Bonusan

In the Netherlands, at the company's own production site in Numansdorp, which has been in use since 1968. Making products in house means the brand controls sourcing, formulation and testing in one place instead of handing it to a third party. Practically, that gives you traceable batches and consistent formulas. We buy our stock directly from the brand, with no intermediaries, so what arrives with you is authentic.

Yes, the form decides how much work your body has to do before it can use a nutrient. Bonusan mostly picks forms that are already active, so no conversion step is needed. That is one of the main reasons we carry the brand.

Some are, some are not, so read the label per product. The vitamin D3 in Bone Formula is vegan, and many tablets use cellulose capsules or fillers. But the krill oil capsule wall contains fish gelatin, lactoferrin is made from milk protein, and the Bacteri sachets use maltodextrin, inulin and FOS as carriers. The brand leaves out synthetic colours, flavours and fragrances, though functional additives such as sorbitol are used where a capsule needs to stay flexible.

Most Bonusan tablets and capsules are meant to be taken during or straight after a meal, which helps with fat-soluble nutrients such as vitamin D3 and omega-3. The Bacteri sachets are different: they are mixed into a glass of water, preferably on an empty stomach before bed or half an hour before breakfast. Give any daily supplement two to three weeks of consistent use before judging it. With probiotic supplements, some wind in the first week is common and usually settles.

Because of what goes into them. Active forms such as pyridoxal-5-phosphate, methylcobalamin and MK-7 cost more per gram than the cheaper basic forms, and standardised herbal extracts are pricier than plain powders. You also pay for testing: the brand checks quality in its own laboratory and again externally. That is a fair trade if you care about the exact form on the label. If you only need to top up a basic daily amount, a simpler product can be enough.

UK guidance is 10 micrograms (400 IU) a day for most people, and everyone is advised to consider a supplement during autumn and winter, when sunlight here is too weak. That matters when reading Bonusan labels, because products such as Vitamin D3 75 are dosed well above the basic amount. Use the reference values below to see where a product sits.

Yes. If you use anticoagulants, often called blood thinners, such as coumarin derivatives, speak to your doctor or pharmacist before starting a product with vitamin K. Vitamin K can affect how those medicines work. This applies to combinations such as Vitamin D3 & K2 Forte and to bone formulas that include K2 as menaquinone-7. Product labels carry the same warning, and it is worth taking seriously rather than treating as small print.

The cPNI products are a separate part of the range, developed for certified PNI therapists rather than for general use. They are usually dosed around a personal plan, with specific timing instructions, and several carry restrictions: some are not for use during pregnancy or breastfeeding, and formulas with St John's wort can interfere with medicines such as antidepressants and sedatives. You can buy them, but the brand itself advises getting advice from a certified PNI therapist first. For everyday use, the general range is the sensible starting point.