Skip to content
  • ☰ Category
  • New product
  • Set product
  • Brand List
  • Blog
  • FAQ
  • Holiday Notice
MamiGo
Popular searches
Pharmaceuticals and Quasi-drugs Health Foods Food Sweets Beverages Daily necessities Beauty Catalog Featured Brand Blog Business Days Information Frequently Asked Questions FAQ What is MamiGo? Contact Us

Your cart is empty

Continue shopping
0Cart(¥0 JPY)
  • ☰ Category
    • Santen Pharmaceutical Sante Hyalein S 5ml x 2 bottles OTC Medicines and Quasi-drugs
    • 日本生物化学 キトサン 菊 350錠 Health Foods
    • ORIHIRO Purunto Konjac Jelly Pouch Apple + Grape 12 pieces Food
    • Sweets
    • Beverages
    • 日用品 Daily necessities
    • 美容 Beauty
    • 비염
      Rhinitis
    • 위장약
      Gastrointestinal Medicine
    • 정장 / 변비약
      Intestinal Regulators & Laxatives
    • 피부외용약
      Topical skin medicine
    • 진통소염제
      Pain Relief and Anti-inflammatory Medicine
    • 目薬
      Eye Drops
    • 영양보급
      Nutritional Supplementation
    • 특수의약품
      Special OTC Medicines
    • 生活習慣病
      Lifestyle-related diseases
    • 医療用品
      Medical Supplies
    • 감기약
      Cold Medicine
    • エスエス製薬 エスエス ブロン錠 60錠
      Cough and Throat Medicine
    • 해열 진통제
      Antipyretic Analgesics
    • 건강관리식품
      Health Care Foods
    • 美容・ダイエットケア食品
      Beauty and Diet Care Foods
    • バランス栄養食品
      Balanced Nutritional Food
    • 特定保健用食品
      Specified Health Food Products
    • 栄養機能食品
      Nutritional Functional Foods
    • 日本生物化学 キトサン 菊 350錠
      Functional Food with Health Claims
    • 조미료
      seasoning
    • 香辛料
      Spices
    • カレー・シチュー
      Curry / Stew
    • 간단 요리
      Easy Cooking
    • スープ
      Soup
    • 면류
      Noodles
    • 곡물류
      Grains
    • 분말류
      Powdered Products
    • 乾物類
      Dried Foods
    • 잼 / 스프레드
      Jam / Spread
    • 디저트
      Dessert
    • チョコレート
      Chocolate
    • ビスケット
      Biscuit
    • クッキー
      Cookie
    • スナック菓子
      Snack Confectionery
    • ケーキ
      Cake
    • パイ
      Pie
    • 和菓子
      Japanese Sweets
    • 米菓子
      Rice Snacks
    • 豆菓子
      Bean Snacks
    • こども菓子
      Children's Sweets
    • 飴
      Candy
    • グミ
      Gummy
    • 珍味
      Delicacies
    • 水
      Water
    • ソフトドリンク
      Soft drink
    • ノンアルコール
      Non-alcoholic
    • コーヒー
      Coffee
    • ラテ
      Latte
    • ココア
      Cocoa
    • 日本茶
      Japanese Tea
    • 紅茶
      black tea
    • 中国茶
      Chinese Tea
    • 健康茶
      Health Tea
    • 青汁
      Green Juice
    • その他の飲料
      Other Beverages
    • 家庭用医療用品
      Home Medical Supplies
    • 衛生用品
      Hygiene Products
    • 生活環境用品
      Living Environment Supplies
    • 洗剤
      Detergent
    • Kitchen Supplies
    • Cleaning Supplies
    • ベビー・マタニティ用品
      Baby & Maternity Products
    • 化粧品
      Cosmetics
    • バス用品
      Bath Products
    • ボディケア用品
      Body Care Products
    • ヘアケア用品
      Hair Care Products
    • オーラルケア用品
      Oral care products
    • エチケット用品
      Etiquette Supplies
  • New productNew
  • Set product
  • Brand List
  • Blog
  • FAQ
  • Holiday Notice
Home Smile The Medical A DX
LION スマイル ザ メディカル A DX 15ml
LION スマイル DX シリーズ
LION スマイル ザ メディカル A DX 15ml
LION スマイル DX シリーズ
LionSKU: 4903301311768

Smile The Medical A DX

¥1,500 JPY /
Shipping calculated at checkout.
Class 3 OTC drugs

Product name : Smile The Medical A DX
selection 15ml
LION スマイル ザ メディカル A DX 15ml
Smile The Medical A DX
¥1,500 JPY /
selection 15ml
 
 
Class 3 OTC Drug Eye drops Preservative-free Cooling sensation level 0 (mild)

Smile The Medical A DX

Eye drops containing Vitamin A that repair fatigue caused by dryness and overuse from the cornea

✦ Contains maximum amount of Vitamin A ✦ Mild formula that doesn’t sting ✦ Preservative-free ✦ Supports corneal repair

For these people and situations

💧
For those concerned about dry eyes For those who want to care for eye fatigue and blurred vision caused by dryness. Mild formula that doesn’t sting, easy to use even for delicate eyes.
💻
For those who use PCs and smartphones for long hours Supports corneal care for those prone to eye fatigue and blurred vision caused by overuse of digital devices.
👁️
For those whose eyes sting easily Formulated without cooling agents with level 0 sensation, causing minimal irritation, making it easy to use for those whose eyes sting easily or have sensitive eyes.
🏊
For prevention of eye diseases and daily care Can also be used for prevention of eye diseases after swimming or when dust or sweat gets into the eyes.

Product Overview

Smile The Medical A DX is a product in the Smile DX series by Lion Corporation. It contains the maximum amount of corneal repair ingredient “Vitamin A (Retinyl palmitate)” within standards (50,000 units), penetrates damaged corneal cells to promote hyaluronic acid production, supporting corneal repair. It also promotes mucin production to stabilize tears, retain moisture, and help care for eye fatigue caused by dryness and overuse (Method Patent No. 5549669).

Mild formula with no cooling agents (level 0) that minimizes stinging sensation, making it easy to use even for sensitive eyes. Contains no preservatives (such as benzalkonium chloride) and uses Lion’s unique technology to ensure preservative effects. Please consult a doctor, pharmacist, or registered seller if you have any questions.

Product Features

01

Repairs cornea with maximum amount of Vitamin A

Retinyl palmitate 50,000 units

Contains the maximum amount of Vitamin A within standards. Penetrates damaged corneal cells to promote hyaluronic acid production and supports corneal repair (Method Patent No. 5549669).

02

Retains tears and keeps moisture

Mucin production promotion

Promotes production of mucin, which stabilizes tears, retains moisture on the eyes, and continuously cares for eye fatigue caused by dryness and overuse from the cornea.

03

No cooling agents added; mild formula that doesn’t sting

Cooling sensation level 0

Mild type with no cooling agents and a cooling sensation level of 0. Designed for those whose eyes sting easily, those with sensitive eyes, or those who dislike cooling sensations.

04

Preservative-free

Lion’s unique preservative effect technology

No preservatives such as benzalkonium chloride or potassium sorbate are added; Lion’s unique technology ensures preservative effects. Expiration date and storage methods are the same as for eye drops containing preservatives.

Active ingredients (per 100mL)

Ingredient name Content amount Classification of action
Retinyl palmitate (Vitamin A) 50,000 units Corneal repair
Chondroitin sulfate ester sodium 0.1g Corneal protection
Taurine 1g Metabolism promotion
Additives: Boric acid, Trometamol, Edetate sodium, BHT, Polyoxyethylene hardened castor oil, Polysorbate 80, Propylene glycol, Hypromellose, Povidone, pH adjuster

Efficacy and Effects

Eye fatigue Blurred vision (such as when there is a lot of eye discharge) Prevention of eye diseases (after swimming, when dust or sweat gets into the eyes, etc.) Discomfort when wearing hard Contact lenses

Usage and Dosage

Amount per application Number of times to apply per day
1 to 3 drops 3 to 6 times
・When used by children, use under the guidance and supervision of a guardian.
・Do not let the tip of the container touch your eyes, eyelids, or eyelashes (this can cause contamination or foreign matter intrusion). Do not use if the solution is cloudy.
・Do not use while wearing soft Contact lenses.
・Contains high-viscosity ingredients. Vision may temporarily appear blurry after use, so please be careful.
・For ophthalmic use only.

Smile DX Series Comparison

Comparison items 【Smile The
Medical A DX】
Smile 40
Premium DX
Smile 40
MediClear DX
Smile The Medical
A DX Contact
Classification Class 3 OTC Drug Class 2 OTC Drug Class 2 OTC Drug Class 3 OTC Drug
Main target symptoms Dryness, fatigue from overuse, blurriness Eye fatigue, blurriness, redness, itching Itching, redness, blurriness Dryness, fatigue from overuse, blurriness
Vitamin A content 50,000 units (maximum amount) 50,000 units (maximum amount) 10,000 units 50,000 units (maximum amount)
Number of active ingredients 3 types 10 types 7 types 4 types
Anti-inflammatory & redness relief ingredients None Epsilon-aminocaproic acid & tetrahydrozoline hydrochloride Berberine chloride hydrate & dipotassium glycyrrhizinate (herbal-derived W) None
Corneal protective ingredients Chondroitin sulfate ester sodium Chondroitin sulfate ester sodium None Chondroitin sulfate ester sodium
Cooling sensation Level 0 (Mild, non-stinging) Level 4 (Cool) Level 4 (Cool) Level 0 (Mild, non-stinging)
Use while wearing Contact lenses Hard lenses only Hard lenses only Hard lenses only Compatible with all Contact lenses (except colored CL)
Preservative Additive-free Additive-free Additive-free Additive-free
For these users For those whose main concerns are dryness and fatigue and are looking for eye drops that do not sting For those concerned about eye fatigue, blurriness, redness, and itching For those with particularly strong itching and redness For those who want to easily apply eye drops while wearing Contact lenses

🌱 Brand Story

Lion Corporation’s "Smile" is an ophthalmic medicine brand long loved in Japan. Lion established the "Corneal Research Institute" and has accumulated unique research on the cornea, the key to eye health. The DX series is based on the concept of "healing from the cornea," developing Lion’s unique vitamin A penetration formula (patent method No. 5549669) that enhances vitamin A absorption into the cornea. It is an ophthalmic medicine series packed with years of research, featuring a unique technology that provides high preservative effects without adding preservatives.

⚠️ Usage Precautions
  • Consult a doctor, pharmacist, or registered seller before use: If you are receiving medical treatment. If you have had allergic reactions to medicines. If you have severe eye pain. If you have been diagnosed with glaucoma.
  • If you experience rash, redness, itching, eye redness, itching, swelling, stinging, or pain after use, stop immediately and consult a doctor, pharmacist, or registered seller.
  • If eye blurriness does not improve, or if symptoms do not get better after about two weeks of use, stop using and consult a doctor, pharmacist, or registered seller.
  • Do not use while wearing soft Contact lenses.
  • Because it contains high-viscosity ingredients, your vision may temporarily appear blurry after use.
  • Do not let the tip of the container touch your eyes, eyelids, or eyelashes. Do not use if the solution is cloudy.
📦 Storage Precautions
  • Avoid direct sunlight and store in a cool place as much as possible.
  • Keep out of reach of children.
  • Do not transfer to other containers (this may cause misuse or change the quality).
  • Do not use products past their expiration date.
  • Please use as soon as possible after opening.

● Features
Heals fatigue caused by dryness and overuse from the cornea!
* Works on damaged corneal cells
* Corneal cells with mild abrasion
Smile's Vitamin A penetration formula
Contains the maximum amount of Vitamin A※1
Method Patent No. 5549669: Method for stabilizing Vitamin A
(1) Repairs the cornea: Produces "hyaluronic acid" to promote corneal repair.
(2) Retains tears: Produces "mucin" that stabilizes tears and retains them on the eye.
※1 Contains the maximum amount according to the standards for approval of general ophthalmic drugs: The approval standards refer to the range of pharmaceuticals established by the Ministry of Health, Labour and Welfare to streamline approval procedures.
Preservative-free
Does not contain preservatives (such as benzalkonium chloride, potassium sorbate).
Uses Smile's proprietary technology to provide preservative effects.
The expiration date and storage method can be used the same as eye drops containing preservatives.

【Class 3 OTC Drug】

●Efficacy/Effects
Eye fatigue, blurred vision (such as when there is a lot of eye discharge), prevention of eye diseases (such as after swimming, or when dust or sweat gets into the eyes), discomfort when wearing hard contact lenses

<Precautions related to Efficacy/Effects>


●Dosage and Administration
Instill 1 to 3 drops, 3 to 6 times a day.

<Precautions related to Dosage and Administration>
(1) When used by children, use under the guidance and supervision of a guardian.
(2) Do not let the tip of the container touch the eyes, eyelids, or eyelashes (this may cause contamination or foreign matter intrusion such as eye discharge or dust). Also, do not use if the solution is cloudy.
(3) Do not use while wearing soft contact lenses.
(4) For ophthalmic use only.

●Ingredients/Quantity
Per 100 mL
Retinyl palmitate 50,000 units
d-α-Tocopheryl acetate 0.05 g

〔Additives〕
Hypromellose (hydroxypropyl methylcellulose), boric acid, trometamol, edetate sodium, dibutylhydroxytoluene (BHT), povidone, polyoxyethylene polyoxypropylene glycol, isotonic agent, pH adjuster

<Precautions related to Ingredients/Quantity>


●Dosage Form
Eye drops (external use [ophthalmic and otorhinolaryngologic agent] - liquid)

●Precautions for Use
■Consult
1. Consult a doctor, pharmacist, or registered seller before use if you:
(1) Are receiving treatment from a doctor.
(2) Have had allergic reactions to medicines.
(3) Have any of the following symptoms: severe eye pain
(4) Have been diagnosed with glaucoma
2. If any of the following symptoms appear after use, stop using immediately and consult a doctor, pharmacist, or registered seller with this document as it may be a side effect.
[Affected area: Symptoms]
Skin: rash, redness, itching
Eyes: redness, itching, swelling, stinging pain
3. Stop use and consult a doctor, pharmacist, or registered seller with this document if:
(1) Blurred vision does not improve.
(2) Symptoms do not improve after about 2 weeks of use.
■Other precautions
Contains high-viscosity ingredients. Temporary blurred vision may occur after use, so please be careful.

●Precautions for Storage and Handling
(1) Store tightly closed in a cool place away from direct sunlight. To maintain quality, do not leave in high-temperature places (above 40°C) such as inside a car or near heating appliances.
(2) Keep out of reach of children.
(3) Do not transfer to other containers (this may cause misuse or change the quality).
(4) Do not share with others.
(5) Do not use products past the expiration date (printed on the bottom of the outer box). Even within the expiration date, use as soon as possible after opening.
(6) Contains an oxygen absorber to maintain quality. Dispose of the oxygen absorber after opening the transparent film.
◇ In consideration of the natural environment, no carrying bag is included.


My Account
Order Tracking
MamiGo
Shopping
  • Category List
  • Brand List
  • New product
  • Set product
Terms and Policies
  • Terms of Use
  • Notation based on the Act on Specified Commercial Transactions
  • Personal Information Handling Policy
  • Shop Information
Receive event information

We will notify you of the latest news, gifts, discount events, and more before anyone else.

American Express
Apple Pay
Google Pay
JCB
Mastercard
Shop Pay
Visa

© 2026 MamiGo, All rights reserved.