Contract Manufacturing

Quest provides contract-manufacturing services for strategically selected partners. We can contract manufacture existing products from our portfolio and also custom develop and manufacture new products, formulations and concepts for our partners. All the products are manufactured and quality tested in our GMP facilities.

We have the following contract-manufacturing capabilities:

  • Tablets and/or capsules nutraceutical products in bulk, bottles or blister packs.
  • Powder nutraceutical products in bulk or sachet packs.
  • Liquid nutraceutical products in bulk or bottle packs.

Forte D Liquid

Easy to take liquid, 1000iu vitamin D3 per drop

Forte D Liquid is an easy to take liquid providing 1000 iu per drop. Vitamin D is required for the normal function of the immune system and contributes to the normal function of bones and teeth. A vitamin D supplement is officially recommended for those at risk of a vitamin D deficiency. Forte D Liquid is easy to take, tasteless and ideal for those who cannot or do not want to swallow tablets.


1000 iu vitamin D3 per drop


One to four drops daily with or after a meal. Shake well before use.


Sunflower Oil, Vitamin D3 (with medium chain triglycerides, dl-alpha-tocopherol), Precipitated Silicon Dioxide.