I'm not so sure. I depends on the carrier.
Injectible Winstrol is water based (bacteriostatic water is part of it), or, less often it is suspended in oil. You can take this kind orally as ktatro said.
But the oral form may be dissolved or suspended in something else that you may not want to inject. As a heads up, even if it's just water based, water based anabolics like Winny and Test Suspension are more often associated with infections, so be careful, mate.
Were I using Winny, I'd take it orally.