Holland & Barrett Supreme Sunflower seeds are 100% organic seeds to smile about - they're a good source of vitamin E, a popular and nutritious snack, high in fibre and provide a source of protein. They can also be added to many sweet and savoury dishes. All hail the sunflower! Holland & Barrett Supreme Sunflower seeds are 100% organic seeds to smile about - they're a good source of vitamin E, a popular and nutritious snack, high in fibre and provide a source of protein. They can also be added to many sweet and savoury dishes. All hail the sunflower!