A bug food containing protein, enhanced with nutrobal with calcium & vitamin D3 for improving the calcium level of insects.

Nutrogrub is a nutritional supplement designed for feeding insects such as mealworms, crickets, and locusts, which will be used as a food source for reptiles, birds, and other insect-eating animals. It is based on a highly palatable vegetable protein source rich in calcium and B vitamins and is further enhanced by Nutrobal (our best-selling calcium balancer) and calcium carbonate.

Nutrogrub is based on a fine vegetable flour enhanced with our world-leading supplement Nutrobal and it’s superfine calcium. This has been hugely successful, with the latest independent laboratory tests showing increased calcium levels in crickets by x10, and in mealworms by x7. The protein content is designed to be low enough to ensure that the mealworms do not mature too quickly but is still more than adequate for support of the feeder insects.

Gut loading is useful in increasing calcium levels, and we recommend using this in combination with Nutrobal.


Millet flour, Bran, Calcium carbonate, Dextrose, Dicalcium phosphate, Sodium chloride.


Aminoacids: L-lysine-monohydrochloride 3c327 mg 4,938. Vitamins: Vitamin A 3a672a IU 37,500 – Vitamin D3 IU 11,500– Vitamin E 3a700 IU 1,470 – Choline chloride 3a890 mg 375 - Vitamin C 3a300 mg 188 – Niacinamide 3a315 mg 185 - Vitamin B2 mg 45 – Calcium D-Pantothenate 3a841 mg 42 - Vitamin B1 3a821 mg 38 – Vitamin B6 3a831 mg 23 – Folic acid 3a316 mg 11 – Vitamin K3 3a711 mg 3 – Vitamin B12 mg 0.09 – Biotin 3a880 mg 0.08. Compound of traces elements: Potassium iodide 3b201 (Iodium) mg 3.15 – Selenised yeast Saccharomyces cerevisiae CNCM I-3060, inactivated 3b810 (Selenium) mg 0.3 - Copper(II) sulphate pentahydrate 3b405 (Copper) mg 4.7 - Iron(II) carbonate (siderite) 3b101 mg 187.5 - Manganous sulphate monohydrate 3b503 (Manganese) mg 109 - Zinc sulphate monohydrate 3b605 (Zinc) mg 187. Anti-cacking agents: Silicic acid, precipitated and dried E551a mg 63.


Crude protein 9.7% - Crude fiber 2.0% - Crude fats 1.7% - Crude ashes 16.2% - Moisture content 9.5% - Calcium 6.5%.


Nutrogrub can be used dry or can be mixed into a paste with water-fed insects. Replace every 24-48rs if used in paste. Do not provide any other source of water or food in the 48 hours prior to using the insects as food.

Nutrogrub is a complementary feeding stuff designed for feeding insects such as mealworms, crickets, and locusts. It is based on a highly palatable vegetable protein source rich in calcium and B vitamins and is further enhanced with Vetark Nutrobal calcium balancer and calcium carbonate.

In addition to feeding crickets etc., it helps their protein level and is proven to enhance their calcium and vitamin D3 content prior to using them as feed for insect-eating birds and animals.

For animal use only



We and selected third parties use cookies or similar technologies for technical purposes and, with your consent, also for other purposes as specified in the cookie policy.
If you close this banner with a tick or click on "Decline", only technical cookies will be used. If you want to select the cookies to be installed, click on 'Customise'. If you prefer, you can consent to the use of all cookies, including cookies other than technical cookies, by clicking on "Accept all". You can change your choice at any time.