Comparisons

Product Comparison

Clomid (Clomifen) vs Tamoxifen (Nolvadex)

Clomid (Clomifene) versus Nolvadex (Tamoxifen) - the two classic PCT SERMs. Both stimulate HPTA, different binding profiles.

Clomid (Clomifen) vial PCT & AI

Clomid (Clomifen)

Form
Tab
Sizes
50mg × 100 Tabs, 25mg × 100 Tabs
Price (per bottle)
50 - 70 EUR
Full detail page
Tamoxifen (Nolvadex) vial PCT & AI

Tamoxifen (Nolvadex)

Form
Tab
Sizes
20mg × 100 Tabs, 10mg × 100 Tabs
Price (per bottle)
45 - 70 EUR
Full detail page

By the numbers

Number of sizes Clomid (Clomifen): 2 Tamoxifen (Nolvadex): 2
Smallest size Clomid (Clomifen): 25 mg Tamoxifen (Nolvadex): 10 mg
Largest size Clomid (Clomifen): 50 mg Tamoxifen (Nolvadex): 20 mg
Price from (per bottle) Clomid (Clomifen): 50 EUR Tamoxifen (Nolvadex): 45 EUR
Price up to (per bottle) Clomid (Clomifen): 70 EUR Tamoxifen (Nolvadex): 70 EUR

Values from the sizes and catalogue prices on this page, without Express and discounts.

Half-life compared

How quickly do they break down?

Share left after one dose, calculated from the half-lives in the lexicon

Clomid (Clomifen)~6 daysTamoxifen (Nolvadex)no exact figure in the lexicon
Half-life ~6 days
After 12 days: 25 %
ProductHalf-lifeDay 7Day 14Day 28
Clomid (Clomifen)~6 days45 %19.8 %3.9 %

Simplified model without an absorption phase, half-lives from the TPD lexicon. Tamoxifen (Nolvadex) is only listed as „long (several days)“ in the lexicon, so it has no curve.

Level

Level with regular doses

Each dose adds to what is left of the last one until a plateau forms. Values relative to the first dose, simplified model, no dosing information.

Clomid (Clomifen): one dose per day, 1 day between dosesLexicon: Oral, 1x per day
Peak 9.17×Trough 8.17×
Day 23 · 24. dose
8.59× of the first dose
Plateau
from Day 25

95 % of the plateau after dose 26

Peak
9.17×

of the first dose

Trough
8.17×

before the next dose

Feature Clomid (Clomifen) Tamoxifen (Nolvadex)
Category PCT & AI PCT & AI
Subcategory Post-Cycle & Aromatase Inhibitors Post-Cycle & Aromatase Inhibitors
Form Tab Tab
Price range 50 - 70 EUR 45 - 70 EUR
GLP-1 No No

Quick reference

What both have in common

  • Same subcategory: Post-Cycle & Aromatase Inhibitors - addressed via overlapping mechanisms.
  • Same main category: PCT & AI / PCT & AI

This page is a high-level comparison for community discussion only. Refer to the linked detail pages for full descriptions, risk profiles and peer-reviewed studies. Not medical advice.

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