With time, the use of Pharmaceutical colours has increased widely. Over the years, a wide range of colours have been researched and approved by authorized health and safety labs from across the world.
From pink and yellow to blue and green, capsules and tablets are now available in a variety of colours. It helps the medical practitioner and pharmacists to identify the medicine. Pharma colour manufacturers also make it easier for patients to gulp down a medicine which was otherwise unappealing for consumption.
Pharma lake colours are different from cosmetic lake colours. But pharma grade lake colours suitable for the pharma industry are also available for colour coatings. Bleed-resistant grade pigments are used in pharma to avoid spillage of contents due to the ingredients in the colour. High-purity synthetic and natural colourants are used to make pharma grade colours as per international standards and country-specific guidelines are followed as required.
Inorganic Colourants for Pharma
Most common inorganic colourants for pharma are Titanium Dioxide, silicate, oxides, carbonates and hydroxides. Opaque film coatings are possible with inorganic colourants. These colourants are highly dispersible and come with prescribed amount of minerals after rigorous testing.
Colour lakes provide more number of colour options with brighter shades to choose from. They have more stability compared to water soluble colours. Organic lake colourant for Pharma are highly stable and oil soluble. They are versatile and with good dispersion properties.
Dyes with water soluble properties are used as Pharmaceutical colours with a range of red, yellow, blue and more colour options. These colours might display their colour when dissolved in water. The source of light plays an important role in the appearance ofwater soluble colourant for pharma.