Diet
Supplements grouped by the way you eat: vegan, vegetarian, halal, kosher, keto, paleo and organic, plus options free from gelatine, yeast or sweeteners. Below we explain which forms suit which diet, and what to check.Read more →
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Choosing supplements that fit your diet
This collection groups products by what is on the label, not by what they promise. If you eat plant-based, keep halal or kosher, avoid yeast, or count carbohydrates, your first question is practical: does this product fit my rules? Here you filter first and read the ingredient list second.
Small ingredients decide whether a supplement fits
Most products fail on details, not on the main nutrient. Capsule shells often use gelatine from pork or beef. Vitamin D3 is usually made from lanolin, the grease from sheep's wool, while D3 from lichen is plant sourced. Omega-3 normally comes from fish oil, and algae oil delivers the same EPA and DHA without fish. Herbal tinctures are often extracted with alcohol, which matters on a halal diet. Collagen is an animal protein by definition, so plant-based alternatives combine amino acids with vitamin C instead.
Forms that make a dietary choice easier
- HPMC capsules: a shell of plant cellulose, the standard swap for gelatine, so they belong with our supplements without gelatine.
- Powders and liquids: no shell and no coating, so fewer hidden ingredients and a dose you can adjust.
- Softgels: check the gelatine source and the glycerine; fish gelatine is also used.
- Tablets: coatings can contain carmine from insects, shellac, or lactose as a carrier.
How we choose what goes in this collection
We select on three things: the form of the nutrient, the dose, and combinations that make sense. For diet-led shopping we prefer forms that already suit more people: D3 from lichen, MK-7 from fermentation, algae oil with EPA and DHA stated per capsule rather than per serving of oil. We buy directly from the brands, so certificates and labels match what is in the bottle, and our compliance team checks every product before it goes live. We test in-house and independent labs spot-check batches. And we stay honest: a vegan or keto badge tells you nothing about the dose inside. You can read how we select brands and products.
Who this collection suits
It suits you if a dietary rule already narrows your options, and you would rather not compare twenty labels yourself. On a low-carbohydrate plan, gummies and flavoured powders are the usual stumbling block, which is why our Keto-friendly selection sits separately. On a plant-based diet, vitamin B12 and iodine deserve attention, because plant foods supply little of either. In the UK, the NHS advises 10 micrograms of vitamin D a day during autumn and winter for everyone, whatever they eat.
Two honest points. First, a supplement adds to your food, it does not replace a varied diet, and a dietary label is not a quality mark on its own. Second, most nutrients build up slowly: give a new product two to three weeks of consistent use before you judge it. Vitamin B12 contributes to normal energy-yielding metabolism, and iron contributes to the reduction of tiredness and fatigue, but only when your intake was genuinely short. If you are unsure which gap applies to you, a blood test from your GP tells you more than any product page can.
Frequently asked questions
What does the Diet collection include?
It brings together supplements that match a dietary rule rather than a health goal. You will find vegan and vegetarian products, halal and kosher options, keto-friendly and paleo choices, organic products, and items free from gelatine, yeast, sweeteners, artificial colours or artificial flavours. The grouping is based on the ingredient list and the manufacturer's declaration, so you can filter on your own requirement first and then compare nutrient, form and dose.
Which nutrients need extra attention on a plant-based diet?
Vitamin B12 is the clearest one, because it comes almost only from animal foods or fortified products. Iodine, iron, calcium and long-chain omega-3 (EPA and DHA) are the others worth checking. Below are the UK reference intakes for adults, so you can compare them with the amount on a label.
| Nutrient | Adults 19 to 64 |
|---|---|
| Vitamin B12 | 1.5 mcg |
| Vitamin D | 10 mcg (400 IU) |
| Iodine | 140 mcg |
| Calcium | 700 mg |
| Iron (men) | 8.7 mg |
| Iron (women 19 to 49) | 14.8 mg |
How can I tell if a supplement really suits my diet?
Read past the front of the label. Four places hide animal or unwanted ingredients: the capsule shell (gelatine), the vitamin D source (lanolin from sheep's wool), the omega-3 source (fish or krill), and the coating or carrier (carmine, shellac, lactose, beeswax). Certification logos help, but the ingredient list is the final word. If a label only says "vegetable capsule", that normally means HPMC, made from plant cellulose.
Which capsule or tablet form should I choose?
The form decides more about dietary fit than the nutrient does. Use this to narrow it down.
| Form | Made from | Suits | Check |
|---|---|---|---|
| HPMC capsule | Plant cellulose | Vegan, halal, kosher | Nothing usually |
| Gelatine capsule | Pork, beef or fish | No plant-based diet | Animal source |
| Softgel | Gelatine plus glycerine | Fish oil users | Glycerine origin |
| Tablet | Pressed powder | Larger doses | Coating, lactose |
| Powder or liquid | No shell | Flexible dosing | Sweeteners |
Powders give the most control, capsules the most convenience.
Are supplements suitable on a keto or low-carbohydrate diet?
Most capsules and tablets carry a negligible amount of carbohydrate. The exceptions are gummies, chewables, flavoured powders and energy products, which can contain sugar, maltodextrin or sugar alcohols such as maltitol. Sugar alcohols count differently per person and can be hard on the gut in larger amounts. Check the nutrition panel for carbohydrate per serving, not per 100 grams, because serving sizes differ widely between products.
What should I look for in halal and kosher supplements?
Two ingredients cause most issues: gelatine, when the animal source is not declared or not certified, and ethanol, which is the standard solvent in many herbal tinctures. Magnesium stearate and glycerine can be either plant or animal derived. Certification by a recognised body is the most reliable signal, since it covers the manufacturing process too. Our halal-certified options are grouped separately for that reason.
Can I keep taking my usual supplements during pregnancy?
Not automatically, and this is independent of your diet. The NHS advises against supplements containing vitamin A as retinol during pregnancy, because too much can harm the baby. Folic acid and vitamin D are the two normally recommended instead. Multivitamins made for general use often contain retinol, so check the label or choose a product formulated for pregnancy, and ask your midwife or GP if anything is unclear.
How do I compare algae oil with fish oil fairly?
Compare the EPA and DHA content per capsule, not the total oil weight. A 1000 mg fish oil capsule may hold only 180 mg EPA and 120 mg DHA. Algae oil is often more concentrated in DHA and lighter in EPA, so one capsule is not automatically a like-for-like swap. Check both numbers on the panel and calculate the daily total. DHA contributes to the maintenance of normal brain function at 250 mg per day.
