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Magnesium Trisilicate



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Food additive (e number)

Pharmaceutic aid


Physical sunscreen

Chemical Name

Silicic acid (H4-Si3-O8), magnesium salt (1:2) anhydrous (USP)

Foreign Names

  • Magnesii trisilicas (Latin)
  • Magnesiumtrisilicat (German)
  • Magn├ęsium (trisilicate de) (French)
  • Magnesio, trisilicato de (Spanish)

Generic Names

  • UNII-FML8G1U0Y3 (IS)
  • Magnesium Silicate (PH: NF 33)

Brand Names

  • Alamcid (Magnesium Trisilicate and Aluminium Hydroxide)
    Swiss, Pakistan
  • Antasil (Magnesium Trisilicate and Aluminium Hydroxide)
    Krka-Pak, Pakistan
  • Dhalumag (Magnesium Trisilicate and Aluminium Hydroxide)
    DHA, Malaysia
  • Eldopaque (Magnesium Trisilicate and Hydroquinone)
    A. Menarini, Hong Kong; ICN, Oman; Valeant, Bahrain; Valeant, Costa Rica; Valeant, Guatemala; Valeant, Honduras; Valeant, Nicaragua; Valeant, El Salvador; Valeant Grossman, Mexico
  • Eldopaque Forte (Magnesium Trisilicate and Hydroquinone)
    ICN, Oman
  • Gastrogel Antacid (Magnesium Trisilicate and Aluminium Hydroxide, + Magnesium Hydroxide)
    Aspen Hong Kong Pty, Hong Kong; Sigma, Hong Kong
  • Gaviscon (Magnesium Trisilicate and Aluminium Hydroxide)
    GlaxoSmithKline Consumer Healthcare, United States
  • Gelusil (Magnesium Trisilicate and Aluminium Hydroxide)
    Johnson & Johnson, Hong Kong; Pharma Dynamics, South Africa
  • Maalox (Magnesium Trisilicate and Aluminium Hydroxide)
    Sanofi-Aventis, Thailand
  • Magsil
    DHA, Malaysia
  • Mefenamic Acid Chen Ho (Magnesium Trisilicate and Mefenamic Acid)
    Chen Ho, Taiwan
  • Silox (Magnesium Trisilicate and Dimeticone, + Aluminium)
    Jean-Marie Pharmacal, Hong Kong
  • Zeller Magen (Magnesium Trisilicate and Calcium Carbonate)
    Zeller Medical, Switzerland


ISInofficial Synonym
PHPharmacopoeia Name
USPPharmacopoeia of the United States

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.