Medicare Part D drugs starting with W
12 drugs start with W; 3 of them are on at least 90% of 2026 Part D formularies. Part D spending was highest for Wegovy in 2024: $301 million, what plans and patients paid at the pharmacy before rebates.
Which drugs start with W?
| Drug | Plans covering | Usual tier | Medicare spending, 2024 |
|---|---|---|---|
| Wainua (eplontersen) | 0.9% | Tier 5 | $57 million |
| Wakix (pitolisant) | 2.9% | Tier 5 | $132 million |
| Warfarin sodium | 100% | Tier 1 | $44 million |
| Wayrilz (rilzabrutinib) | 0.3% | Tier 5 | no 2024 match |
| Wegovy (semaglutide) | 0.9% | Tier 5 | $301 million |
| Welireg (belzutifan) | 100% | Tier 5 | $205 million |
| Wellbutrin (bupropion hydrochloride) | 0.2% | Tier 5 | $87 million |
| Wezlana (ustekinumab-auub) | 2.2% | Tier 5 | no 2024 match |
| Winrevair (sotatercept-csrk) | 100% | Tier 5 | $185 million |
| Wixela (fluticasone propionate / salmeterol) | 88.9% | Tier 2 | $197 million |
| Wymzya Fe (ethinyl estradiol / norethindrone) | 71.6% | Tier 2 | $5 thousand |
| Wyost (denosumab-bbdz) | 60% | Tier 5 | no 2024 match |
Source: CMS Part D formulary file, 2026 second quarter; CMS Medicare Part D Spending by Drug, 2024.
What else should you check?
- Every drug, by letterAnd the 20 that cost Medicare most
- Stand-alone drug plans for 2027Premiums and deductibles
- Part D in 2027What changes for drug plans