Start with 20-40 mg per day and slowly work your way up increasing the dose every 3 days by 20 mg, to a maximum of 120-160 mg (most find 80 mg to be adequate).
Clenbuterol should be built up and tapered off gradually with dosage increases and decreases every 3-4 days and doses never exceeding 160 mg per day to be perfectly safe.
A typical cycle for clenbuterol might be 3 weeks, with the daily amounts being..........40/40/40/60/60/60/80/80/80/100/100/100/80/80/80/60/60/60/40/40/40 mg/day. Then stopping for three weeks and recommencing.
Usually, one would run Clen with alternating cycles of Cytomel (T3) or a ECA stack for 3 weeks each. If used together, cycles will not completely overlap, but differ slightly so as not to match the low doses with the low and the high doses with the high.
Another good match for clenbuterol in a stack is the plant derivative Yohimbine Hcl. It does concern the standardized product Yohimbine here and not the raw material Yohimbe, which is useless.
In small doses of 20-30 mg per day, it can stop the down-regulation of the nor adrenaline feedback mechanisms, which usually inhibit the actions of nor adrenaline by reducing receptor affinity.
This has two important uses. The first is that the length of action of clenbuterol can be enhanced by a few hours when using it together with Yohimbine HCL (although it already has a considerable half-life time7 of 36 hours and one daily dose should suffice) , and the second is that concomitant use of Yohimbin Hcl may allow clenbuterol to induce its fat burning aspects on a longer term than the normal 2-3 weeks, so it can be used for 5-6 weeks instead. Yohimbin Hcl is, at least for now still, a legal supplement that can be acquired for very little money from legal sources and supplement companies.
One of the primary drawbacks of Clen is that after a couple of weeks, it seems to stop working for most people. This is because it can cause a downregulation of pulmonary, cardiac and central nervous system beta-adrenergic receptors. This is why it seems to stop burning fat for most people at that point. To counteract this, you can take some Ketotifen, Benadryl, or Periactim every 3rd or 4th week that you remain on clen. These are prescription anti-histamines, so they’ll make you drowsy (take before bedtime).
Also, bear in mind that clen isn’t great for your heart, and can cause some issues there (enlargement of ventricles, etc…) but most studies showing Clen to cause heart problems are with animals, and even though the dosing is almost similar to what humans take (in some studies its within range of what would be double of a large human dose...). Again, it’s important to remember that animals have more beta-2 receptors and they cause certain event chains that humans’ beta-2 receptors may not, due to their relatively high concentrations. Clen causes cardiac hypertrophy to some degree, in some cases and even dose-dependent apoptotic and necrotic myocyte death. And since Clen depletes taurine as do most if not all beta-agonists, you may want to supplement your Clen use with some Taurine.
One of the weirdest things about Clenbuterol is that even though it’s an asthma medication, studies have shown reduced exercise (cardiovascular) performance with Clen, but some also show that Clen can alleviate exercise induced asthma!