by prescription

idiom

US
: by having a written message from a doctor that officially tells one to use a medicine, therapy, etc.
The drug is only available by prescription.

Examples of by prescription in a Sentence

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The topical version of minoxidil is available over the counter (primarily under the brand name Rogaine) at concentrations of 2-5%, and by prescription at stronger concentrations of 10-15%. Rebecca Strong, USA Today, 16 Feb. 2026 Kottikollon’s approach diverges sharply from Silicon Valley’s model, often defined by prescription-heavy biohacking and evangelized by the likes of Bryan Johnson. Mark Ellwood, Robb Report, 14 Feb. 2026 The pill is now available by prescription in most major pharmacies or direct from NovoCare, the online pharmacy of its creator, Novo Nordisk. Sean Hashmi, EverydayHealth.com, 16 Jan. 2026 For those who begin to experience flu symptoms – high fever, chills, muscle aches, headache, extreme fatigue, cough, sore throat, and congestion – antiviral medications, such as oseltamivir (Tamiflu), are available by prescription. Rick Sobey, Boston Herald, 5 Jan. 2026 See All Example Sentences for by prescription

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“By prescription.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/by%20prescription. Accessed 22 Feb. 2026.

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