Testosterone Nasal Gel

Route: Intranasal. A 4.5% gel delivered by a metered applicator into each nostril. Absorbed through the nasal mucosa straight into circulation.

Dosage:

• Natesto: 5.5 mg per nostril, 11 mg per administration, three times daily = 33 mg/day
• Some protocols drop to twice daily on retest, but the label schedule is three times daily
• Doses should be spaced 6-8 hours apart

Application Protocol:

• Blow your nose first, then prime the pump per the device instructions
• Insert the applicator, depress fully, and apply to the inner nostril wall (the septum side)
• Do not sniff or blow your nose for at least an hour afterwards
• Wipe the applicator tip after each use

The Fertility Angle (why this compound exists):

• The short pulsatile profile does not sustain the constant negative feedback that flattens LH and FSH on injectables
• Studies show preserved gonadotropins, preserved intratesticular testosterone, and preserved sperm parameters in most users
• This makes it the one testosterone route that can treat hypogonadal symptoms without the standard fertility trade-off, and the reason it comes up in the TRT-and-trying-to-conceive conversation
• It is not a guarantee. Semen analysis before and during is the only way to know

Bloodwork Timing:

• The curve is spiky, so a single random draw is close to meaningless
• Draw roughly 45-60 minutes after a dose for a peak, and record the interval
• Judge the protocol on symptoms plus LH, FSH, and a semen analysis if fertility is the goal, not on a single total testosterone number

Key Notes:

• Nasal side effects are the limiter: rhinorrhoea, nasal discomfort, epistaxis, and scabbing inside the nostril
• Not for anyone with significant sinus disease, nasal polyps, or a history of nasal or sinus surgery
• Three doses a day is a real adherence burden and the usual reason people stop
• No transfer risk to partners or children
• Minimal haematocrit impact, which makes it another option when erythrocytosis forces a route change