April 16 (Reuters) - Swiss online drug delivery company DocMorris slightly missed first-quarter sales expectations on Tuesday, as revenue from prescription medicines declined and e-prescriptions could not yet be redeemed fully digitally at online pharmacies.

DocMorris posted external revenue of 262.4 million Swiss francs ($287.47 million), 1.4% below analysts' expectations according to a company-provided poll, but up 5.5% from a year earlier.

Online pharmacies such as DocMorris and Redcare Pharmacy have focused on e-prescriptions in Germany in order to improve profitability.

DocMorris reported an external revenue of 247 million Swiss francs in Germany, representing 94% of the company's total external sales.

Netherlands-based peer Redcare saw its first-quarter sales grow by 51% year-on-year to reach 560 million euros ($594.38 million). ($1 = 0.9128 Swiss francs) ($1 = 0.9422 euros) (Reporting by Tristan Veyet and Chiara Holzhaeuser in Gdansk; Editing by Jamie Freed)