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FAQs

Delivery and Payment

Orders within the EU and Switzerland are usually delivered in 2-4 business days.

How much does shipping cost?

  • Home delivery (GLS) – €6,59

For all orders over €60, shipping is completely free!

You can pay for your order using the following payment methods:

  • Credit or debit card
  • PayPal
  • Apple Pay, Google Pay, or Shop Pay
  • Bank transfer / QR code
  • 3 interest-free installments via Klarna
Which sports are nitrates best suited for?

They have the biggest effect in sports:

  • with repeated high-intensity bursts (football/soccer, hockey, floorball, basketball)
  • endurance sports of moderate duration (running, cycling, rowing)
  • interval and high-intensity training
  • strength training with a higher work volume
What are nitrates and how do they work?

Nitrates are naturally occurring compounds (for example, in beetroot) that the body converts into nitric oxide (NO).

Nitric oxide widens blood vessels, improves blood flow and oxygen delivery to the muscles, which can lead to more efficient performance.

Can I combine nitrates with caffeine?

Yes. Nitrates and caffeine complement each other. Caffeine increases alertness and perceived energy, while nitrates improve performance efficiency.

Are nitrates safe for long-term use?

Yes, when the recommended dosage is followed, they are considered safe and well tolerated. They are among the most thoroughly researched substances in the field of sports nutrition.

Can I combine nitrates with caffeine?

Yes. Nitrates and caffeine complement each other. Caffeine increases alertness and perceived energy, while nitrates improve performance efficiency.

Couldn't find an answer to your question?

In that case, please visit our general FAQs.

Alternatively, drop us a message in the chat on our "Contact" page (bottom right) and we'll get back to you instantly. Prefer email? Reach us at info@officialcomplex.com and we'll reply within 24 hours.

Disclaimer

Food supplement. Not a substitute for a varied and balanced diet or a healthy lifestyle. Do not exceed the recommended daily dose.

If you are taking medication, have a medical condition, are pregnant or breastfeeding, consult a doctor or pharmacist before use. Not suitable for children or persons under 18 years of age.

Keep out of reach of children. Store in a dry place, below 25 °C, protected from direct sunlight and moisture. The minimum durability date is indicated on the packaging.