Every over-the-counter medicine in the United States carries a Drug Facts label. The FDA standardized its format in 1999, so the same sections appear in the same order on every box. Once you know the layout, you can size up any product in under a minute, the way a pharmacist does.
1. Active ingredient and purpose
This is the most important line on the box. It names each medicine in the product, the amount in each tablet, caplet or dose, and what it's for. On a guaifenesin product you'll see something like "Guaifenesin ... mg, Expectorant."
Pharmacist tip: read this section on every cold product you own. It's the only reliable way to spot the same ingredient hiding in two different boxes.
2. Uses
This lists the symptoms the product is approved to relieve. For guaifenesin, it's to help loosen phlegm (mucus) and thin bronchial secretions to make coughs more productive. If your symptom isn't listed, the product isn't designed for it.
3. Warnings
The longest section, and the one most people skip. It's divided into clear headings:
• Do not use: situations where the product should never be used.
• Ask a doctor before use if you have: health conditions that need a doctor's input first. For guaifenesin, that includes a persistent or chronic cough, such as from smoking, asthma, chronic bronchitis or emphysema, or a cough with excessive phlegm.
• Ask a doctor or pharmacist before use if you are: usually about other medicines you take.
• Stop use and ask a doctor if: signs that something more serious may be going on. For guaifenesin: a cough that lasts more than 7 days, comes back, or occurs with fever, rash or persistent headache.
• If pregnant or breast-feeding: ask a health professional before use.
• Keep out of reach of children, plus what to do in case of overdose.
4. Directions
How much to take, how often, and the most you can take in 24 hours, usually broken out by age. Pay close attention to the age groups. Some products give no dose for younger children and say to ask a doctor instead.
Pharmacist tip: the daily maximum matters as much as the single dose. Count every dose across the day, including doses from any combination product.
5. Other information
Storage instructions and similar details, such as keeping the product at room temperature or noting a tamper-evident seal.
6. Inactive ingredients
Everything in the product besides the medicine: binders, fillers, coatings, flavors and dyes. This is where you'll find dyes such as FD&C colors, if a product contains them. People with sensitivities often check this section first.
7. Questions or comments
Many labels end with a phone number for the manufacturer. It's a useful resource if you have a question about the product itself.
Three habits worth keeping
1. Read the active ingredients on every product before combining medicines.
2. Check the daily maximum and keep track of your doses.
3. Re-read the label when you buy a new box. Formulas and strengths can change.
The bottom line
The Drug Facts label is a short, standardized guide written for you. A minute spent reading it is the easiest safety step there is.
You can read the full Drug Facts for Guai-Aid® Ultra Pure Expectorant before you buy: view the Drug Facts or shop Guai-Aid.
Read and follow the Drug Facts label. Ask a pharmacist or doctor if you have questions.