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abaloparatide vs alirocumab

Side-by-side comparison of abaloparatide and alirocumab Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

Drug Class
abaloparatide PTHrP Analog
alirocumab PCSK9 Inhibitor
Type
abaloparatide Prescription
alirocumab Prescription
Summary
abaloparatide

Tymlos is a medicine to treat osteoporosis. It helps make your bones stronger and less likely to break.

alirocumab

Praluent is a medicine that can lower cholesterol. It can also lower the risk of heart problems like heart attack or stroke in some adults.

What It Treats
abaloparatide

Tymlos treats osteoporosis in women after menopause and in men. It is for people who have a high chance of breaking a bone. This includes those who have already had a bone break due to osteoporosis or have other risk factors. It can also be used if other osteoporosis treatments did not work or could not be tolerated.

alirocumab

Praluent is used to lower LDL cholesterol (bad cholesterol). It is used along with diet and exercise in adults with high cholesterol. It is also used in adults and children 8 years and older who have a genetic condition that causes high cholesterol.

How It Works
abaloparatide

Tymlos is similar to a natural hormone in your body. It helps your body build new bone. This makes your bones stronger and less likely to break.

alirocumab

Praluent is a PCSK9 inhibitor. It works by blocking a protein in your body called PCSK9. Blocking this protein helps your body remove LDL cholesterol from your blood.

Common Side Effects
abaloparatide
  • High calcium in your urine
  • Feeling dizzy
  • Feeling sick to your stomach
  • Headache
  • Feeling your heart beat fast or irregularly
alirocumab
  • Injection site reactions (redness, itching, swelling, pain)
  • Flu
  • Muscle pain
  • Diarrhea
FAERS Reports
abaloparatide
  • Headache 4,180
  • Feeling sick to your stomach 3,222
  • Feeling dizzy 3,122
  • Feeling tired 2,742
  • Increased heart rate 2,139
alirocumab
  • Muscle pain 1,655
  • Missed dose 1,364
  • Pain at injection site 1,278
  • Muscle spasms 1,162
  • Joint pain 1,053
Serious Warnings
abaloparatide

Tymlos may increase the risk of bone cancer (osteosarcoma). You should not take this medicine if you have certain conditions that increase this risk. These include Paget's disease, bone cancer, radiation treatment to your bones, or certain hereditary disorders. If you have symptoms of feeling dizzy, palpitations, tachycardia, or nausea, you should sit or lie down.

alirocumab

Serious allergic reactions have happened with Praluent, sometimes requiring hospitalization. If you have signs of a serious allergic reaction, stop using Praluent and get medical help right away.

Pregnancy
abaloparatide

Tymlos is not for women who could get pregnant. It is not known if Tymlos can harm an unborn baby or pass into breast milk.

alirocumab

There is not enough information about Praluent use during pregnancy to know if it is safe. If you are pregnant or plan to become pregnant, talk to your doctor before using Praluent.

Also Compare — Nearby Drugs

Compare alirocumab with

How to Read This abaloparatide vs alirocumab Comparison

abaloparatide is classified in the PTHrP Analog drug class, while alirocumab sits within the PCSK9 Inhibitor class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, abaloparatide has 15,405 submissions while alirocumab has 6,512. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between abaloparatide and alirocumab — always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.