Direct sales (manufacturer to consumer) are the largest channel — companies like Kyowa Hakko sell citicoline directly to supplement brands. But indirect sales (through distributors and retailers) are the fastest‑growing. The citicoline market research study shows that indirect channels are growing at over 10% CAGR, driven by the explosion of e‑commerce.

What's the advantage of indirect? Consumers can buy citicoline from Amazon, iHerb, or Vitamin Shoppe without needing a prescription. The citicoline market trends highlight that the fastest‑growing channel is online, where customers read reviews and compare prices across brands.

But indirect sales have a downside: counterfeit products. Some third‑party sellers ship fake or adulterated citicoline. That's why you should buy only from reputable brands that third‑party test.

The bottom line: direct sales give you quality assurance. Indirect sales give you convenience and price competition. Choose wisely.