With high temperatures in the nineties this week, many are feeling the heat.

That's especially the case for those with a medical condition that can be worsened by sun exposure, including diabetes, multiple sclerosis, lupus, rheumatoid arthritis and migraines, according to the World Health Organization and Cedars-Sinai Health System.

Local pharmacists warn that medications could become deactivated or chemically change if they're exposed to heat or light, often from being left in a hot car while running errands. 

"Try to get to the pharmacy, maybe make it your last stop during the day, and get home as quick as possible just to make sure it's not in the heat for too long," pharmacist Abby Beadle of Hometown Pharmacy said.

Prescription drugs should never be put in the freezer, since cold temperatures can also cause damage.

Storage instructions are typically found on the pharmacy's label.

"Most medications, they'll say on the bottle they should be kept at room temperature," Beadle noted. "Some antibiotics that get mixed for children will say if they have to be kept at room temperature, or in the fridge."

Changes in appearance, smell, or texture could mean your medication has been damaged.

If you have questions on whether your medications have been affected by heat or improper storage, contact your local pharmacy or care provider.