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A-Ret 0.1% Gel 1 Aldactone 3 Allegra 2 Allegra M 1 Antiflu 75 2 Assurans 1 Asthalin respiratory solution 1 Augmentin 3 Azicip 250 (Zpac) 1 Azicip 500 (Zpac) 1 Azipro 250 (Zpac) 1 Azipro 500 (Zpac) 1 Bactrim d.s. 1 Balila 1 Belustine 40 1 Betaloc 50 1 Biltee 1 Bimat 0.03% Sterile Drops 1 Budecort 4 Careprost 0.03% Sterile Drops 1 Caverta 3 Cefix 1 Cenforce 6 Cenforce D 1 Cenforce FM 1 Cenforce Professional 1 Cialis 2 Cipmolnu 200 1 Cipmox 2 Claribid 250 1 Claribid 500 1 Climax Spray 1 Covilife 4 Covilife cream 1 Covilife MBD 1 Dabur Shilajit Gold Capsules 1 DOXENORM – LBX 1 DOXT – SL 1 Duprost 1 Duralast 1 Duratia 4 Dutas 1 Efil 3 Eltroxin 6 Emeset 2 Falcigo 2 Famcimac 500 1 Febucip 80 1 Febutec 40 1 Fildena 5 Fildena CT 1 Fildena Professional 1 Fildena Super Active 1 Fildena XXX 1 Floxip 1 Fluka 1 Fluvir (Tamiflu) 1 Fluvoxin 1 Glez 1 HealthVit 1 Imiquad Cream 1 Ipca – Hydroxychloroquine 2 Ivanorm 3 Iverheal 2 Iverheal 3 1 Iverjohn 1 Ivrea 1 Ivrea 1 1 John Lee – Ivermectin 2 Kamagra 2 Kamagra Oral Jelly 1 Laretol 1 Larinate 1 Levoflox 3 Levoquin 2 Low Dose Naltrexone (LDN) 3 LQuin 3 Lumigan 0.1% Sterile Drops 1 Lupimeb 1 Mebex 2 Medrol 3 Megalis 2 Methycobal injection (Vitamin B12) 1 Mirago 1 Modula 1 MONONATE DS 1 MONONATE SP 1 Montair 1 Montair FX 1 Movfor 200 1 Naprosyn 250 1 Naprosyn 500 1 Nervigesic 1 Netazox 500 1 Niclosig 1 Nizonide 500 1 Norsunate 2 Olmecip 1 Olmecip AM (Benicar) 1 Olmecip H (Benicar HCT) 1 Olmecip H 40 (Benicar) 1 Olmecip Trio (Benicar) 1 Omlecip 1 Omnacortil 4 Opsutan 1 Orokinase  Tablet 1 P-Force 1 Panacure 150 Tablet 1 Penegra 2 Pirfenex 200 1 Pirfenex 400 1 Predmet 3 Primovir 1 Radinate 1 Retina Ac Gel 1 Retina-A 0.025% Cream 1 Retina-A 0.04% Gel 1 Retina-A 0.05% Cream 1 Retina-A 0.1% Gel 1 Ridsunate 3 Rupanex 1 Rupanex – M 1 Rybelsus 3 Slim Trim Active 2 Stephonex 500 1 Super Kamagra 1 Symbicort Turbuhaler 3 T bact 1 Tadact 2 Tadaflo 3 Tadora 1 Tamodex 20 1 Tazzle 3 Tentex Royal Capsules 1 UPRISE-D3 1 Valcivir 2 Valif 1 Vidalista 6 Vidalista Black 1 Vidalista CT 1 Vidalista Professional 1 Vilitra 4 Wormentel 4 Zinconia – 50 1 Zocon DT 1
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Free Health Tools & Medicine Calculators

Dose calculators, safety screens, savings tools and treatment timelines – built on official prescribing information to help you understand your medicines and prepare for your doctor or pharmacist.

Explore all tools ↓
7Free interactive tools
0Sign-ups or personal data required
FDA · WHOPlus CDC, NHS and NIH sources on every page
ReviewedChecked by John Creek [M.B.B.S]
Label-based💊

Ivermectin Dosage Calculator

Dose by body weight for strongyloidiasis, river blindness and scabies, with tablet counts, schedules and safety checks.

kg / lbFDA labelCDC schedule
Open calculator →Safety screen🩺

ED Medication Selector

Screen for unsafe combinations, then compare sildenafil, tadalafil and vardenafil by onset, duration and food effects.

SildenafilTadalafilVardenafil
Find my match →Brand names🔄

Drug Interaction Checker

Add generics or brands like Cenforce, Vidalista, Eltroxin or Olmecip and screen for major documented interactions.

100+ namesSeverity levelsLabel sources
Check interactions →Multi-currency💰

Generic Savings Calculator

Compare brand and generic prices per tablet, per month and per year – including shipping – in USD, GBP, AUD, EUR or INR.

Per-tablet costYearly savings5-year view
Calculate savings →Dated plan✨

Tretinoin Purge Timeline

See your adjustment, purge, improvement and maintenance phases by date, plus a ramp-up plan and a purge-vs-breakout check.

Ramp-up schedulePurge checkSkin tips
Build my timeline →Saves progress👁️

Eyelash Growth Tracker

Track bimatoprost 0.03% results week by week to the 16-week full-effect point, with nightly application steps.

Bimatoprost16-week timelineSide-effect watch
Track my lashes →Evidence guide🔬

Fenbendazole Evidence Guide

An interactive look at what lab, animal and human research actually shows, liver safety reports, and questions for your oncologist.

Evidence ladderSafety signalsPrintable checklist
See the evidence →
No tools match your search. Try another word or choose All.

How our health tools work

1Choose a toolPick a calculator, selector, tracker or checker for the medicine or question you have.
2Enter your detailsWeight, dates, prices or medicine names. Nothing is sent to our servers or saved to an account.
3Get a clear resultSee the answer with safety warnings, links to the official source, and next steps to discuss with your doctor or pharmacist.

How the tools are built and reviewed

Every tool is based on official prescribing information – mainly FDA labels published on DailyMed by the US National Library of Medicine – and public guidance from the World Health Organization, the CDC, the NHS and professional medical societies. Each tool page lists its sources and a review date, and is checked by Dr. John Creek before publishing and whenever guidance changes.

The tools only cover approved and guideline-supported uses. Where there is no established human dose – as with fenbendazole – we publish an evidence guide instead of a calculator.

Your privacy

The calculators run entirely in your browser. We do not ask for your name, email or health details. The eyelash tracker can remember your start date on your own device so you can check progress later, and you can clear it at any time.

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Shop by category

Men’s HealthWomen’s HealthSkin CareThyroid CareBlood Pressure CareDiabetes CareAsthmaAnti AllergicAntibioticsAnti ViralAnti WormIvermectinGout TreatmentWeight LossPainkillerVitaminAll products

Health tools FAQs

Are the MyRxBox health tools free?

Yes. Every tool is free to use with no sign-up, account or payment.

Do the tools store my health information?

No. The calculations run in your browser and nothing is sent to our servers. The eyelash tracker can save your start date on your own device only, and you can clear it at any time.

Can these tools replace my doctor or pharmacist?

No. They explain what official labels and guidelines say so you can have a better-informed conversation. Your prescriber decides your treatment and dose.

Where does the information come from?

From FDA prescribing information on DailyMed and guidance from the WHO, CDC, NHS, NIH and professional medical societies. Each tool lists its sources.

How often are the tools updated?

Each tool shows its last review date. We re-check them when labels or guidelines change.

Which tool should I start with?

If you take more than one medicine, start with the drug interaction checker. For cost questions use the generic savings calculator, and for dosing use the calculator for your specific medicine.

Can I share a tool with someone?

Yes. Every result includes share buttons for WhatsApp, X and Facebook, plus a print or save-as-PDF option.

Not sure where to start?

Check your current medicines for interactions in under a minute.

Check interactionsAsk our team

Official sources we use

Medical disclaimer: MyRxBox tools give general information based on public labels and guidelines. They are not medical advice, a diagnosis or a prescription. Always follow your doctor or pharmacist. In an emergency, call your local emergency number.
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