-protecting) support.
How to take this iodine supplement with selenium
Take it before 2 pm. Iodine is energizing, and while L-theanine smooths that out, a late dose can still disturb sleep. Go low and slow: start with a half or a quarter caplet using the score line (each half is about 6.25 mg) and increase gradually. There is no fixed schedule. Your body sets the pace.
- Detox. Iodine and selenium push bromide, fluoride and other halides out of the body. Hold the dose if detox symptoms appear.
- Replenishment. Once symptoms settle, increase gradually as your stores fill.
- Maintenance. One caplet, 12.5 mg, each day.
Read more on how much iodine to take and iodine detox symptoms.
How Zen Haus compares
| Zen Haus | Optimox Iodoral 12.5 | Designs for Health Iodine Synergy | Lugol’s 2%/5% liquid | |
|---|---|---|---|---|
| Iodine per unit | 12.5 mg | 12.5 mg (5 mg molecular iodine + 7.5 mg potassium iodide) | 10 mg (as potassium iodide) | Varies by strength and drop |
| Form(s) | Molecular iodine + potassium iodide | Molecular iodine + potassium iodide | Potassium iodide only | Molecular iodine + potassium iodide |
| Selenium | 40 mcg (selenomethionine) | None | 40 mcg (selenomethionine) | None |
| Other cofactors | B2, L-tyrosine, L-theanine, chromium | None | None | None |
| Count | 200 | 90 or 180 | 120 | By the drop |
| Format | Scored, film-coated caplet | Tablet | Capsule | Liquid |
Optimox Iodoral is the original tablet of the iodine protocol. Zen Haus completes it with the cofactors the protocol calls for: selenium, B2 and tyrosine, in 200 caplets. Designs for Health Iodine Synergy is potassium iodide only. Zen Haus delivers both forms of iodine, the same 40 mcg of selenium, plus B2, tyrosine and theanine. And unlike Lugol’s drops, every caplet is a precise 12.5 mg dose with no taste and no stains. Read more on Lugol’s vs tablets.
Why Zen Haus made it
Iodine works best alongside the nutrients that support it. That’s why we combined them in a single caplet, so there’s no need for separate bottles.
Each caplet carries molecular iodine and potassium iodide, so every tissue that uses iodine gets the form it favors, with selenium, B2, L-tyrosine, L-theanine and chromium working alongside. The ratio takes its cue from seaweed and the traditional Japanese diet, where iodine arrives in more than one form and in amounts far above the RDA.
The research behind it: Iodine and Iodides in Seaweeds and Supplements (Japanese diet) and Lugol’s Iodine: Not Created for Supplementation.
For practitioners
The formula follows the iodine protocol: both forms of iodine with selenium, B2 and tyrosine in one caplet, plus L-theanine and chromium, with every amount listed above. Bulk and volume pricing is available at iodine@myzenhaus.com, with expedited shipping on 2 or more units.
Reviews
Rated 4.6 out of 5 from 816 ratings on Amazon (as of October 10, 2026). Read the reviews on Amazon.
Frequently asked questions
Why does this iodine supplement include selenium?
Selenium powers the enzymes that convert T4 into active T3, and glutathione peroxidase, which protects the thyroid from hydrogen peroxide while it makes hormone. It also helps the body recycle iodine. Taking iodine without enough selenium is the most common protocol mistake.
Is 12.5 mg of iodine too much?
12.5 mg is 12,500 mcg. The RDA of 150 mcg was set as a minimum to prevent deficiency, not for whole-body sufficiency. Japanese iodine intake from seaweed averages about 12 to 14 mg a day, and 12.5 mg is the protocol’s standard maintenance dose. If you’re new to iodine, start low and go slow.
What are iodine detox symptoms?
As iodine pushes bromide and fluoride out of the body, you may notice acne, headache, vivid dreams, mood swings or a metallic taste for a while. These pass. Hold the dose, drink water with a pinch of Himalayan or Celtic salt, and keep moving.
Can I take it with my other supplements?
Yes, it pairs with most daily supplements. Each caplet already contains selenium, B2, L-tyrosine and L-theanine, so check other products for overlap, especially extra selenium. Magnesium and vitamin C are strong companion nutrients to keep in your daily routine.
Is it vegan, non-GMO and made in the USA? How long does a bottle last?
Yes on all three, as the label shows. Each 100cc HDPE bottle holds 200 scored caplets with a 3-year expiry. One caplet is one serving, so a bottle lasts 200 days, more than six months, at one caplet a day.
