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.

Magnesium 250mg

High strength magnesium citrate.

Magnesium is an essential mineral for over 300 enzymatic processes within the body, and without it, these processes are impaired. Dietary intakes are often found to be low, and low levels are exaggerated due to modern lifestyle factors which increase demand such as stress, smoking, alcohol consumption and a high sugar intake. Magnesium is required for normal psychological function and normal nerve function and is often found to inadequate in people with low moods and low mental outlooks.  Magnesium is also required for sleep and the relaxation hormone GABA. Magnesium is required directly for the energy production cycle for the creation of energy. It is needed for the normal function of muscles and may help to prevent cramping and stiffness. Magnesium is particularly beneficial for the heart muscle and for regulating high blood pressure.  As a key structural mineral in bones and teeth, adequate levels of magnesium are required for their maintenance, particularly for weak bones and osteoporosis. Magnesium 250mg is a high strength supplement that is gentle on the stomach.


  • High potency
  • Bioavailable
  • Absorbable form


Take one a day with food. Swallow with water.


Magnesium Citrate, Bulking Agent (microcrystalline cellulose), Dicalcium Phosphate, Silicified Microcrystalline Cellulose, Glazing Agent (hydroxylpropylmethylcellulose, microcrystalline cellulose, stearic acid, calcium carbonate), Croscarmellose Sodium, Anti-caking agent (magnesium stearate).