Greetings,
Compulsory Swiss health insurance covers medicines which are included in the List of Pharmaceutical Specialties maintained by the Federal Office of Public Health. When a generic alternative is available, only 80% of the non-generic counterpart is covered.
Supplementary health insurance policies may cover the cost of medicines which are not listed on the List of Pharmaceutical Specialties and provide additional coverage for non-generic medicines. They may also cover the cost of complementary medicine.
However, the exact coverage for medicines differs between individual supplementary insuance policies and is listed on individual information pages in the supplemental health insurance comparison.
So to answer your question: Yes, some medicines are covered by your basic health insurance policy and others may be covered by your supplemental health insurance policies.
Best regards from Moneyguru
More on this topic:
Compulsory Swiss health insurance: Overview of coverage
Supplemental health insurance comparison