Robert Franz

The Robert Franz range: OPC 65 capsules, the brand's number one, plus favourites such as vitamin B12 pastilles, vitamin D3 drops, vitamin C, Vitstoff Complex, MSM, cordyceps and coenzyme Q10, as well as teas, body care and books. The brand is led by Robert Franz, widely known as “OPC Franz”. Viterna from Eibiswald is a Robert Franz Shop Partner. Read the guide ↓
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Barefoot, full beard, purple clothes: that is how many people know Robert Franz from his videos and talks.

Behind the brand is a man with an unusual life story. Raised in Romania, trained as a car mechanic, a motorcycle stuntman in his youth and later a refugee who fled to Germany. Today he is one of the best known names in food supplements in the German-speaking world, often simply called “OPC Franz”.

On this page you will find out who is behind the brand, what the range includes and which products our customers order most. All figures are taken from the product pages.

Hands holding a dark violet glass jar over a wooden table with grapes, grape seeds and herbs
Symbolic image: AI-generated

Who is Robert Franz?

Robert Franz did not start out in a laboratory or a lecture hall, but in a workshop. He likes to point out that he is a mechanic, not a medical professional. In his own words, he picked up his knowledge of herbs and nature as a child in Romania, spending long stretches in the forests with his parents.

He became known through talks, books and YouTube videos about vitamins, minerals and plant compounds. His name is so closely linked to grape seed extract that many people simply call him “OPC Franz”.

In 2014 he founded Robert Franz Naturversand GmbH in Neubrunn near Würzburg. The products you find here are brought to market under its name, from OPC and vitamins to DOGenesis pet food. And the purple? It runs from his beard all the way to the shelf: many products come in dark violet glass.

Robert Franz Shop Partner from Eibiswald: We at Viterna are a Robert Franz Shop Partner and ship the range from Eibiswald in Styria, Austria.
Profile
  • Born: 1960
  • Origin: raised in Romania
  • Trade: trained car mechanic, former motorcycle stuntman
  • Nickname: “OPC Franz”
  • Trademarks: full beard, purple, barefoot in every season
  • Company: Robert Franz Naturversand GmbH, founded 2014
  • Based in: Neubrunn near Würzburg, Germany
  • At Viterna: Robert Franz Shop Partner from Eibiswald
  • Books: including “OPC: Das Fundament” and “Codex Humanus” (in German)

What the Robert Franz range includes

The range runs from the classic OPC 65 to vitamins as drops and pastilles, teas, bath products and books. To help you find your way, we have sorted it into eight groups.

2014
Robert Franz Naturversand GmbH founded
455 mg
OPC in 2 capsules of OPC 65
65 %
OPC share in the grape seed extract of OPC 65
Purple
violet glass as the trademark of many products
OPC and plant extracts
OPC 65 as capsules, powder and multipacks, plus resveratrol, quercetin, turmeric, olive leaf extract and black seed oil.
Vitamins
Vitamin D3 and K2 as drops, B12 as capsules, drops and pastilles, B complex, niacin, folic acid, vitamins C and E.
Minerals
Magnesium in several compounds, zinc, selenium, copper, potassium, chromium, iron and a multimineral.
Amino acids and more
L-arginine, L-lysine, L-tryptophan, L-carnitine, L-glutathione, carnosine, coenzyme Q10, NADH and alpha-lipoic acid.
Complexes
Several nutrients in one jar: Vitstoff Complex, children's vitamins, Senior Powder, Men's Capsules, Wechsel Power 45+ and Hair Complex.
Drops, powders, teas
Jodavit, Paradies Trunk, organic bitter drops, alkaline powder, heather flower and elecampane root tea.
Body care and bath
Hyaluronic cream with OPC, magnesium oil for the skin and magnesium flakes for foot and full baths.
Books and accessories
Four books, a capsule filling machine with empty capsules to fill yourself, and DOGenesis pet food.

Number one: OPC 65 capsules

OPC stands for oligomeric proanthocyanidins. These are plant compounds from the flavonoid family, found in particularly high concentrations in grape seeds. They were described in 1948 by the French pharmacologist Jack Masquelier at the University of Bordeaux, first in peanut skins, later in pine bark and grape seeds.

OPC 65 capsules are the number one in the Robert Franz range. The “65” in the name is not a milligram figure but the OPC share of the grape seed extract: 65 % of the extract is OPC. The chart below shows what that means per capsule.

No. 1 at Robert Franz
Robert Franz OPC 65 capsules
Robert Franz
OPC 65 capsules
1 to 2 capsules daily · 60 capsules
OPC
455 mg
Extract
700 mg
Share
65 %
Lasts
30 days
Also: plant-based capsule shell, only two ingredients, values for 2 capsules
Also available as: 3-pack, 6-pack and 10-pack, or to stir in as OPC powder
View product
Chart: how much OPC one and two capsules of OPC 65 contain, calculated from the amount of extract and the OPC share
Work it out yourself: extract in mg times the OPC share. One capsule of OPC 65 contains 350 mg of extract, 65 % of which is OPC, so 227.5 mg. Two capsules a day provide 455 mg of OPC.
OPC from grape seeds
Vitis vinifera, oligomeric proanthocyanidins
OPC has no nutrient reference value. That is why we describe OPC by its origin, amount and share in the extract. The same applies to resveratrol, quercetin, turmeric and the other plant extracts in the range.

Popular after OPC: our customers' favourites

After OPC 65, these are the Robert Franz products our customers order most often. For the vitamins they contain there are claims assessed and authorised by the EU. They apply when a daily dose provides at least 15 % of the nutrient reference value (NRV). We quote them word for word.

Vitamin B12 pastilles
Vitamin B12 pastilles
“Vitamin B12 contributes to the reduction of tiredness and fatigue.”
Per day: 1 pastille with 1,000 µg, 100 days
Made with: methylcobalamin, cherry flavour, xylitol
Vitamin D3 drops
Vitamin D3 drops
“Vitamin D contributes to the normal function of the immune system.”
Per day: 1 drop with 25 µg (500 % NRV)
Made with: MCT oil from coconut, around 1,700 drops
Vitamin C 1000 mg
Vitamin C 1000 mg
“Vitamin C contributes to the normal function of the immune system.”
Per day: 1 tablet with 1,000 mg (1,250 % NRV)
Made with: ascorbic acid, citrus bioflavonoids, rosehip
Vitstoff Complex
Vitstoff Complex
“Thiamin contributes to normal energy-yielding metabolism.”
Per day: 3 capsules with 3.3 mg vitamin B1 (300 % NRV)
Made with: 12 vitamins, 8 minerals, Q10 and amino acids

MSM, cordyceps and coenzyme Q10 are also very popular.

MSM powder and capsules
MSM powder and capsules
Methylsulfonylmethan
An organic sulphur compound. The powder is 99.99 % MSM and comes with a measuring spoon; the capsules are ready-portioned.
Per day: 500 mg: half a measuring spoon of powder or 1 capsule
Cordyceps
Cordyceps
Cordyceps sinensis, mushroom powder
A sac fungus that has been known in traditional Chinese cuisine and teaching for centuries. The capsules contain ground mushroom powder.
Per day: 4 capsules with 1,200 mg, split into two servings
Coenzyme Q10
Coenzyme Q10
Ubiquinone
The body makes Q10 itself, and small amounts are also found in meat, fish and nuts. There is no nutrient reference value for Q10.
Per day: 1 capsule with 100 mg, 60 days

You will find all products for the individual vitamins in our categories Vitamin D, Vitamin B12 and Vitamin C.

Three myths we often hear

Myth 1
“OPC 65 means 65 mg of OPC per capsule.”
Fact: The 65 stands for an OPC share of 65 % in the extract. One capsule contains 350 mg of extract and therefore 227.5 mg of OPC, well over 65 mg.
Myth 2
“MSM is a mineral.”
Fact: MSM is an organic sulphur compound, not a mineral like magnesium or zinc. It has no nutrient reference value.
Myth 3
“Natural means the amount doesn't matter.”
Fact: Nutrients from nature have upper limits too. For adults, EFSA sets for example 100 µg of vitamin D, 255 µg of selenium and 25 mg of zinc a day, from all sources combined.

Good to know when taking them

✓
Add up, don't double up
Complexes such as the Vitstoff Complex or the multimineral often contain the same nutrients as single products. Add up all amounts before combining them and stay below the EFSA upper limits.
✓
Count drops carefully and keep them cool
With the vitamin D3 drops, a single drop already contains 25 µg. A 50 ml bottle holds around 1,700 drops and should be kept in the fridge once opened.
✓
Pastilles with xylitol
The B12 pastilles are 76 % xylitol, a sweetener. Excessive consumption may have a laxative effect. According to the manufacturer they are not suitable for pets, so keep them away from dogs and cats.
✓
Check the capsule shell
OPC 65 and selenium come in a plant-based shell made of hydroxypropyl methylcellulose, whereas the vitamin E capsules use beef gelatine. Full ingredients are listed on every product page.

Read more at Viterna

Frequently asked questions

Who makes Robert Franz products?+
The responsible company is Robert Franz Naturversand GmbH, based in Neubrunn, Germany. Viterna from Eibiswald is a Robert Franz Shop Partner. Manufacturer details are also shown on every product page.
What does the 65 in OPC 65 mean?+
It gives the OPC share of the grape seed extract. One capsule contains 350 mg of extract, 65 % of which is OPC. That makes 227.5 mg of OPC per capsule and 455 mg for two capsules.
How do I take the Vitstoff Complex?+
The manufacturer recommends 2 to 3 capsules once a day with liquid at a meal. The nutritional values on the product page refer to 3 capsules, so a jar of 90 capsules lasts 30 days.
How do I dose the MSM powder?+
According to the manufacturer, stir 500 mg, which is half a measuring spoon, into a drink once a day. If you prefer not to use powder, take 1 MSM capsule with 500 mg instead.
Are there books by Robert Franz at Viterna?+
Yes, for example “OPC: Das Fundament”, “Mein Jodbuch” and “Erlebt mit mir die Natur” (all in German). You will find them in the product list above and in our Books category.
In short
Robert Franz is best known for OPC 65, but the range is much broader. With OPC 65 it pays to look at the amount per daily dose, not just the number in the name.
KEY POINTS
  • A wide range, from OPC and vitamins to teas and books.
  • OPC per day = amount of extract times OPC share.
  • Popular after OPC: B12 pastilles, D3 drops, vitamin C, Vitstoff Complex, MSM, cordyceps and Q10.
  • Authorised claims exist for vitamins.
  • Add up the amounts from all products.
Note: Health claims refer exclusively to the nutrients named and comply with Regulation (EU) No 432/2012. Food supplements are not a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. Keep out of the reach of young children.