What do your medicines' labels say about heat?
Pick the medicines you take. For each one you will see what its FDA label says about heat, sweating, dehydration, dizziness on standing and the sun, word for word, and whether the CDC's 2025 guidance on heat and medications lists it or its class. It covers the 83 medicines in our label index. Nothing you pick leaves this page.
ADHD stimulants
Anticholinergics and antihistamines
Anticonvulsants
Antidepressants and lithium
Antipsychotics
Blood pressure and heart
Blood thinners
Diabetes and weight
Other
Pain relievers
Skin patches
Skin, hair, hormones and antibiotics
Sleep and anxiety
Pick one or more medicines to see what their labels say.
How to read the results
What the label says comes from the FDA label version in our index, checked 2026-10-04. Each line names the category, where in the label the words appear, and whether they are a direct statement (a warning, a listed side effect, advice to patients) or a mention only as a symptom of a rare reaction, of overdose, of withdrawal or with another drug. The quote is verbatim, and every entry links to the full label on DailyMed.
The CDC's guidance is Heat and Medications: Guidance for Clinicians (September 2025). We show a CDC note only where that page names the medicine, or names a class it plainly belongs to, in its table of medications or its list of the ways medicines raise heat risk. 55 of the 83 medicines have one.
A blank is not a safety claim. It means the label does not use the words we searched for. Many drugs on the CDC's list carry no heat wording on their label, which is why the checker shows both. Our guide to medications that raise heat risk explains the CDC's list in full.
Do not change or stop a medicine because of what you see here. The CDC's guidance is that patients should avoid stopping any medicine abruptly without a plan in place; take the results to your prescriber or pharmacist and ask for a plan for hot days.
Questions people ask
How does the medication and heat checker work?
Pick one or more of the 83 medicines in our label index. For each, the checker shows what its FDA label says about heat, reduced sweating, overheating, sweating, dehydration, dizziness on standing and the sun, word for word, and whether the CDC's 2025 guidance on heat and medications lists the medicine or its class. Nothing you pick leaves your browser.
If my medicine's label says nothing about heat, is it safe in a heat wave?
Not necessarily. A blank means the label does not use the words we searched for, not that the drug is safe in heat. Many drugs on the CDC's list, including beta blockers and sedating antihistamines, carry no heat wording on their label, which is why the checker shows both.
Should I change or stop a medicine because of what the checker shows?
No. The CDC's guidance is that patients should avoid stopping any medicine abruptly without a plan in place. Take what the checker shows to your prescriber or pharmacist and ask for a plan for hot days.
Why is my medicine not in the checker?
The checker covers the 83 medicines in our label index, chosen because our guides discuss them. If yours is not listed, its label on DailyMed is the place to look, and the CDC's guidance lists drug classes rather than single brands.
This page is general information, not medical advice. The label data is CC BY 4.0 and available as CSV and JSON. Corrections are logged on our editorial standards page.