Online materia medica — the directory

Anyone searching for an online materia medica meets the same problem from two directions. The classical texts are almost all out of copyright and freely available, yet they are scattered across archives in formats that range from clean hypertext to raw page scans. The polished commercial platforms bundle the same public-domain texts behind logins of varying generosity.

A materia medica describes remedies symptom by symptom — their characteristic mental, general, and particular indications, modalities, and keynotes. It is the companion volume to the repertory, which indexes symptoms back to remedies.

The directory at a glance

The first two rows are text archives — you read them as you would any digitised book. The remaining rows are working environments: the materia medica sits next to a repertory, search spans the whole corpus, and a case can move between the two. Which kind you need depends on whether you are reading for study or working a case.

The free text archives, in detail

Médi-T's collection at homeoint.org has been the default free online materia medica since the late 1990s, and it remains the fastest way to read a specific remedy entry in Boericke's Pocket Manual or Clarke's Dictionary without an account. The HTML is dated and navigation is remedy-list-driven, but the texts are clean transcriptions rather than scans, which matters when you want to quote or search within a page.

The Internet Archive holds the deeper shelf: Hering's ten-volume Guiding Symptoms, Hahnemann's Materia Medica Pura in the Dudgeon translation, and most nineteenth-century works exist there as scanned volumes. The OCR layer makes them searchable in principle; in practice the error rate on nineteenth-century typefaces means a failed search proves little.

What the free archives lack is cross-text search. Each text is an island: to compare what Boericke, Kent, and Clarke say about Pulsatilla, you open three tabs and collate by hand. That collation step is precisely what the platform tier automates, and it is why a reader outgrows the archives.

The platform tier

Similia's Free plan carries a classic materia medica library — readable and searchable in the browser, with semantic search that accepts plain-language phrases rather than exact keywords. The premium libraries (Murphy's Nature's Materia Medica, Vermeulen, Mangialavori and others) sit on Pro editions and one-time purchases, but the classical corpus a newcomer actually needs is on the free tier. Complete Dynamics takes a similar shape: a free browser edition with core texts, paid editions unlocking the full feature set. RadarOpus and Zomeo are desktop-first commercial suites whose libraries are licensed and extensive, but neither offers a meaningful free online reading tier.

A practical note on the modern interpretive literature: Vithoulkas, Sankaran, Scholten, and Vermeulen remain in copyright, so any site offering them free is either licensed, excerpting, or infringing. The legitimate online routes to those texts are the platform licences listed above.

Which to open first

For assigned classical reading, start at Médi-T and fall back to the Internet Archive for anything pre-1900. To get a sense of what a remedy entry actually looks like, read one short entry — Boericke's Arsenicum album is two pages — and then the corresponding entry on Arsenicum album, which situates the keynotes and modalities in relation to the wider classical literature.

A self-study case is a different workflow. It is repertory-first: find the rubrics, shortlist remedies, then read the materia medica to differentiate — a loop the text archives cannot close. For that you need the platform tier, where you can search a free repertory by symptom and read the matching materia medica entries in the same window.

On condition-oriented lookup tables

Remedy-for-ailment lookup tables collapse the descriptive structure of the classical texts into a symptom-to-remedy index that strips away the qualifying generals, modalities, and keynotes which differentiate closely related remedies. The texts above are primary literature for a 200-year practice tradition, to be read alongside a working repertory rather than mined as a lookup.

References

Médi-T (1998–2026) Homéopathe International — Books on Materia Medica, http://www.homeoint.org/, hypertext editions of Boericke, Clarke, Kent and others.

Internet Archive (2026) Texts collection — homeopathic materia medica scans, https://archive.org/.

Similia (2026) Knowledge base — Free plan features, classic Materia Medica library, semantic search, premium libraries, https://similia.crisp.help/.

Complete Dynamics (2026) Editions and pricing, https://www.completedynamics.com/.

Zeus Soft (2026) RadarOpus — libraries and editions, https://www.radaropus.com/.

Mind Technologies (2026) Hompath / Zomeo — features, https://www.hompath.com/.