Thorne Research is a US supplement brand that many athletes trust because a large part of its range is third-party tested, it makes its products in its own facility, and its labels name the exact form of each nutrient. When it comes to premium supplements trusted by health professionals, Thorne stands out as one of the most respected brands in the world, and at Supps247 we stock a focused Thorne range in Australia.
Known for strict quality control and research-led formulas, Thorne is used by athletes, doctors, nutritionists and everyday people who want to know exactly what is in each capsule. Thorne focuses on well-absorbed nutrient forms, such as magnesium citrate and malate, methylcobalamin (vitamin B12) and L-5-MTHF (folate). The form does matter for some nutrients, but the dose and whether you actually need the nutrient matter more.
Thorne Research at a glance
| Thorne product | In one capsule (label) | Why people use it | Price |
|---|---|---|---|
| Magnesium CitraMate | 135 mg magnesium (citrate and malate) | Muscle and nerve function, an evening routine | $79.95 |
| Stress B-Complex | 250 mg vitamin B5, about 28 mg vitamin B6, plus other B vitamins | Energy metabolism during busy periods | $74.95 |
| Basic B Complex | 8 B vitamins plus choline, 10 mg vitamin B6 | Everyday B vitamin cover | $69.95 |
| Vitamin C with Flavonoids | Vitamin C with citrus flavonoids | A daily vitamin C top up | $59.95 |
| Selenium 200 mcg | 200 mcg selenium (L-selenomethionine) | Antioxidant and thyroid support | $59.95 |
| Iron Bisglycinate | 25 mg iron | Low iron confirmed by a blood test | $34.95 |
Prices are live at the time of writing. The B complexes, Selenium and Iron come in bottles of 60 capsules, and Vitamin C with Flavonoids holds 90. Below is a closer look at each Thorne product in our Thorne Research collection and how it can support your health.
Why athletes trust Thorne Research
Thorne was founded in 1984 and makes its products at its own facility in South Carolina, so it controls each step from raw ingredient to finished bottle. Thorne says it has one of the largest NSF Certified for Sport product ranges available, and it partners with more than 100 professional sports teams and several US national teams.
NSF Certified for Sport is a US program that screens products for substances banned in sport and checks that the label matches what is inside. Two points matter for Australian athletes:
- Certification is product by product. Not every Thorne product carries it, so look for the NSF Certified for Sport mark on the label of the exact product you buy.
- Australia uses batch testing. Sport Integrity Australia works with the HASTA and Informed Sport programs, and its Sport Integrity App lists batch-tested products. It also reminds athletes that no supplement is 100% safe and that food comes first.
If you compete under anti-doping rules, check the Sport Integrity App and speak to an accredited sports dietitian before you add any supplement, Thorne included. For everyone else, Thorne's testing and plain labels are still a good sign that you are getting what you paid for.
The Thorne range at Supps247
Thorne Magnesium CitraMate
What it does: Magnesium is involved in hundreds of reactions in the body, including muscle, nerve and energy function. Magnesium CitraMate combines magnesium citrate and dimagnesium malate for 135 mg of elemental magnesium per capsule.
Why people use it: to support normal muscle function and relaxation, nervous system function and energy production, and to top up a diet that is light on nuts, seeds, legumes and whole grains.
When to use it: many people take it in the evening as part of a wind-down routine, but it can be taken any time with food. The upper level for magnesium from supplements is 350 mg a day for adults, so add up every product you take, including pre-workouts and electrolyte drinks.
Thorne Stress B-Complex
What it does: B vitamins help your body turn food into energy and support normal nervous system function. Stress B-Complex adds extra vitamin B5 (250 mg of pantothenic acid) to a full B complex with methylcobalamin and methyl-folate.
Why people use it: energy metabolism, busy or stressful periods, and diets low in B vitamins.
When to use it: in the morning with breakfast. One capsule gives about 28 mg of vitamin B6, based on Thorne's label. The TGA warns that high vitamin B6 intake can cause nerve damage (tingling, burning or numbness, usually in the hands or feet), and the risk cannot be ruled out below 50 mg a day. Stick to one capsule a day unless your GP advises otherwise, and check other products for B6 (listed as pyridoxine or pyridoxal 5-phosphate).
Thorne Basic B Complex
What it does: Basic B Complex covers all eight B vitamins plus choline, with 400 mcg of vitamin B12 as methylcobalamin and folate as L-5-MTHF.
Why people use it: everyday B vitamin cover, especially for people who eat little meat, fish or dairy, which are the main food sources of vitamin B12.
When to use it: with breakfast. With 10 mg of vitamin B6 per capsule, it is the gentler daily choice of the two Thorne B complexes we stock.
Thorne Vitamin C with Flavonoids
What it does: vitamin C supports normal immune function and collagen formation. This formula pairs it with citrus flavonoids, the plant compounds found naturally alongside vitamin C in citrus fruit.
Why people use it: a simple daily top up when fruit and vegetable intake is low, such as during a busy training block or travel.
When to use it: with a meal, following the directions on the label.
Thorne Selenium 200 mcg
What it does: selenium is a trace mineral that supports the body's antioxidant defences, normal thyroid function and the immune system. Selenium 200 mcg gives 200 mcg per capsule as L-selenomethionine.
Why people use it: as part of a daily wellness routine, particularly if their diet is low in seafood, eggs and whole grains.
When to use it: once a day with food. The recommended intake is 70 mcg a day for men and 60 mcg for women, and the upper level is 400 mcg a day, so do not double up with a multivitamin that also contains selenium or with a regular Brazil nut habit. If you have a thyroid condition, talk to your GP first.
Thorne Iron Bisglycinate
What it does: iron helps carry oxygen in the blood. Each capsule gives 25 mg of iron as bisglycinate, a form many people find easier on the stomach.
Why people use it: to correct low iron that a blood test has confirmed. healthdirect advises taking iron supplements only under medical supervision, because too much iron can be harmful. Talk to your GP before you start.
Thorne Liver Cleanse
What it does: Liver Cleanse combines chicory, burdock and milk thistle extracts with 125 mg of berberine per capsule. Thorne formulates it to support bile production and flow.
Good to know: research on these herbs in healthy people is limited and mixed. Thorne says not to use it if you are pregnant, breastfeeding or trying to conceive. Berberine is an active plant compound, so check with your GP or pharmacist first if you take regular medication. If you are worried about your liver, see your GP for a check rather than starting a supplement. It is $89.95 at the time of writing.
Thorne Zinc Picolinate, Rhodiola and Betaine HCL and Pepsin, which featured in the first version of this guide, are no longer on our online store.
Which Thorne product should you choose?
Thorne has built a global reputation for high-quality supplements that put purity and label accuracy first. The right product still depends on what your diet is missing:
- Training hard and want one Thorne product: Magnesium CitraMate is the easiest place to start for most people.
- Little meat, fish or dairy in your diet: Basic B Complex, one capsule a day.
- Want extra vitamin B5 for a busy period: Stress B-Complex, one capsule a day, and watch your total vitamin B6.
- Low iron: Iron Bisglycinate, only after a blood test and a chat with your GP.
- Drug-tested athlete: check the Sport Integrity App first, then choose.
If you would rather take one tablet that covers the basics, compare options in our best multivitamin guide, or browse our magnesium range. For more on everyday basics, read the best everyday supplements in 2026 and why magnesium forms matter.
How our price compares
Here is what the same products cost at other Australian supplement stores, so you can check the difference yourself.
| Product | Supps247 | Nutrition Warehouse | ASN | Elite Supps | Supplement Mart |
|---|---|---|---|---|---|
| Thorne Magnesium CitraMate | $79.95 | Not listed | Not listed | Not listed | Not listed |
| Thorne Stress B-Complex 60 caps | $74.95 | Not listed | Not listed | Not listed | Not listed |
| Thorne Vitamin C with Flavonoids 90 caps | $59.95 | Not listed | $39.95 (out of stock) | Not listed | Not listed |
| Thorne Iron Bisglycinate 60 caps | $34.95 | Not listed | $27.95 (out of stock) | Not listed | Not listed |
Supps247 prices come from our website. Other prices were checked on the websites of Nutrition Warehouse, Australian Sports Nutrition (ASN), Elite Supps and Supplement Mart on 29 October 2026 (same product and size, price for one unit) and can change at any time. Out of stock means it was listed but not available that day. Not listed means we could not find that exact product on their site. Supps247 members can use our Price Match Guarantee against Nutrition Warehouse, ASN, Elite Supps and Supplement Mart: we beat their full price by 5% or match their sale price (conditions apply).
Shop the products in this guide
Thorne Magnesium CitraMate$79.95
Thorne Basic B Complex 60 caps$69.95
Thorne Stress B-Complex 60 caps$74.95
Thorne Selenium 200 mcg 60 caps$59.95
Browse all Thorne Research supplements and vitamins and minerals.
FAQs
Is Thorne a good supplement brand?
Thorne is one of the most respected supplement brands in the world. It has made supplements since 1984, manufactures them in its own facility, lists the exact form of each nutrient on the label and says it has one of the largest NSF Certified for Sport ranges. Good quality does not mean you need every product, though. Pick the one that fills a real gap in your diet.
Are Thorne supplements safe for drug-tested athletes in Australia?
Many Thorne products are NSF Certified for Sport, a US testing program, but certification is product by product, so check the label of the exact product. Sport Integrity Australia works with HASTA and Informed Sport and lists batch-tested products in its Sport Integrity App. If you are tested, check the app and speak to an accredited sports dietitian before using any supplement.
What is the difference between Thorne Basic B Complex and Stress B-Complex?
Basic B Complex is the everyday option, with all eight B vitamins plus choline and 10 mg of vitamin B6 per capsule. Stress B-Complex adds a larger 250 mg dose of vitamin B5 and has about 28 mg of vitamin B6 per capsule. Because the TGA warns about nerve symptoms from high B6 intake, most people should take one capsule a day and add up B6 from all products.
Can I take Thorne Magnesium CitraMate every day?
Yes, Magnesium CitraMate is designed for daily use, and each capsule gives 135 mg of elemental magnesium. The upper level for magnesium from supplements is 350 mg a day for adults, so count any magnesium in your pre-workout, electrolytes or multivitamin too. If you have kidney problems or take regular medication, check with your GP first.
Where can I buy Thorne supplements in Australia?
You can buy Thorne supplements online at Supps247 with Australia-wide delivery, free on orders of $99.99 or more, and Afterpay available at checkout. You can also use click and collect at stores that offer it, or visit a Supps247 store in Victoria or Queensland. Stock of each Thorne product varies by store.
Sources: Thorne press release, Unrivaled names Thorne as official sports nutrition partner (Dec 2025); Sport Integrity Australia, new research on global supplement safety (2026); TGA, medicines containing vitamin B6; NHMRC Nutrient Reference Values, magnesium; NHMRC Nutrient Reference Values, selenium; healthdirect, iron deficiency; product labels and brand nutrition panels, checked October 2026.
Order online with Australia-wide delivery, free on orders of $99.99 or more, with Afterpay available at checkout. You can also use click and collect at a store that offers it, or visit a Supps247 store in Melbourne, regional Victoria or Brisbane to compare products in person. Members can use our member price match on full-priced items.
Prices and stock were checked on 29 October 2026 and can change at any time. Always read the label and follow the directions for use. If you have a medical condition, are pregnant or take regular medication, check with your doctor first.
