How to match a medication to the condition it is indicated for
PTCB topic: Indications
- An indication is the condition a drug is approved to treat or prevent.
- Sumatriptan treats a migraine attack; it does not prevent migraines.
- Albuterol is the rescue inhaler; fluticasone and montelukast are not.
- Levothyroxine treats hypothyroidism and is not for weight loss.
- Finasteride 5 mg treats BPH; finasteride 1 mg treats male hair loss.
Key facts
- Levothyroxine (Synthroid) is replacement therapy for hypothyroidism, and its boxed warning says thyroid hormone is not for obesity or weight loss.
- Sumatriptan (Imitrex) tablets are for acute treatment of migraine with or without aura in adults, not for prevention or cluster headache.
- Albuterol HFA (Ventolin HFA) treats or prevents bronchospasm and is the rescue inhaler in this group.
Show all 5 key factsShow fewer
- Fluticasone HFA and montelukast (Singulair) are long-term asthma drugs whose labels say they are not for acute bronchospasm or an acute attack.
- Finasteride 5 mg (Proscar) treats symptomatic BPH, while finasteride 1 mg (Propecia) treats male pattern hair loss in men.
Quick check1 question · 2 more at the end
Levothyroxine (Synthroid) is indicated as replacement therapy for which condition?
Correct answer: B.
Levothyroxine is L-thyroxine (T4) and is indicated as replacement therapy for hypothyroidism. Its boxed warning says thyroid hormones must not be used to treat obesity or for weight loss. Knowing the condition a drug treats lets the technician spot a mismatch between a drug and the diagnosis on an order.
A Hyperthyroidism means too much thyroid hormone; adding levothyroxine would not treat it.
B Correct: Synthroid is indicated as replacement therapy in congenital or acquired hypothyroidism.
C Type 2 diabetes is treated with drugs such as metformin, not thyroid hormone.
D The boxed warning says thyroid hormones should not be used for obesity or weight loss.
Full lesson
Each part starts with its main idea. Open a part when you want the details.
The short answer: An indication is the disease or condition a drug is approved to treat, prevent or relieve, stated in the Indications and Usage section of its label. Learn each common drug's condition and its limits: sumatriptan treats a migraine attack but does not prevent one, and albuterol is a rescue inhaler while fluticasone and montelukast are not.
1 What does "indicated for" mean?An indication is the disease or condition that a drug is approved to treat, prevent or relieve. 1 min
An indication is the disease or condition that a drug is approved to treat, prevent or relieve. Under 21 CFR 201.57, every prescription drug label has an "Indications and Usage" section that states these uses and notes major limitations of use. The 2026 PTCE outline lists what medications are indicated for as area 1.6.
Indications appear in the label's first section. The Highlights section often adds a line such as "not indicated for" or "limitations of use." Those limits are part of the indication and are easy to test.
2 Which common drugs should you match to their conditions?Start with the commonly dispensed drugs, because one condition per drug covers most questions. 1 min
Start with the commonly dispensed drugs, because one condition per drug covers most questions.
| Drug | Labeled indication |
|---|---|
| Levothyroxine (Synthroid) | Hypothyroidism (replacement therapy) |
| Sumatriptan (Imitrex) | Acute treatment of migraine with or without aura |
| Albuterol HFA (Ventolin HFA) | Treatment or prevention of bronchospasm |
Levothyroxine also carries a boxed warning that thyroid hormone should not be used to treat obesity or for weight loss.
3 Why do the words "acute" and "prevention" matter?The same symptom can need a drug that treats an attack or one that prevents attacks, and labels keep the two apart. 1 min
The same symptom can need a drug that treats an attack or one that prevents attacks, and labels keep the two apart. Sumatriptan tablets treat a migraine that has started. Their label says they are not indicated for preventing migraine attacks or for cluster headache.
4 How do you tell a rescue inhaler from a maintenance drug?A rescue drug relieves bronchospasm now, while a maintenance drug is taken every day to keep symptoms under control. 1 min
A rescue drug relieves bronchospasm now, while a maintenance drug is taken every day to keep symptoms under control.
| Product | Role | Label limit |
|---|---|---|
| Albuterol HFA (Ventolin HFA) | Rescue | Treats or prevents bronchospasm |
| Fluticasone propionate HFA | Maintenance (asthma) | Not for relief of acute bronchospasm |
| Montelukast (Singulair) | Long-term asthma control | Not for an acute asthma attack |
5 Can one ingredient have different indications?Yes, one active ingredient can be sold under different brands and strengths for different conditions. 1 min
Yes, one active ingredient can be sold under different brands and strengths for different conditions. Finasteride 5 mg (Proscar) is for symptomatic benign prostatic hyperplasia (BPH). Finasteride 1 mg (Propecia) is for male pattern hair loss in men only.
So the brand and strength on the order, not only the generic name, tell you which indication applies.
6 What the technician doesThe technician uses indications to catch mismatches, such as a hair-loss strength on an order for prostate symptoms or a maintenance inhaler where a rescue inhaler was expected. 1 min
The technician uses indications to catch mismatches, such as a hair-loss strength on an order for prostate symptoms or a maintenance inhaler where a rescue inhaler was expected. Any doubt about whether a drug fits the patient's condition goes to the pharmacist. Choosing or changing therapy is never the technician's decision.
Common mistakes
The traps students fall into most. Read these before you practice.
Watch out: Sumatriptan treats a migraine attack, not prevents attacks.
Watch out: Montelukast is for long-term asthma control, not rescue from an acute attack.
Watch out: Proscar 5 mg is for BPH, not hair loss; Propecia 1 mg is for hair loss.
How to remember it
Ask two questions about every drug, in this order.
- What condition? One word or phrase: hypothyroidism, migraine, BPH, hair loss, bronchospasm.
- What limit? Acute or prevention, rescue or maintenance, which brand and strength.
Self-check:
- Can you name the condition levothyroxine replaces hormone for?
- Can you say whether sumatriptan prevents migraines?
- Can you pick the rescue drug from albuterol, fluticasone and montelukast?