What treats what?

Most people start with one of five drug families, and many end up on two.

Statins are the backbone; newer injections add extra lowering for high-risk patients.

Anticoagulants thin the blood; antiplatelets keep platelets from clumping.

Water pills relieve the swelling; other medicines take strain off the heart.

Metformin first, then a growing menu of pills and once-weekly injections.

The GLP-1 era: the same molecules as the diabetes shots, approved under separate weight-management brands (sometimes at higher doses).

An underactive thyroid gets a daily hormone replacement; an overactive one gets a blocker.

Most medicines slow bone loss; a few actually build new bone.

One set of medicines calms a flare; another lowers uric acid to prevent the next one.

SSRIs are usually first; other families work on different brain chemicals.

Daily antidepressants for the long run; benzodiazepines for short-term relief.

Some sleep medicines are approved for short stretches only; several newer ones are approved for ongoing use and work differently from the “Z-drugs.”

Mood stabilizers and antipsychotics, often in combination.

Many anti-seizure medicines double as treatments for nerve pain or bipolar disorder.

Ordinary painkillers rarely touch nerve pain; these medicines quiet the nerves themselves.

Triptans and gepants stop an attack; other medicines cut how often attacks come.

Stimulants are the most-used family; several non-stimulant options exist.

Older medicines ease symptoms; newer anti-amyloid antibodies — by infusion, or for one of them a weekly at-home shot — target the disease itself.

Medicines replace, mimic or protect dopamine in the brain.

Quick-relief inhalers open airways now; controllers keep them open day to day.

Non-drowsy antihistamines and steroid nasal sprays are the everyday tools.

No medicine cures a cold, but these ease the symptoms. (The FDA has found oral phenylephrine doesn’t work as a decongestant — pseudoephedrine, behind the counter, does.)

Acid reducers come in two strengths of family: H2 blockers and the stronger PPIs.

From motion sickness to chemotherapy, different triggers call for different medicines.

Over-the-counter staples plus prescription options for irritable bowel syndrome.

Antibiotic families are chosen by the germ and the site of infection.

From athlete’s foot to yeast infections to serious systemic infections.

Antivirals work best when started early.

Once-daily combination pills, and now long-acting injections given every one to six months.

Eight to twelve weeks of pills cure more than 95% of people.

Over-the-counter relievers cover most needs; opioids are for pain they can’t manage.

Anti-inflammatories for the pain; disease-modifying drugs when the immune system is the cause.

Biologics and targeted pills that turn down an overactive immune system.

Creams first, then pills or injections for stubborn or widespread disease.

Targeted therapies and immunotherapies now sit alongside classic chemotherapy.

Medicines that relax or shrink the prostate, and others that calm an overactive bladder.

One family dominates: the PDE5 inhibitors.

Hormonal contraception in many forms, plus hormone therapy for menopause symptoms.

Naloxone reverses an overdose; other medicines support recovery from opioid use disorder.

Medicines make quitting for good about one-and-a-half to two times more likely; varenicline is the strongest single option.

Daily eye drops that lower the pressure inside the eye.