What the FDA labels say about taking them together
Arginine and setmelanotide
Setmelanotide's FDA label of April 1, 2026 names arginine in its warnings and precautions section; the arginine label PlainMeds reads does not name setmelanotide.
Check it at the source: the arginine FDA label on DailyMed (effective April 2, 2024, Pharmacia & Upjohn Company LLC); the setmelanotide FDA label on DailyMed (effective April 1, 2026, Rhythm Pharmaceuticals, Inc).
What does the arginine label say about setmelanotide?
Arginine's label (effective April 2, 2024) does not name setmelanotide in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (R-Gene), Pharmacia & Upjohn Company LLC, effective April 2, 2024 (SPL set 6accf33f-9841-4327-8923-93c42020ef12), via openFDA; the full label on DailyMed
What does the setmelanotide label say about arginine?
Setmelanotide label, warnings and precautionsImbalance in Patients with Acquired HO and Central Diabetes Insipidus In a clinical trial of adults and pediatric patients aged 4 years and older with acquired HO and concomitant central diabetes insipidus (DI)/arginine vasopressin (AVP) deficiency, hyponatremia was reported in 6% of IMCIVREE-treated patients and 2% of placebo-treated patients, and hypernatremia was reported in 5% of IMCIVREE-treated patients and 4% of placebo-treated patients.
Source: FDA drug label (Imcivree), Rhythm Pharmaceuticals, Inc, effective April 1, 2026 (SPL set 70c3ccf7-4df0-4c75-ba07-fede9970c8d9), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Arginine | Setmelanotide | |
|---|---|---|
| Labeled for | n/a | Weight management |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | n/a | n/a |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once