Rohto Zi b
An awakening cool sensation that fully refreshes tired eyes
For People Like This · At Times Like These
Product Overview
“Rohto Zi b” is an eye drop that refreshes tired eyes with an awakening cool sensation. It contains ingredients that help activate eye function and promote metabolism, along with a redness reliever. With zinc sulfate hydrate, it also helps support calming of inflammation caused by ultraviolet light and similar factors.
Ideal when you want to refresh tired eyes after sports, long drives, and more. Features a well-balanced formula that can address various eye troubles, plus a crisp, refreshing cool sensation. Equipped with a “free-angle nozzle” that allows instillation from any angle. The liquid is colorless and transparent, and refrigerator storage is also possible.
Product Features
Crisp & Refreshing · Cooling Sensation Level 8
Cooling Sensation Level 8Refreshes tired eyes with an awakening cool sensation. A formula with l-menthol, d-camphor, and peppermint oil delivers a crisp, refreshing feel in use.
Supports Redness & Inflammation
Tetrahydrozoline Hydrochloride / Zinc Sulfate HydrateContains the redness-relieving ingredient “tetrahydrozoline hydrochloride” and the astringent/anti-inflammatory ingredient “zinc sulfate hydrate.” Also helps support eye inflammation caused by ultraviolet light and similar factors (such as snow blindness).
Supports Eye Activation & Metabolism
Vitamin B6 / Potassium L-AspartateContains the vitamin-supplying ingredient “vitamin B6” and the amino acid ingredient “potassium L-aspartate,” which helps promote eye metabolism. Supports the function of tired eyes.
Well-Balanced 6-Ingredient Formula
6 Active IngredientsA well-balanced formula designed to address various eye troubles such as fatigue, redness, itchiness, blur, and inflammation. Refrigerator storage is also possible, so you can enjoy an even cooler, more refreshing feel in use.
Active Ingredients
| Ingredient | Amount | Action |
|---|---|---|
| Tetrahydrozoline hydrochloride | 0.05% | Redness-relieving ingredient |
| Neostigmine methylsulfate | 0.003% | Improves focusing muscle fatigue |
| Zinc sulfate hydrate | 0.05% | Astringent / anti-inflammatory |
| Chlorpheniramine maleate | 0.03% | Antihistamine (itch suppression) |
| Vitamin B6 | 0.1% | Vitamin-supplying ingredient |
| Potassium L-aspartate | 1% | Metabolism promotion (amino acid) |
※Inactive ingredients: boric acid, borax, l-menthol, d-camphor, peppermint oil, sodium edetate, polyoxyethylene hydrogenated castor oil, hypromellose, chlorobutanol, pH adjuster
Indications / Effects
Dosage and Administration
| Subject | Dose per use | Times per day |
|---|---|---|
| Ages 15 and over (no restrictions) | 2–3 drops | 5–6 times |
Rohto Zi Series Comparison Chart
| Comparison Item | 【Rohto Zi b】 | Rohto Zi Contact b | Rohto Zi Pro d |
|---|---|---|---|
| JAN | 4987241150175 | 4987241165117 | 4987241165100 |
| Drug Classification | Class 2 OTC Drug | Class 3 OTC Drug | Class 2 OTC Drug |
| Cooling Sensation Level | 8 | 8+ | 8+ (brand’s highest) |
| Main Target | Tired eyes, redness, balanced support | Dryness and fatigue while wearing contacts | Specialized for focusing fatigue and blur |
| Contact Lens Compatibility | Hard only | Soft and hard compatible | Hard only |
| Neostigmine (focusing fatigue improvement) | 0.003% | None | 0.005% (maximum concentration) |
| Potassium L-aspartate (metabolism promotion) | 1% (contained) | None | None |
| Redness-relieving ingredient | Tetrahydrozoline hydrochloride 0.05% | None | Tetrahydrozoline hydrochloride 0.05% |
| Antihistamine (itch suppression) | Chlorpheniramine maleate 0.03% | None | Chlorpheniramine maleate 0.03% |
| Zinc sulfate (astringent / inflammation calming) | 0.05% | None | 0.1% |
| Chondroitin (corneal protection) | None | None | 0.5% (maximum concentration) |
| Allantoin (tissue repair) | None | None | 0.2% |
| Moisture-retaining ingredient | None | Hypromellose 0.21% | Chondroitin 0.5% |
| W Minerals (moist feel) | None | Contains potassium chloride and sodium chloride | None |
| Refrigerator storage | ✔ Possible | Not stated | Not stated |
| Free-angle nozzle | ✔ | ✔ | ✔ |
| Self-Medication Tax System | Eligible | Not applicable | Eligible |
🌱 Brand Story
Rohto Pharmaceutical is a leading Japanese healthcare company headquartered in Osaka. The “Rohto Zi” series was created to meet diverse eye needs in modern life—sports, driving, and digital work. Rohto Zi b adopts a well-balanced formula that can broadly address various eye troubles such as redness, fatigue, itchiness, and blur, and is the series’ standard model widely supported by everyone from sports enthusiasts to everyday users.
- The following people should consult a physician, pharmacist, or registered seller before use: those under a physician’s care; those who have experienced allergic symptoms due to medicines or similar; those with severe eye pain; those diagnosed with glaucoma.
- If symptoms such as skin rash, redness, or itchiness, or eye redness, itchiness, swelling, or stinging pain appear after use, stop use immediately and consult a physician, pharmacist, or registered seller.
- If blurred vision does not improve, or if symptoms do not improve after 5–6 days of use, stop use and consult a physician, pharmacist, or registered seller.
- Do not use while wearing soft contact lenses (use while wearing hard contact lenses is acceptable).
- If storing in the refrigerator, take care not to freeze the solution. If the solution freezes, do not use it.
- Before use, it is recommended that you consult a physician, pharmacist, or registered seller.
- Store away from direct sunlight, high temperature, and high humidity (refrigerator storage is also acceptable).
- Store out of reach of children.
- Use as soon as possible after opening.
- Do not transfer to another container.
- This product is not classified as dangerous goods for air transport under the Civil Aeronautics Act.